Mercedes-Benz Problems

RepairPal has identified the most common problems with the Mercedes-Benz as reported by actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.

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2,814
Known Problems
The third (high) brake light housings melt, resulting in a loss of electrical contact for the light, which stops working. A complete housing (contacts and lens) is needed to repair the problem. On certain vehicles, if this happens, the anti-lock brake system will not function. The brakes will work in normal mode, but not provide the ABS control.
The third (high) brake light housings melt, resulting in a loss of electrical contact for the light, which stops working. A complete housing (contacts and lens) is needed to repair the problem. On certain vehicles, if this happens, the anti-lock brake system will not function. The brakes will work in normal mode, but not provide the ABS control.
Axle lubrication should be performed at each service; the hydraulic fluid in the differential lockers should be changed every two years.
Many software updates are available for the different computer systems, but if the vehicle is out of warranty, it may cost money to receive the updates (unless it is a recall). Some updates may be dealer-only, but a well-equipped independent shop can usually provide updates as well.
Cup holders break easily, especially if sticky liquids are spilled into the cup holder mechanism.
Internal leaks can cause problems with the load leveling suspension in the rear; the vehicle may ride harshly (no give in the suspension, like you are riding on a brick).
Internal leaks can cause problems with the load leveling suspension in the rear; the vehicle may ride harshly (no give in the suspension, like you are riding on a brick).
Due to uneven camshaft and rocker arm wear, lifters and rocker arms can be noisy, sounding like tapping coming from under the hood. The cam and all the rocker arms should be replaced.
Oil feed tubes break and fall into the crankcase (engine) and the tappet becomes noisy (ticking), resulting in degraded idle quality. Our technicians recommend replacing all of the tubes at the same time, broken or not.
The rubber boot connecting the throttle body to the intake manifold tends to crack. This can cause hard starting, rough or erratic idle, and engine performance problems.
On high mileage vehicles, rear spring wear may cause the rear end to sag.
Glove box hinges, the center console armrest, and the cup holders break.
Glove box hinges are known to break.
Leaks from the fuel pressure accumulator or a faulty cold start fuel injector (fuel system components) can cause hard starting problems.
Fuel leaks can develop around the high pressure fuel injection pump.