In this Vehicle Platform Guide, you’ll find the most common issues of the Mercedes-Benz GLC 300 4MATIC (2.0L Inline-4 Turbocharged Gasoline, 2018–2024), along with related fault codes and recommended solutions from eEuroparts.com.
The Mercedes-Benz GLC 300 4MATIC is a luxury compact SUV that blends performance, comfort, and technology. Its 2.0L turbocharged gasoline engine delivers smooth and responsive power with confident all-wheel-drive capability. With its refined design, premium interior, and everyday practicality, the GLC 300 4MATIC remains a standout choice for drivers seeking both style and reliability.
Specifications
Engine and Powertrain
Engine:
2.0L Inline-4 Turbocharged
Engine Code:
M274
Transmission:
9-speed 9G-TRONIC Automatic
Fuel Type:
Gasoline
Horsepower:
255 hp
Torque:
273 lb-ft
Fuel Economy (EPA Estimates)
City/Highway Combined:
~ 22-27 MPG
Vehicle Weight
Curb Weight:
~ 4,001 lbs
Gross Weight:
~ 5,467 lbs
Configurations and Submodels
Body Styles:
5-door SUV
Seating Capacity:
5 passengers
Drivetrain Options:
4MATIC All-Wheel Drive (AWD)
Top Common Issues with the Mercedes-Benz GLC 300 4MATIC (2.0L Inline-4, 2018-2024)
ABS Wheel Speed Sensor
1. ABS Wheel Speed Sensor Fault
Fault code:
A common fault code for ABS wheel speed sensor issues in the Mercedes-Benz GLC 300 are C0034, C0035, C0036, and C0037, which indicate a problem with the speed sensor.
Why it happens:
ABS wheel speed sensor faults in the Mercedes-Benz GLC 300 4MATIC can occur due to wear and tear, electrical issues, or damage from road debris.
Symptoms:
ABS Warning Light: The dashboard may display the ABS warning light, indicating a problem with the ABS system.
Reduced Braking Performance: The vehicle may have reduced braking performance, especially in slippery conditions.
Unresponsive ABS: The ABS system may not engage during hard braking, leading to potential wheel lock-up.
Inconsistent Speedometer Readings: The speedometer may show incorrect or fluctuating readings.
Traction Control Issues: The traction control system may not function properly, affecting vehicle stability.
Parts to Replace
Mercedes ABS Wheel Speed Sensor – Rear Driver Left 2539052500 is a genuine OEM part designed to monitor the rotational speed of the front wheels. This sensor plays a crucial role in the anti-lock braking system (ABS) by providing real-time data to the vehicle's electronic control unit (ECU).
Some common causes of warped brake rotors are excessive heat, improper bedding, harsh driving habits, poor quality rotors, improper installation, or environmental damage.
Symptoms:
Vibrations: You may feel vibrations in the brake pedal or steering wheel when applying the brakes.
Pulsating Brake Pedal: The brake pedal may pulsate or feel uneven when pressed.
Squeaking or Grinding Noises: Unusual noises such as squeaking or grinding when braking.
Reduced Braking Performance: Noticeable decrease in braking efficiency and stopping power.
Uneven Brake Pad Wear: Uneven wear on the brake pads due to the warped rotors.
Mercedes Disc Brake Rotor – Rear 0004230712 It is engineered to meet the highest level of safety and reliability standards, ensuring optimal performance and long-lasting durability.
Some common causes of brake master cylinder fault are excessive heat, harsh driving habits, manufacturing defects, improper installation, or impact damage.
Symptoms:
Spongy Brake Pedal: The brake pedal may feel soft or spongy when pressed.
Brake Fluid Leaks: Visible brake fluid leaks around the master cylinder area.
Reduced Braking Performance: Noticeable decrease in braking efficiency and stopping power.
Brake Warning Light: The brake warning light may illuminate on the dashboard.
Brake Pedal Sinks: The brake pedal may sink to the floor when pressed and held.
Parts to Replace
Mercedes Brake Master Cylinder 2054300001 The master cylinder is responsible for converting the force applied to the brake pedal into hydraulic pressure, which is then used to operate the brake calipers and bring the vehicle to a stop.
Genuine Mercedes-Benz Brake Master Cylinder Reservoir Cap 202430001464 is a critical component for maintaining the integrity of your braking system. It seals the brake fluid reservoir, preventing contaminants and moisture from entering, which could compromise braking performance.
