Seat Adjustment Inoperative With Door Open
WARNING: This page is about a different car, the 1999 Mercedes-Benz E55, 1998 Mercedes-Benz E430, 1998 Mercedes-Benz E320, and 1998 Mercedes-Benz E300. However, it is still accessible from the selected car via links, so may be relevant.
If seat adjustment does not operate with door open and ignition switch in LOCK position, check the following as possible cause and repair as necessary:
- Perform TEST 21: CAN H DATA LINE BETWEEN POWER SEAT CONTROL MODULE & COMBINATION CONTROL MODULE under SYSTEM TESTS (POWER SEATS).
- Perform TEST 22: CAN L DATA LINE BETWEEN POWER SEAT CONTROL MODULE & COMBINATION CONTROL MODULE under SYSTEM TESTS (POWER SEATS).
- Perform TEST 23: CAN H DATA LINE BETWEEN POWER SEAT CONTROL MODULES under SYSTEM TESTS (POWER SEATS).
- Perform TEST 24: CAN L DATA LINE BETWEEN POWER SEAT CONTROL MODULES under SYSTEM TESTS (POWER SEATS).
- Perform TEST 25: CAN L/CAN H DATA LINE SHORTED TOGETHER under SYSTEM TESTS (POWER SEATS).
- Check front door pin switch circuits. See PNEUMATIC & POWER DOOR LOCK SYSTEMS article.