In this Vehicle Platform Guide, you will find the top common issues of Mercedes-Benz GLS450 (X167; 2020-2022) 3.0L Inline-6 Turbocharged Mild-Hybrid (MHEV), along with their fault codes, and the solutions from eEuroparts.com.
The 2020-2022 Mercedes-Benz GLS450 (X167) 3.0L Turbocharged Inline-6 Mild-Hybrid is a full-size luxury SUV that fuses modern electrified performance with refined 7-passenger comfort and advanced all-terrain capability. Powered by a 3.0L turbocharged inline-6 gasoline engine (M256) paired with a 48V EQ Boost mild-hybrid system, it delivers 362 horsepower and 369 lb-ft (500 Nm) of torque, with an additional 21 hp and 184 lb-ft (250 Nm) of electric boost. Mated to a 9-speed 9G-TRONIC automatic transmission and Mercedes’ 4MATIC all-wheel drive system.
Specifications
Engine and Powertrain
Engine:
3.0L Turbocharged Inline-Six with Integrated Starter Generator (ISG)
Engine Code:
M256
Horsepower:
362 hp @ 5,500-6,100 rpm (with EQ Boost delivering up to +21 hp)
Torque:
369 lb-ft @ 1,600-4,500 rpm
Fuel Type:
Gasoline (Premium)
Transmission:
9-Speed Automatic (9G-TRONIC)
Fuel Economy (EPA Estimates)
City/Highway Combined:
~20-24 MPG
Vehicle Weight
Curb weight:
~ 5,258 lbs
Gross Weight:
~ 7,121 lbs
Configurations and Submodels
Body Styles:
SUV
Seating Capacity:
7 passengers
Drivetrain Options:
4MATIC All-Wheel Drive (Standard)
Top Common Issues with Mercedes-Benz GLS450 (X167; 2020-2022) 3.0L Inline-6 Turbocharged Mild-Hybrid (MHEV)
Brake Master Cylinder
1. Brake Master Cylinder Failure
Fault Codes:
C0040 indicates a malfunction in the right front wheel speed sensor circuit, while C0041 refers to a fault in the brake pedal switch 'B.'
Why it happens:
Brake master cylinder failure typically occurs due to internal seal wear, fluid contamination, or corrosion, which compromise hydraulic pressure and lead to reduced braking performance.
Symptoms:
Soft or spongy brake pedal: The brake pedal feels unusually soft or mushy, indicating potential internal seal failure or air in the system.
Pedal sinks to the floor: When steady pressure is applied, the pedal slowly sinks, suggesting internal fluid bypass within the master cylinder.
Inconsistent braking response: The brake feel changes unpredictably, often due to unstable hydraulic pressure from a failing master cylinder.
Brake warning light on: A drop in brake pressure or fluid level may trigger the brake warning light on the dashboard.
Visible brake fluid leak: Leakage around the master cylinder or firewall area points to worn seals or a damaged reservoir.
Contaminated brake fluid: Brake fluid appears dark or dirty, often caused by internal wear or corrosion inside the master cylinder.
Reduced braking power: The vehicle requires more distance or effort to stop, reflecting insufficient hydraulic pressure.
Parts to Replace
OEM Mercedes Brake Master Cylinder 1674301100 This Genuine Mercedes-Benz Brake Master Cylinder part number 1674301100 is designed to provide exceptional braking performance for your Mercedes-Benz vehicle.
C13A5 and C13A6 signal electric faults in the parking brake motor, often due to wiring, actuator, or module failure.
Why it happens:
An electronic parking brake actuator fault typically occurs due to electrical issues like low voltage, corroded connectors, or a malfunctioning motor that prevents the actuator from engaging or releasing the brake properly.
Symptoms:
The dashboard displays a “Parking Brake Fault” or “Service Parking Brake” warning message.
The brake warning light stays on or flashes continuously.
ABS or traction control warning lights may illuminate due to system interconnection.
Pressing the EPB switch fails to engage or release the parking brake.
You may hear no sound or repeated clicking from the actuator when trying to operate the brake.
The vehicle may roll when parked on an incline, indicating the brake didn’t hold.
The brake may remain stuck, preventing the car from moving even when in gear.
Unusual noises like grinding, buzzing, or whirring may come from the rear wheels during brake operation.