The faulty parking brake actuator in the Mercedes-Benz typically occurs due to a malfunctioning electronic parking brake module or actuator motor.
Symptoms:
Warning Messages: "Parking Brake Inoperative" or "See Operator’s Manual" messages on the dashboard.
Warning Lights: Red and yellow parking brake warning lights illuminated on the dashboard.
Noise: Unusual noises, such as screeching or grinding, when applying or releasing the parking brake.
Failure to Engage/Release: The parking brake may not engage or release properly, causing the vehicle to remain stationary or move unexpectedly.
Manual Override Required: Needing to manually override the parking brake to release it.
Parts to Replace
Mercedes Parking Brake Actuator – Rear Passenger Right 0009061303 The Genuine Mercedes-Benz Parking Brake Actuator part number 0009061303 / 000 906 13 03 is an essential component designed for Mercedes-Benz vehicles to provide reliable parking brake functionality.
Suspension knuckle issues in the Mercedes-Benz GLC 300 4MATIC can occur due to compromised steering geometry, poor road conditions, or physical damage to the knuckle or its components.
Symptoms:
Uneven Tire Wear: The tires may wear unevenly, indicating alignment issues caused by a faulty suspension knuckle.
Poor Handling: The vehicle may feel less stable and harder to control, especially when cornering or driving on uneven surfaces.
Clunking Noises: You might hear clunking or knocking noises from the suspension, particularly when driving over bumps or rough roads.
Steering Problems: The steering may feel loose or unresponsive, making it difficult to maintain control of the vehicle.
Vehicle Leaning: The vehicle may lean to one side, indicating that the suspension knuckle is not maintaining proper alignment.
Suspension ride height sensor failure in the Mercedes-Benz GLC 300 4MATIC can occur due to wear and tear, electrical issues, or physical damage to the sensor or its components.
Symptoms:
Warning Messages: The dashboard may display warning messages related to the air suspension system, such as "Airmatic Malfunction" or "Stop Car Too Low".
Vehicle Sagging: The vehicle may sag or sit lower than usual, especially on one side or corner.
Rough Ride: You might experience a rough or bumpy ride due to the suspension not maintaining proper height.
Uneven Ride Height: The vehicle may have an uneven ride height, with one side or corner sitting higher or lower than the others.
Noisy Suspension: You might hear unusual noises from the suspension system, such as clicking or clunking sounds.
Extended Compressor Operation: The air suspension compressor may run for longer periods than normal, indicating it is struggling to maintain the correct height.
Mercedes-Benz Suspension Stabilizer Bar Link BPSS20096 Crafted from premium-grade materials, this stabilizer bar link is engineered to deliver exceptional durability and long-lasting performance, ensuring that it can withstand the rigors of daily use and harsh driving conditions.
Some common causes of ignition coil issue are moisture, corrosion, overheating, wear and tear, electrical problems, or spark plug issues.
Symptoms:
Check Engine Light: The dashboard may display the check engine light, often accompanied by fault codes related to ignition coil issues.
Engine Misfire: The engine may misfire, causing jerking or stuttering during acceleration.
Rough Idling: The engine may feel shaky or unstable when the vehicle is idling.
Loss of Power: You might experience a noticeable reduction in engine power and performance.
Poor Fuel Economy: You may observe a sudden increase in fuel consumption.
Difficulty Starting: The engine may be hard to start or take longer to crank.
Parts to Replace
Mercedes-Benz Ignition Coil Hitachi IGC0193 This ignition coil is responsible for converting the battery's low voltage to the high voltage needed to create a spark in the spark plugs, igniting the air-fuel mixture in the engine's cylinders.
Clogged spark plugs in the Mercedes-Benz GLC 300 4MATIC can occur due to carbon deposits from incomplete combustion, poor fuel quality, or oil contamination.
Symptoms:
Check Engine Light: The dashboard may display the check engine light due to misfires.
Poor Acceleration: The vehicle may hesitate to accelerate and take longer to reach your desired speed.
Rough Idle: The engine may feel shaky or unstable when idling.
Poor Fuel Economy: You might observe a sudden increase in fuel consumption.
Hard Starting: The engine may be hard to start or take longer to crank.
Engine Misfire: The engine may misfire, causing jerking or stuttering during acceleration.
Mercedes-Benz Spark Plug NGK 92725 This spark plug ignites the air-fuel mixture in the engine's combustion chamber, ensuring efficient combustion and optimal engine performance.
