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Most reported Mercedes-Benz problems

 

Verified for the Mercedes-Benz CLK320

The crankshaft position sensor may fail. Symptoms of this are: The engine will crank—but not start—especially when the engine is warm. The car may start again if it is left to cool off, but it may run roughly or have poor performance.

33 Reports
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Verified for the Mercedes-Benz S500

Problems with the pneumatic system can cause closing assist and door lock issues.

32 Reports
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Verified for the Mercedes-Benz C230

The mass air flow sensor can fail, resulting in poor fuel economy and Check Engine Light illumination.

32 Reports
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Verified for the Mercedes-Benz ML500

The engine may develop a stalling and/or no start condition due to a failed crankshaft position sensor.

32 Reports
Me Too

Verified for the Mercedes-Benz ML320

A no start condition may develop due to an anti-theft system fault. If the drive authorization module fails to recognize the keys, the engine will not start. In many cases, a new module and keys will be needed to correct this problem.

32 Reports
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Verified for the Mercedes-Benz S550

The HVAC blower motor may fail. This is commonly caused by water entry through the cabin air filter areas during heavy rain or snow. Failed blower motors should be replaced. Our technicians tell us there is no special fix for this issue at this time.

32 Reports
Me Too

Verified for the Mercedes-Benz S420

Problems with the pneumatic system can cause closing assist and door lock issues.

30 Reports
Me Too

Verified for the Mercedes-Benz R350

Vehicles equipped with a 7-speed automatic transmission may develop a rough shifting condition, most commonly going up from first to second gear and going down from third to second or second to first gear. Our technicians tell us this is due to an internal component failure. Mercedes has released updated parts; the transmission will need to be removed and disassembled to complete the necessary repairs.

30 Reports
Me Too

Verified for the Mercedes-Benz S500

The door for the vanity mirror (or the frame for the door) can break; due to a redesign, the mirror "cassette" will need replacement.

29 Reports
Me Too

Verified for the Mercedes-Benz GL450

Vehicles equipped with a 7-speed automatic transmission may develop a rough shifting condition, most commonly going up from first to second gear and going down from third to second or second to first gear. Our technicians tell us this is due to an internal component failure. Mercedes has released updated parts; the transmission will need to be removed and disassembled to complete the necessary repairs.

29 Reports
Me Too

Reported by Lino and 28 others for the Mercedes-Benz ML320

How do you fix this?

29 Reports
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Reported by archytype and 28 others for the Mercedes-Benz ML350

When turning the ignition key there is either a several second wait, or will have to retry.
Car has left me stranded, where key is in the on position but nothing registers and only auxiliary electrical works (stuff that works when no key in ignition.)
This problem started occurring after a service interval where half a dozen error messages required some steering parts to be replaced.
Knauz Mercedes kept the car for a week and could find no fa...

29 Reports
Me Too

Verified for the Mercedes-Benz C320

The engine may develop a stalling and/or no start condition due to a failed crankshaft position sensor.

28 Reports
Me Too

Verified for the Mercedes-Benz CLK500

A repetitive clicking noise from behind the center area of the dash panel is usually caused by a broken stepper motor actuating arm. The actuating arm controls the direction of air flow in the climate control system. Disassembly of the center console will be required to access and change the broken arm with the updated, reinforced part.

28 Reports
Me Too

Verified for the Mercedes-Benz C280

Trunk springs can break and cause the trunk lid to fall back down when opened.

27 Reports
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