Low battery voltage can cause the EPB to behave erratically or fail intermittently.
The EPB may work inconsistently-sometimes functioning normally, other times not responding at all.
Parts to Replace
OEM Parking Brake Actuator - Rear Part # 1679062004 The Genuine Mercedes-Benz Parking Brake Actuator is a top-quality component designed to ensure the efficient functioning of the parking brake system in your Mercedes-Benz.
Fault codes C156E and C1526 relate to suspension systems - C156E flags ride height calibration failure, while C1526 indicates a left rear ride height sensor fault.
Why it happens:
Air suspension compressor failure typically occurs due to overheating, moisture contamination, air leaks, electrical faults, or worn components, which impair pressure buildup and system performance.
Symptoms:
Vehicle sits noticeably lower: Especially after being parked overnight, due to insufficient air pressure in the suspension system.
Uneven ride height: One side or corner may sag if the compressor can’t inflate all air springs equally.
Compressor runs excessively or continuously: Often caused by internal wear or system leaks, leading to overheating or battery drain.
Slow or no lift: The vehicle may take longer to rise or fail to reach normal ride height after startup.
Unusual noises: Grinding, whining, or clicking sounds from the compressor suggest mechanical failure.
Warning lights or error codes: Suspension or ride height alerts may appear on the dashboard.
Rough ride or poor handling: Loss of air pressure reduces damping, making the ride harsh or unstable.
Rear lateral arm failure typically occurs due to bushing wear, corrosion, impact damage, or excessive suspension stress, leading to instability and alignment issues.
Symptoms:
Loose or unstable handling: The vehicle may feel unsettled or vague during cornering or lane changes due to compromised rear axle stability.
Clunking or knocking noises: Especially from the rear suspension when driving over bumps or during acceleration and braking-often caused by worn bushings or loose joints.
Uneven rear tire wear: Misalignment from a failing lateral arm can cause excessive wear on the inner or outer edges of the rear tires.
Rear-end sway or drift: The car may feel like it’s fishtailing or not tracking straight, particularly at higher speeds.
Steering feels disconnected: A degraded lateral arm can reduce rear-end support, making the steering feel imprecise or delayed.
Visible damage or corrosion: Cracks, rust, or excessive play in the lateral arm or its bushings during a visual inspection.
Rear Driver Side (Rearward) Part # 1673503700 The Genuine Mercedes-Benz Lateral Arm part number 1673503700 is an exceptional product that perfectly suits your Mercedes-Benz vehicle.
Rear Passenger Side (Rearward) Part # 1673503800 The Genuine Mercedes-Benz Lateral Arm part number 1673503800 is a high-quality component that is designed to meet the highest standards of performance and durability.
Fault codes P0300 through P0306 indicate engine misfires - P0300 signals random or multiple misfires, while P0301 to P0306 specify misfires in cylinders 1 through 6.
Why it happens:
Ignition coil failure typically results from heat stress, internal short circuits, oil contamination, or voltage spikes that degrade insulation or disrupt spark generation.
Symptoms:
Check Engine Light (CEL): Often the first sign, triggered by misfire-related codes like P0300-P0306.
Engine misfires: Caused by weak or absent spark, leading to jerking, hesitation, or rough running-especially under load.
Hard starting or no start: A failed coil may prevent the engine from firing, especially in cold or damp conditions.
Rough idle: The engine may shake or vibrate noticeably at idle due to incomplete combustion.
Loss of power: Acceleration feels sluggish or unresponsive, particularly during uphill driving or overtaking.
Poor fuel economy: Incomplete combustion forces the ECU to compensate, increasing fuel consumption.
Backfiring or fuel smell: Unburned fuel may ignite in the exhaust, producing popping sounds or a strong fuel odor.
Parts to Replace
NGK Mercedes-Benz Ignition Coil 49107 manufactured by NGK or supplied as a Genuine OEM component, is a high-performance coil designed for various 3.0L V6 twin-turbocharged engines (M276) used across multiple Mercedes-Benz models.
Direct Ignition Coil (Cylinder 1,2,6) 256906050005 is an OEM coil-on-plug unit specifically designed for cylinders 1, 2, and 6 in select models equipped with the 3.0L inline-6 mild-hybrid (M256) engine.