Some common causes of steering column tilt motor failure are mechanical wear and tear, software glitches, physical obstruction, lack of lubrication, or electrical issues.
Symptoms:
Inability to Adjust Steering Column: The most obvious sign is that the steering column will not move up or down when you try to adjust it.
Unusual Noises: You might hear grinding, clicking, or whirring noises when attempting to adjust the steering column.
Error Messages: The vehicle's dashboard may display error messages or fault codes related to the steering column adjustment system.
Intermittent Functionality: The steering column may work sporadically, sometimes adjusting and other times not responding at all.
Physical Resistance: You might feel resistance or stiffness when trying to manually adjust the steering column.
Loose Steering: The steering wheel feels loose or has excessive play.
Vehicle Pulling: The vehicle pulls to one side while driving, indicating alignment issues.
Difficulty Steering: Increased effort required to turn the steering wheel.
Parts to Replace
Steering Tie Rod End Kit – 5225379 Front Outer is an essential component of a vehicle's steering system. It connects the steering rack to the steering knuckle, allowing the wheels to turn in response to the driver's input.
Loose Steering: The steering wheel feels loose or has excessive play.
Vehicle Pulling: The vehicle pulls to one side while driving, indicating alignment issues.
Difficulty Steering: Increased effort required to turn the steering wheel.
Parts to Replace
Mercedes Steering Knuckle – Rear Driver Left 2133500141 is an essential component for your Mercedes-Benz. This high-quality steering knuckle is designed for precise fit and maximum durability, ensuring optimal performance and reliability.
Mercedes Steering Knuckle – Front Driver Left 2533320101 This steering knuckle offers a range of benefits and features, including exceptional durability, reliability, and precision. Its superior construction helps to reduce wear and tear, ensuring a longer lifespan and more reliable performance.
Some common causes of turbocharger boost sensor failure are air leaks, faulty actuator, intake manifold issue, EGR valve problem, or sensor malfunction.
Symptoms:
Loss of Power: Noticeable decrease in engine power and performance, especially during acceleration.
Check Engine Light: The check engine light may illuminate due to issues with the turbocharger boost sensor.
Poor Fuel Efficiency: Decreased fuel efficiency due to improper boost pressure.
Engine Misfires: Engine misfires or rough idling can occur due to incorrect boost pressure.
Unusual Noises: Whistling or hissing noises from the engine bay, indicating air leaks or boost pressure issues.
Limp Mode: The vehicle may enter limp mode to protect the engine, resulting in reduced power and speed.
Parts to Replace
Turbocharger Boost Pressure Safety Switch 0081538928 With its high-quality construction and precise design, this boost sensor provides accurate readings of the turbocharger’s boost pressure, allowing your vehicle’s engine to operate at its best.
Crankshaft position sensor failure in the Mercedes-Benz GLC 300 4MATIC can occur due to wear and tear, electrical issues, or exposure to extreme temperatures and contaminants.
Symptoms:
Check Engine Light: The dashboard may display the check engine light, often accompanied by fault codes related to the crankshaft position sensor.
Engine Stalling: The engine may stall or hesitate, especially during acceleration or under load.
Difficulty Starting: The engine may be hard to start or take longer to crank.
Poor Engine Performance: You might experience reduced engine performance, including loss of power and poor acceleration.
Engine Misfire: The engine may misfire, causing jerking or stuttering during acceleration.
Excessive Engine Vibrations: The engine may produce excessive vibrations due to incorrect timing.
Parts to Replace
Mercedes Engine Crankshaft Position Sensor 2709051300 – Genuine Mercedes The Genuine Mercedes-Benz Engine Crankshaft Position Sensor part number 2709051300 is an exceptional quality OEM product that will keep your Mercedes-Benz running smoothly.
Mercedes Crankshaft Position Sensor 2709050600 The Genuine Mercedes-Benz Engine Crankshaft Position Sensor part number 2709050600 is easy to install and designed to fit perfectly with your vehicle.
Common fault codes related to starter motor issues include P0615: Starter Relay Circuit, P0616: Starter Relay Circuit Low, and P0617: Starter Relay Circuit High.
Why it happens:
The starter motor issue in the Mercedes-Benz GLC 300 typically occurs due to wear and tear, overheating, or electrical problems.
Symptoms:
Clicking Noise: A clicking sound when you turn the key or press the start button, indicating the starter motor is trying to engage but failing.
No Crank: The engine does not crank or turn over when attempting to start the vehicle.
Intermittent Starting: The vehicle starts sometimes but not consistently, indicating a failing starter motor.
