Certified Specialists Maintain and Repair Mercedes-Benz (no smart cars)

Skilled mechanics address routine issues and complex problems

Ask a Mercedes dealer for a reason to buy and you’ll hear, “The best or nothing.” That’s the image of luxury and performance the Mercedes-Benz brand has cultivated 1926. But, even if the slogan were true, “the best” is still not perfect. Popular Mercedes models such as the G-Class, E-Class, Maybach, and ML-Class have particular problems that owners must be alert for. At Oldwick Village Garage, our mechanics are certified specialists in Mercedes and other European luxury cars. We skillfully perform routine maintenance according to factory specifications and diagnose performance problems using factory-specific computer software. When you have an issue with your Mercedes, we provide quality service and OEM approved parts, so you’re out of the shop and back on the road in a timely, cost-effective manner.

Common problems with popular Mercedes models

Mercedes-Benz vehicles were once famous for appreciating in value, making them a sound investment as well as a luxurious ride. A Mercedes is still likely to retain its value if you adhere to your maintenance schedule, but there are common problems that can add to the expense of upkeep. These include:

  • Ignition – Electronic Keys, Electronic Ignition Switch(EIS), and Electronic Steering Lock (ESL) are all known to fail. These can make the engine not able to crank, or not allow the key to turn at all. All of these components are Theft related parts(TRP) which will require a NASTF license to order.
  • Gear shift – Mercedes gear shifts commonly get stuck in park due to a failure in the gear selector module (ISM module). Another Theft Related Part.
  • Transmission – Mercedes’ 5-speed automatic transmission has a fine reputation, but defective valve body and conductor plate issues have posed problems for many cars. When the valve body fails, sometimes after just 50,000 miles, owners can expect a range of performance issues, such as erratic shifting and jolting while changing gears. It may be impossible to get into a higher gear, so that you cannot drive above 40 miles per hour. The engine may rev high, but the car just won’t move. However, the problem could also be failed sensors in your conductor plate, which can be easier and less costly to repair. Owners with 7-speed automatic transmission can also experience rough shifting, especially going from first to second, and from third down to second. Transmission fluid leaks are common due to worn seals on the electrical connection plug that screws into the conductor plate. Shift linkage bushings on older models will wear away and causing noises when shifting from park to drive or reverse.
  • Electrical – Window regulators fail making it hard or impossible for windows to open and close. Many models have a secondary battery that will get weak and fail overtime. This will usually put a message on the dash. We can test and replace these batteries and the main battery. Multiple electronic control modules can fail as well causing all kinds of strange electrical complaints.
  • Engine – Mercedes engines will often crank without starting, because of a failure with the crankshaft position sensor. Or, the engine will rattle at startup due to a worn timing chain tensioner. Problems with the mass airflow meter can cause a poor running condition. Oil-filled engine mounts can start to fail at around 100,000 miles, leading to engine vibration that could cause additional damage. Variable valve timing issues are also common on many Mercedes models as well. Oil cooler seals under the intake manifold on the diesel models will leak oil and is very messy. Replacing these seals and walnut blasting the intake valves will need to be done about every 80000 miles. Intake manifold variable runner linkage break and will make the engines run poor on start up on many models.
  • Exhaust and emissions – Starting at about 100,000 miles, your car’s catalytic converter may become less effective. You may notice performance issues, misfire, and hesitation. The oxygen sensors monitoring the catalytic convertor function should trigger the service engine light to come on.
  • Suspension and steering – Vehicles equipped with air suspension are prone to failure. Rubber air springs deteriorate and leak air leaving your car sagging overnight. Air compressors for air suspension will get weak and fail after a few years as well. Conventional hydraulic suspensions have typical failures such as worn out shock absorbers and rusted coil springs breaking.

When you trust your Mercedes to Oldwick Village Garage, you can have confidence in our repairs now and in the future.

Capable servicing of your Mercedes 4MATIC drive system

4MATIC is the Mercedes automatic all-wheel drive system used on many models. On slippery surfaces, 4MATIC provides enhanced traction and acceleration. The computerized electronic stability program sends commands that regulate the drive torque in each wheel individually. Due to the system’s complexity, earlier versions were prone to problems which have been worked out in later iterations. If you are experiencing difficulty with your Mercedes 4MATIC, you can trust our certified specialists to diagnose the problem and make the necessary repairs. 4matic systems also should get routine maintenance. Changing drivetrain fluids is essential to maximize the life of your 4matic system and all drivetrain components.

Trust our certified specialists to service your Mercedes-Benz

Your luxury car is a significant investment; protect that investment by consulting the right mechanics for the job. At Oldwick Village Garage, we are certified specialists qualified to maintain and repair a variety of European luxury cars, including Mercedes-Benz. Call us today at (908) 439-2236 to schedule an appointment.