Mercedes Direct Ignition Coil 256906060028 The Genuine Mercedes-Benz direct ignition coil is a high-quality, reliable and durable replacement part for your Mercedes-Benz.
OEM Mercedes Spark Plug 2541590000 The Genuine Mercedes-Benz Spark Plug is the perfect solution for anyone in need of a reliable spark plug replacement for their Mercedes-Benz vehicle.
C1022 indicates a fault in the right front wheel speed sensor circuit, while C1023 signals a suspension or steering angle sensor issue causing drift compensation failure.
Why it happens:
Steering knuckle failure typically occurs due to impact damage from potholes or curbs, corrosion, or wear at mounting points causing misalignment.
Symptoms:
The vehicle pulls to one side, even when the steering wheel is centered.
You hear clunking, popping, or grinding noises when turning or driving over bumps.
The steering wheel vibrates, especially at higher speeds or during braking.
Steering feels loose, heavy, or unresponsive, making it harder to maintain control.
Uneven tire wear appears, often on the inner or outer edges, despite regular alignment.
The steering wheel doesn’t return to center after completing a turn.
Brake performance becomes inconsistent, with pulsation or uneven braking force.
Visible damage like cracks, rust, or deformation may be seen on the knuckle during inspection.
Suspension components feel loose, or bolts frequently come undone due to mounting distortion.
Grease or oil leaks may appear near the knuckle if bearing seals are compromised.
Parts to Replace
Right 1673322600 The Genuine Mercedes-Benz Steering Knuckle is a top-of-the-line steering component designed specifically for Mercedes-Benz vehicles.
Left 1673322500 The Genuine Mercedes-Benz Steering Knuckle is a reliable replacement part designed specifically for your Mercedes-Benz vehicle.
B1640, B1D55, U0131, and U0428 indicate faults in mirror, antenna, power steering, and steering angle sensor circuits respectively.
Why it happens:
Steering column failure typically results from wear and tear, impact damage, poor lubrication, or internal component fatigue like worn bearings or joints.
Symptoms:
The steering wheel feels loose or wobbly, indicating worn internal joints or bushings.
You hear clicking, grinding, or squeaking noises when turning the wheel, often from damaged bearings or gears.
The steering wheel doesn’t return to center after a turn, suggesting internal binding or misalignment.
Steering becomes stiff or hard to turn, especially at low speeds, due to increased friction or joint failure.
The tilt or telescopic adjustment fails to lock, making the wheel unstable while driving.
You feel vibrations or shaking through the steering wheel, especially at certain speeds or during turns.
Warning lights like EPS or stability control illuminate, triggered by sensor faults within the column.
The steering wheel is off-center even when driving straight, possibly from column misalignment or internal damage.
There’s excessive play or delay in steering response, often caused by worn universal joints or couplings.
You notice contamination or debris near the column, which can interfere with smooth operation.
Parts to Replace
OEM Mercedes Steering Column 1674609100 Crafted with precision and impeccable standards, the Genuine Mercedes-Benz Steering Column is the perfect fit for your Mercedes-Benz.
B1640, B1644, and U0131 indicate faults in mirror, turn signal, and power steering circuits due to wiring, module, or communication issues.
Why it happens:
Steering column tilt motor failure typically occurs due to worn gears, electrical faults, or binding from debris or misaligned components in the tilt mechanism.
Symptoms:
The steering wheel won’t move up or down when using the tilt adjustment switch.
You hear clicking or buzzing sounds from the column area, but no movement occurs.
The tilt function works intermittently, sometimes responding and sometimes not.
The steering wheel gets stuck in one position, making it difficult to find a comfortable driving posture.
The tilt motor runs but the wheel doesn’t move, indicating a broken gear or linkage.
You notice increased resistance or binding when trying to adjust the tilt manually (if applicable).
The tilt memory function fails to recall preset positions, especially in vehicles with memory seats and steering.
A tilt motor-related fault code appears during diagnostic scans, often stored in the body or steering control module.
Parts to Replace
Mercedes Steering Column Control Switch 1674602401 The Genuine Mercedes-Benz Steering Column Control Switch part number 1674602401 is a high-quality replacement part designed for Mercedes-Benz models.
Steering Column Tilt Motor 2054603803 is an OEM electric motor designed to control the vertical adjustment of the steering wheel in various Mercedes-Benz models.
