Mercedes-Benz W168 Rear Wiper Motor 1688200442 - Used Original Parts

Diagnosis and Common Symptoms

From a technician's perspective, the rear wiper motor on the W168 A-Class is a common failure point, typically due to age and water ingress. The primary symptom is a complete failure of the rear wiper to operate when switched on. You might hear a faint click from the relay, but the arm will not move.

Other indicators include the wiper moving very slowly, juddering across the glass, or failing to return to its proper "parked" position at the base of the window. A diagnostic scan with a capable tool may reveal fault codes stored in the Rear SAM (Signal Acquisition Module) related to an open circuit or mechanical jam in the rear wiper motor. Visually, you can often see rust or corrosion around the spindle where it passes through the tailgate glass, which is a clear sign the internal mechanism has been compromised.

Introduction

Restore clear rear visibility in your A-Class with a reliable, cost-effective solution. This is a Genuine Mercedes-Benz rear wiper motor, carefully removed from a donor vehicle. Each unit is professionally bench-tested by our technicians to confirm full functionality, from motor operation to the critical park-switch mechanism, ensuring it performs to factory standards.

Product Details

• Brand: Mercedes-Benz

• Model Compatibility: W168 A-Class

• Part Name: Rear Wiper Motor

• Condition: Genuine Used (Tested Working)

• Notes: This unit has been inspected for common failure points, including water ingress around the main seal and wear on the internal plastic worm gear. The electrical connector pins are clean and free of corrosion. Ensure your wiper arm linkage is not seized before installation to prevent premature failure of this replacement motor.