52 14 899 Additional work (normal/electric) with defective drive for longitudinal adjustment: Notes

Move backrest forward to maximum extent.

Move front seat back/upwards, until screws (1) are accessible.

Release screws (1) on front seat (2).

Fig 1: Releasing Screws On Front Seat

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Installation: 

Replace screws (micro-encapsulation).

Tightening Torque, refer to 52 10 6AZ in SEATS - TIGHTENING TORQUES .

Raise front seat (1), until support (2) is free of sleeve (3) on left/right.

Do not move front seat completely backwards (cable).

Fig 2: Raising Front Seat

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Raise front seat a little.

Feed cable (1) for belt tensioner (2) out of support (3).

Disconnect plug connection from servodrive for longitudinal seat adjustment.

Fig 3: Removing Feed Cable For Belt Tensioner

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Tilt front seat (electric) back so that it does not yet touch rear seat bench.

Release screws (1) from servodrive (2) for longitudinal seat adjustment and detach servodrive (2).

Fig 4: Removing Longitudinal Seat Adjustment Servodrive

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Disconnect plug connection (3) to servodrive for longitudinal seat adjustment.

Activate the operating switch for the seat position adjustment:

1. No function:
   • Disconnect Plug Connection (3).
   • Connect New Servodrive (2)
   • Check Function
   • If Servodrive Is Running, Gear Is O.K.
   • Reassemble Front Seat
2. Actuator drive running:
   • Transmission for longitudinal seat adjustment defective!
   • Continue with

     Disassembly of faulty gear for longitudinal seat adjustment.