Steering wheel failure typically occurs due to worn internal components, electrical faults, or mechanical damage within the steering column or linkage system.
Symptoms:
The steering wheel feels unusually stiff or hard to turn, often due to power steering issues or internal binding. You notice excessive play or looseness, where the wheel moves without affecting the vehicle’s direction.
The steering wheel vibrates or shakes, especially while cornering or at high speeds, indicating imbalance or worn components.
You hear whining, clunking, or grinding noises when turning, often from worn bearings or a failing steering rack.
The wheel doesn’t return to center after a turn, suggesting internal misalignment or mechanical resistance.
The vehicle pulls to one side even when the wheel is straight, possibly due to steering miscommunication or component failure.
Fluid leaks or a burning smell may appear, pointing to power steering fluid loss or overheating.
The steering wheel slips or feels disconnected, indicating a serious fault in the column or linkage.
Warning lights like EPS or steering assist appear, triggered by sensor or module faults.
You feel delayed or inconsistent steering response, making it harder to control the vehicle precisely.
Parts to Replace
Standard 00046059029E38 Crafted specifically for Mercedes-Benz vehicles, the Genuine Mercedes-Benz Steering Wheel is the epitome of luxury and quality.
Sport 00046091029E38 The Genuine Mercedes-Benz Steering Wheel part number 00046091029E38 is a premium quality replacement part designed specifically for Mercedes-Benz vehicles.
OEM Freeze Plug Part # 000000006531 The Genuine Mercedes-Benz Engine Expansion Plug part number 000000006531 is an essential component for maintaining the optimal performance of your Mercedes-Benz vehicle.
P0243 indicates a faulty turbo wastegate solenoid; P0299 and P2263 point to low boost pressure or turbo performance issues.
Why it happens:
Turbocharger wastegate failure typically occurs due to carbon buildup, corrosion, or actuator wear - preventing proper boost regulation and leading to performance loss.
Symptoms:
Loss of boost pressure: The engine may feel sluggish or underpowered, especially during acceleration, due to improper boost regulation.
Check engine light (CEL): Fault codes like P0243, P0299, or P2263 often appear when the wastegate or its control system malfunctions.
Poor fuel economy: A stuck wastegate can cause inefficient combustion, leading to increased fuel consumption.
Overboost or underboost conditions: Depending on whether the wastegate is stuck closed or open, you may experience excessive or insufficient boost.
Unusual turbo noises: Whistling, fluttering, or hissing sounds may indicate a malfunctioning actuator or leaking diaphragm.
Engine hesitation or surging: Inconsistent boost delivery can cause erratic throttle response or surging under load.
P0480 indicates a cooling fan relay fault; P26FA and P26CB involve active grille shutter malfunctions affecting airflow and engine cooling.
Why it happens:
Exhaust control valve actuator failure typically occurs due to carbon buildup, moisture intrusion, electrical faults, or mechanical wear that impair valve movement or sensor feedback.
Symptoms:
Check Engine Light (CEL): Often triggered by codes like P121B, P1217, or P31DB due to actuator or position sensor faults.
Rattling or buzzing noises: Especially noticeable at idle or during cold starts, caused by loose or stuck valve flaps.
Loss of exhaust tone control: In vehicles with active exhaust systems, the sound may remain muted or overly loud regardless of drive mode.
Reduced engine performance: A stuck valve can disrupt backpressure, affecting turbo spool or low-end torque.
Inconsistent throttle response: Hesitation or surging may occur due to fluctuating exhaust flow dynamics.
Increased emissions or failed inspection: A malfunctioning valve can alter combustion efficiency, raising NOx or CO levels.
Genuine Mercedes-Benz Exhaust Control Valve Actuator
P0106, P0107, and P0108 relate to the MAP sensor-indicating performance issues, low voltage, or high voltage readings respectively.
Why it happens:
Manifold Absolute Pressure (MAP) sensor failure typically occurs due to internal contamination, heat damage, or electrical faults that disrupt accurate pressure readings.
Symptoms:
Check Engine Light (CEL): Often the first sign, triggered by codes like P0106, P0107, or P0108.
Poor fuel economy: Incorrect pressure readings can cause the ECU to inject too much or too little fuel.
Engine misfires or hesitation: An imbalanced air-fuel mixture disrupts combustion, especially under load or acceleration.
