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Mercedes-Benz

Windshield Washer Pump Replace

Brand: Mercedes-Benz
Model: S550 4Matic
Chassis: W221
​Engine: M278
Project: Repair
Labor: 1 hour
清洗泵.jpg

Overview

The Windshield washer fluid pump is provided power to spray washer fluid on the windshield. As washer pumps get old or defective by an electrical surge, they can not provide the power to wash the windshield. An obvious indicator that your washer pump is failing that with normal washer fluid capacity, when you press the switch of the washing windshield, there is no washing fluid spray out. Btw, the windshield washer pump was controlled by the SAM control unit, there is no fuse for the pump. So there will no indicate on the dashboard, also no failure code was saved.

Note:

1, Washing water reservoir

2, Windshield washer fluid pump

Remove

Step 1  Open The Engine Hood

Substep:

1.1 Pull lever in left side of footwell to unlock the engine hood. The engine hood jumps open; lift engine hood slightly if necessary;

1.2 Pull out handle and lift to open engine hood. (Windshield wiper arms must not be folded forward).

Step 2 Make room for replacing washer pump