- Park the vehicle and set the parking brake. Open the hood by pulling the hood release under the dashboard.
- Remove the 13mm nut holding the wiper arm. Next, remove the wiper arm by pulling it up. Some models, such as the C-Class or S-Class, have a small plastic on top of the nut that you need to pry off. Try wiggling the arm to get it off the linkage. If you can't remove the wiper arm, use a puller.
- Remove the weather & wind strip.
- Remove the plastic cover (rain tray/cowl/rain diverter) near the firewall. Remove all screws and clips along the perimeter of the plastic cover, then remove it by lifting it.
- Remove bolts that hold the wiper linkage in place. These are 13mm bolts that need to be removed.
- Lift the wiper assembly and disconnect the electrical wire from the wiper motor by pressing the connector then pulling it away from the motor.
- Remove the wiper motor and linkage from the car. Remove the bolts that secure the wiper motor to the wiper assembly and replace the motor.
- Replace the wiper motor and reinstall in reverse order.
The pictures in this guide are from a Mercedes-Benz E-Class W211, but Mercedes uses the same setup in other chassis. This guide will also help owners of Mercedes C, S, CLK, SL, SLK, GL, GLK, GLA, ML learn how to replace the wiper motor.
Frequently Asked Questions
How do I align the wipers properly?
Look carefully at your Mercedes windshield for a dot at the bottom. When you install the wipers, make sure that the wipers are just above this dot. The wipers need to be about 1 inch / 2-3cm above this dot.
Mercedes wiper's arm stuck up.
If your Mercedes-Benz wiper arm is stuck up, turn on the ignition. Turn on the wipers and see if they move. If not, check the windshield wiper fuse and relay. If both are bad, there is a good chance the wiper motor is defective and needs to be replaced.
Can I replace my Mercedes wiper arm myself?
Yes. Plan on one to two hours if you are replacing a Mercedes wiper arm for the first time?
How much does it cost to replace the Mercedes wiper motor?
The cost to change the Mercedes wiper motor varies by location. Typical costs can range from $300 to $650 depending on shop labor rates.