Rough idle or stalling: The engine may idle erratically or stall due to unstable fuel delivery.
Lack of power: The vehicle may feel sluggish or unresponsive, particularly during throttle input.
Black smoke from exhaust: A rich mixture caused by faulty readings can lead to incomplete combustion.
Hard starting or no start: Severe sensor failure may prevent the engine from starting altogether.
P0087, P0230, and P0627 indicate fuel system issues-low rail pressure, fuel pump relay failure, or control circuit malfunction.
Why it happens:
Electric fuel pump failure typically occurs due to overheating from low fuel levels, contaminated fuel, electrical faults, or internal wear that impairs pressure delivery.
Symptoms:
Engine sputtering or stalling: Especially at high speeds or under load, due to inconsistent fuel delivery.
Hard starting or no start: The engine may crank but fail to start if the pump can't supply adequate pressure.
Loss of power under acceleration: Hesitation or sluggish response when demanding more fuel, such as during overtaking or climbing hills.
Whining noise from the fuel tank: A high-pitched whine may indicate the pump is straining or running dry.
Surging or jerking: The vehicle may lurch unexpectedly as fuel pressure fluctuates.
Poor fuel economy: Inconsistent fuel delivery can cause the ECU to overcompensate, increasing consumption.
Check Engine Light (CEL): Often triggered by codes like P0087, P0230, or P0627, pointing to pressure or relay issues.
Parts to Replace
OEM Electric Fuel Pump Part # 1674704500 The Genuine Mercedes-Benz Fuel Pump and Strainer Set is a top-quality replacement part that is designed to provide excellent performance and reliability for your Mercedes-Benz vehicle.
U0155 indicates lost communication with the instrument cluster; B1676 flags abnormal battery voltage; U0001 denotes high-speed CAN bus fault.
Why it happens:
Instrument cluster voltage regulator failure typically occurs due to electrical overload, aging components, or poor grounding, leading to unstable or lost gauge readings.
Symptoms:
Dim or flickering gauges: Backlighting or needle illumination may pulse or fade, especially noticeable at night or during startup.
Inaccurate or erratic readings: Speedometer, fuel, or temperature gauges may jump, freeze, or display incorrect values intermittently.
Complete cluster blackout: The entire instrument panel may go dark or become unresponsive, even though the vehicle still runs.
Warning lights behaving abnormally: Lights may stay on, flash randomly, or fail to illuminate during startup checks.
Battery or charging system warnings: A failing regulator can mimic alternator or battery issues, triggering related dashboard alerts.
Intermittent power loss to cluster: The display may cut out and return unpredictably, often tied to voltage fluctuations or grounding faults.
Fault codes P0130 and P0136 indicate oxygen sensor circuit issues-P0130 refers to Bank 1 Sensor 1 (upstream), while P0136 flags Bank 1 Sensor 2 (downstream) malfunction.
Why it happens:
Oxygen sensor malfunction typically occurs due to contamination from fuel additives, carbon buildup, aging, or prolonged exposure to high exhaust temperatures, which degrade sensor accuracy and response.
Symptoms:
Check Engine Light (CEL): Often the first sign, triggered by codes like P0130 or P0136 due to sensor circuit faults.
Poor fuel economy: A faulty sensor can cause the ECU to enrich or lean out the fuel mixture unnecessarily.
Rough idle or engine misfires: Incorrect air-fuel ratios disrupt combustion, leading to unstable idle or hesitation.
Failed emissions test: A malfunctioning sensor can increase NOx, CO, or HC emissions beyond legal limits.
Black smoke or sulfur smell: Excess fuel may burn incompletely, producing visible exhaust or a rotten egg odor.
Loss of power or sluggish acceleration: The engine may feel unresponsive due to improper fuel delivery.
Stalling or hard starting: Severe sensor failure can prevent the engine from maintaining idle or starting reliably.
Parts to Replace
OEM Oxygen Sensor - Rear Part # 0005427611 The Genuine Mercedes-Benz Oxygen Sensor is the perfect fit for your Mercedes-Benz. It is a durable and reliable sensor that is designed to measure the amount of oxygen in the exhaust gases of your car.
Fault codes B10A6 and B10A7 relate to HVAC blend door issues-B10A6 signals restricted travel (too small), while B10A7 indicates overshoot beyond expected range.
