Mercedes-Benz S Class Common Problems and Solutions
Airmatic suspension pump failure
Problem:
The airmatic suspension pump is prone to failure on the S-Class. If the car moves up unevenly, or the pump is very noisy or the warning light remains on, you have an issue with the pump.
Solution:
Replacing this pump can be very expensive. We can help you find one at a very low price.
Difficulty level
Water leaking into front passenger footwell
Problem:
The heater drains can get blocked on this car, causing the water to leak into the front passenger footwell. If you open the bonnet, the heater drain is located at the rear of the engine on the passenger side. This drain can get blocked with leaves and debris, causing potential water leaks into the passenger footwell.
Solution:
You will need to clear the leaves/debris from the drain to stop the water leaking into the passenger footwell. If the carpets are damp you will need to dry them out to stop dampness setting in. Have a look at the video below to see the blocked drain:
Difficulty level
Central locking problems
Problem:
The PSE pump can fail on the S-Class. If this part fails you will notice that some of the doors are not locking/unlocking when you use the key fob.
Solution:
Fitting a replacement PSE pump will resolve the issue.
Difficulty level
Electric window problems
Problem:
If you are having problems with the electric windows on your S-Class, it is usually due to an issue with the motor. Each window has its own motor, so depending on how many windows are affected, will determine the cost of the repair. If the motor is failing you will either notice that the windows move up and down very hesitantly, or they do not move at all.
Solution:
You will need to replace the motor on each affected window. We can help you find replacement electric window motors at very low prices.
Difficulty level