Slow Crank: The engine cranks slowly, which could be a sign of a weak starter motor or battery.
Dashboard Lights: The dashboard lights may dim or flicker when attempting to start the vehicle.
Parts to Replace
Mercedes Starter Motor Bosch SR9602X This starter motor is rebuilt to meet or exceed original equipment manufacturer (OEM) specifications, ensuring reliable performance and longevity.
The serpentine belt issue in the Mercedes-Benz typically occurs due to wear and tear, misalignment, or a faulty tensioner.
Symptoms:
Squealing Noise: A high-pitched squealing noise coming from the engine bay, especially when starting the engine or accelerating.
Visible Wear: Cracks, fraying, or other visible signs of wear on the serpentine belt.
Power Steering Problems: Difficulty steering or a stiff steering wheel due to the belt not properly driving the power steering pump.
Overheating: The engine may overheat if the belt is not driving the water pump effectively.
Battery Warning Light: The battery warning light may illuminate if the belt is not driving the alternator properly, leading to a loss of electrical power.
Parts to Replace
Mercedes Serpentine Belt 0009933900 This Genuine Mercedes-Benz Serpentine Belt, part number 0009933900, is a high-quality replacement part designed to ensure the smooth and efficient operation of your Mercedes-Benz.
Some common causes of fuel injector clogging are poor fuel quality, electrical issues, aging, or wear and tear.
Symptoms:
Rough Idling: The engine may feel shaky or unstable when the vehicle is idling.
Poor Fuel Economy: You might observe a sudden increase in fuel consumption.
Engine Misfire: The engine may jerk or stutter, especially during acceleration.
Loss of Power: The vehicle may experience a noticeable reduction in power and performance.
Check Engine Light: The dashboard may display the check engine light, often accompanied by fault codes related to fuel injector issues.
Fuel Odor: You might detect a strong smell of fuel, indicating a possible leak or malfunctioning injector.
Parts to Replace
Mercedes Fuel Injector Bosch 62437 This fuel injector is engineered by Bosch, a trusted name in automotive components, ensuring reliability and durability. It features a stainless steel construction and is designed for direct injection, providing a fine spray of fuel for efficient combustion.
Some common causes of fuel pressure sensors are mechanical damage, electrical issue, contaminated fuel, software glitches, aging, or wear and tear.
Symptoms:
Check Engine Light: The dashboard may display the check engine light, often accompanied by fault codes related to fuel pressure.
Poor Engine Performance: The engine may struggle to start, run rough, or stall unexpectedly.
Reduced Fuel Efficiency: You might observe a decrease in fuel economy due to incorrect fuel pressure readings.
Loss of Power: The vehicle may experience a noticeable reduction in power and acceleration.
Engine Misfire: The engine may misfire, causing jerking or stuttering during acceleration.
Fuel Odor: You might detect a strong smell of fuel, indicating a possible leak or malfunctioning sensor.
Parts to Replace
Genuine Mercedes-Benz Fuel Pressure Sensor 0009054006 This sensor measures the fuel pressure within the fuel system, ensuring that the engine receives the correct amount of fuel for optimal performance and efficiency.
Some common causes of high pressure fuel pump failure are mechanical damage, electrical issues, contaminated fuel, software glitches, aging, or wear and tear.
Symptoms:
Engine Stalling: The engine may stall or hesitate, especially during acceleration or under load.
Loss of Power: You might experience a noticeable drop in engine power and performance.
Difficulty Starting: The engine may be hard to start or take longer to crank.
Surging or Sputtering: The engine may surge or sputter, particularly at high speeds or under heavy load.
Check Engine Light: The dashboard may display the check engine light, often accompanied by fault codes related to fuel pressure.
Parts to Replace
Mercedes Fuel Pump – Bosch 66804 This fuel pump supplies fuel pressure to the injection system, which is essential for the proper functioning of the engine. It delivers fuel at high pressure to meet the performance and emissions demands of modern engines.
Some common causes of electric fuel pump fault are wear and tear, low fuel level, contamination, low fuel quality, or electrical issue.
Symptoms:
Difficulty Starting: The engine may struggle to start or take longer than usual to start.
Loss of Power: Noticeable loss of power while driving, especially during acceleration.
Engine Stalling: The engine may stall unexpectedly while driving or idling.
Poor Fuel Efficiency: Decreased fuel efficiency due to improper fuel delivery.
Unusual Noises: Whining or humming noises coming from the fuel tank area.