Why it happens:
HVAC blower motor failure typically occurs due to electrical faults, overheating from clogged filters, worn bearings, or lack of regular maintenance.
Symptoms:
Weak or no airflow from vents: The most obvious sign-air barely moves or stops altogether, even when the system is on.
Unusual noises: Grinding, squealing, or rattling sounds often point to worn bearings or internal motor damage.
Burning smell or overheating: A failing motor may overheat, producing a hot or electrical odor from the vents.
Blower runs continuously or not at all: Faulty relays or motor windings can cause the blower to stay on or fail to start.
Frequent circuit breaker trips: Electrical overloads from a seized or shorted motor can trip breakers repeatedly.
Higher energy bills: A struggling motor draws more power, reducing system efficiency and increasing costs.
Parts to Replace
OEM HVAC Blower Motor Part # 0999062502 The Genuine Mercedes-Benz HVAC Blower Motor Assembly is an essential component of the air conditioning unit of your Mercedes-Benz.
P0700 and P0701 indicate transmission control issues - P0700 flags a general fault, P0701 highlights control module performance or range problems.
Why it happens:
Transmission oil degradation failure typically occurs due to oxidation, thermal breakdown, additive depletion, or contamination, which compromise lubrication, increase friction, and accelerate wear.
Symptoms:
Delayed or harsh shifting: Gear changes may feel sluggish, jerky, or occur at incorrect RPMs due to reduced hydraulic efficiency.
Overheating transmission: Degraded fluid loses its cooling properties, leading to elevated transmission temperatures and potential damage.
Slipping gears: The transmission may momentarily lose drive or fail to stay in gear under load.
Burnt smell or dark fluid: Old or oxidized fluid often smells burnt and appears brown or black instead of translucent red.
Unusual noises: Whining, grinding, or clunking sounds during shifts can indicate poor lubrication and increased internal friction.
Poor fuel economy: Inefficient gear engagement and increased drag can reduce overall drivetrain efficiency.
Check Engine Light (CEL): Often triggered by transmission-related codes like P0700 or P0701 when fluid degradation affects performance.
Parts to Replace
Auto Trans Fluid (MULTI ATF) (1 Liter) - 105784 The Motul Automatic Transmission Fluid part number 105784 is the perfect solution for Audi, BMW, Fiat, and Jaguar owners who want to improve the performance of their vehicles.
Auto Trans Fluid (ATF VI) (1 Liter) -105774 The Motul Automatic Transmission Fluid Part Number 105774 is engineered to deliver exceptional performance for Audi, BMW, Jaguar, and Land Rover vehicles.
Fault codes P0722 and P0730 indicate transmission issues - P0722 flags no signal from the output speed sensor, while P0730 points to incorrect gear ratio detection.
Why it happens:
Transmission mount faults typically occur due to rubber deterioration, fluid contamination, excessive drivetrain movement, or age-related fatigue, leading to misalignment and vibration.
Symptoms:
Clunking or banging noises: Especially during acceleration, deceleration, or gear changes, as the transmission shifts position.
Excessive vibration: Felt through the cabin, steering wheel, or floor-caused by poor isolation of drivetrain movement.
Misaligned drivetrain: May lead to harsh shifting, driveshaft issues, or premature wear on other mounts.
Engine or transmission movement: Visible rocking or shifting when revving the engine in park or shifting into gear.
Unusual shifting behavior: Delayed engagement or rough gear changes due to misalignment or stress on transmission components.
Chassis flex or damage: In severe cases, repeated impact from a loose transmission can stress the vehicle frame.
Park assist camera failure typically occurs due to lens obstruction from dirt or moisture, faulty wiring, software glitches, or internal camera damage.
Symptoms:
The rearview or surround camera image is blank, distorted, or flickering when shifting into reverse.
You see a “Park Assist Camera Unavailable” or similar warning on the dashboard or infotainment screen.
The image appears cloudy or blurry, often due to a dirty, fogged, or moisture-intruded lens.
Colored lines or static interference show up on the display, indicating signal or wiring issues.
The camera intermittently works, suggesting a loose connection or failing internal component.
The system fails to detect nearby objects, even though the camera appears to be functioning.
You hear false proximity alerts or none at all, especially when paired with sensor faults.
