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Home >> Mercedes Benz >> 1994 >> C220 >> Repair and Diagnosis >> External Pages >> Different car >> Section 19 (Suspension - Rear) >> Hydraulic System Refill >> Automatic Locking Differential (ASD)

Automatic Locking Differential (ASD)

WARNING: This page is about a different car, the 1994 Mercedes-Benz E500, 1994 Mercedes-Benz E420, and 1994 Mercedes-Benz E320. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition off. Remove ASD control unit from vehicle. ASD control unit is located next to vehicle battery. Connect a jumper wire between ASD control unit connector terminals No. 8 and 10. Start engine and let idle.
  2. Open bleed screw on right annular cylinder. Annular cylinder is located on differential. Let hydraulic fluid flow until fluid is free of air bubbles. Check reservoir and fill to proper level.