Check Engine Light: The check engine light may illuminate due to fuel pump issues.
Parts to Replace
Mercedes Electric Fuel Pump 2054704900 The Genuine Mercedes-Benz Electric Fuel Pump part number 2054704900 / 205 470 49 00 is a high-quality replacement part for your Mercedes-Benz. This fuel pump is designed to fit perfectly into your vehicle, ensuring optimal performance and reliable fuel delivery.
Some common causes of parking aid sensor failure are physical damage, corrosion, improper installation, wear and tear, electrical issue, or environmental effect.
Symptoms:
Parking Aid Warning Light: The parking aid warning light may illuminate on the dashboard.
Inconsistent Beeping: The parking sensors may beep inconsistently or not at all when approaching obstacles.
False Alerts: The system may give false alerts, indicating obstacles when there are none.
No Alerts: The system may fail to alert you to obstacles, increasing the risk of collisions.
Error Messages: You may see error messages related to the parking aid system on the dashboard display.
The automatic transmission gasket serves as a vital seal between the transmission pan and housing, keeping transmission fluid contained and preventing contamination. Over time, heat cycles, fluid pressure, and natural rubber or composite wear can cause the gasket to harden, crack, or lose elasticity. When this happens, the transmission may leak fluid, leading to pressure loss and shifting irregularities.
Symptoms:
Transmission fluid leak: You may notice red or brown fluid spots beneath the vehicle.
Rough or delayed shifting: Low fluid levels from leaks can cause hard, jerky, or delayed gear changes.
Whining or humming noise: Air entering the system or low fluid can create noise during gear transitions.
Burnt smell or overheating: Fluid loss can cause overheating and burnt transmission odor.
Check Engine Light (CEL): Fault codes related to transmission pressure or clutch performance may trigger the CEL.
Some common causes of clogged cabin air filter are accumulation of dirt and debris, driving conditions, moisture, or lack of maintenance.
Symptoms:
Reduced Airflow: Noticeable decrease in airflow from the vents, making it harder to heat or cool the cabin.
Unusual Odors: Musty or unpleasant odors coming from the vents due to trapped contaminants.
Increased Dust: More dust and debris inside the cabin, indicating the filter is not effectively trapping particles.
Foggy Windows: Difficulty in defogging windows, as the airflow is restricted.
Allergy Symptoms: Increased allergy symptoms for passengers due to pollen and other allergens not being filtered out.
Parts to Replace
Mercedes Cabin Air Filter 1668300218 This filter ensures that the air inside the vehicle remains clean and free from dust, pollen, and other contaminants.
Mercedes Cabin Air Filter 2058350147 this cabin air filter is specifically engineered for Mercedes-Benz models, providing optimal filtration and protection against pollutants.
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.
Frequently Asked Questions
What are the main specifications of the Mercedes-Benz GLC 300 4MATIC (2018–2024)?⌄
The GLC 300 4MATIC features a 2.0-liter turbocharged inline-4 engine producing up to 255 horsepower and 273 lb-ft of torque, paired with a 9-speed automatic transmission. The 4MATIC all-wheel-drive system enhances traction and stability, while EPA ratings average around 24 mpg combined for balanced performance and efficiency.
How reliable is the Mercedes-Benz GLC 300 4MATIC in the US market?⌄
Overall reliability is good for a luxury SUV of its class. However, some owners report minor issues such as infotainment glitches, sensor errors, and occasional suspension noise. Regular maintenance and software updates help keep performance smooth and electronics functioning properly.
What common problems should owners watch for in the GLC 300 4MATIC? ⌄
Common issues may include steering vibration, premature brake pad wear, wheel bearing noise, and electrical sensor malfunctions. These are typically manageable with timely servicing and OEM-quality replacement parts. eEuroparts.com offers solutions to address these concerns effectively.
How much does it cost to maintain the GLC 300 4MATIC in the United States?⌄
Annual maintenance costs typically range from $800 to $1,200, depending on mileage and service schedule. As a premium SUV with advanced technology and AWD, it requires high-quality fluids, filters, and components for long-term reliability and optimal drivability.
Is the Mercedes-Benz GLC 300 4MATIC a good SUV for daily driving in the US? ⌄
Yes, its compact luxury design, comfortable ride, and advanced safety systems make it ideal for daily commuting or long-distance travel. The refined interior and strong fuel efficiency make the GLC 300 4MATIC a smart choice for American drivers seeking comfort and performance.
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