The camera view lags or freezes, making it unreliable for real-time parking assistance.
Parts to Replace
Front 0009055505 The Genuine Mercedes-Benz Park Assist Camera is the perfect solution for Mercedes-Benz owners who value safety and convenience while parking.
Rear 0009056206 The Genuine Mercedes-Benz Park Assist Camera is a top-quality car part that is designed to enhance your driving experience.
Front Outer 00090556049999 The Genuine Mercedes-Benz Parking Aid Sensor is a highly reliable and durable replacement part designed for Mercedes-Benz vehicles.
Front Outer Rear 00090555049999 The Genuine Mercedes-Benz Parking Aid Sensor is a high-quality replacement part that’s compatible with part number 0009055504.
P0115-P0118 indicate ECT sensor circuit faults: general malfunction, range issue, low voltage (short), or high voltage (open).
Why it happens:
Engine coolant temperature sensor failure typically occurs due to prolonged heat exposure, electrical issues, corrosion, or contamination affecting signal accuracy.
Symptoms:
Check engine light illuminates, often triggered by erratic or implausible temperature readings.
Poor fuel economy develops, as the ECU may enrich the mixture unnecessarily, thinking the engine is cold.
Cooling fans fail to activate, leading to overheating if the sensor doesn’t signal high temperature.
Black smoke from the exhaust may appear due to an overly rich air-fuel mixture.
Hard starting or extended cranking occurs, especially in cold conditions, from incorrect fuel delivery.
Rough idle or engine stalling happens due to unstable mixture control at low speeds.
Temperature gauge fluctuates or reads inaccurately, reflecting inconsistent sensor output.
Engine overheats, particularly if the fan control relies on the faulty sensor.
Poor engine performance, including hesitation or sluggish acceleration, results from incorrect timing and fueling.
Radiator fan runs constantly or not at all, depending on how the ECU interprets the faulty signal.
eEuroparts offers a wide selection of OEM and well-reviewed aftermarket parts chosen for compatibility with Mercedes-Benz vehicles. Parts are listed with fitment details and trusted brand options to help you find components that are appropriate for routine maintenance and common repairs.
Exceptional Delivery, Unmatched Logistics
We know that every moment counts when your car is out of commission. That’s why we focus on getting your parts to you as quickly as possible. Our efficient logistics network and fast shipping mean minimal downtime for your vehicle.
Competitive Prices, Superior Value
Our catalog includes everything from timing chains, camshaft adjusters, and PCV valves to wheel bearings, control arms, and fuel pumps, sourced to meet or exceed OE standards. Whether you prefer genuine Mercedes-Benz parts or trusted aftermarket brands, we offer top-tier quality at better-than-dealer pricing.
Trusted Excellence
Our catalog includes parts from top-tier brands like Bosch, INA, ZF, Pierburg, Elring, Lemforder, and Rein. Whether you're resolving transmission issues, electrical faults, or suspension wear, our parts meet or exceed OEM standards for fit, durability, and performance.
Conclusion
Whether you’re replacing worn items or addressing a specific fault, use these listings to identify likely parts and plan repairs. For vehicle-specific advice, consult a trusted technician to confirm fitment and service steps before installation.
The GLS450 is generally seen as reliable, especially with regular maintenance, timely oil changes, and software updates. Owners often report smooth performance, but staying ahead of routine service is key to keeping repair costs down.
What common problems do GLS450 owners usually experience?⌄
US owners most often mention mild-hybrid system alerts, occasional suspension squeaks, MBUX glitches, and premature battery drain. These aren’t guaranteed issues, but they are the most commonly searched concerns.
How expensive is maintenance for a GLS450? ⌄
Maintenance is on the higher side compared to non-luxury SUVs. Services like brakes, oil changes, and air suspension checks can add up, but using quality OEM parts can reduce long-term repair costs.
Is the GLS450 good for towing and family road trips?⌄
Yes, it’s popular among families for its comfort, quiet cabin, and strong towing capability when properly equipped. Many US owners mention its smooth ride and space as major reasons for buying it.
How long does the GLS450 mild-hybrid battery last? ⌄
The mild-hybrid system battery usually lasts several years with normal driving. Most owners don’t face issues early on, but regular diagnostics during service visits help catch any early battery-related warnings.
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