Front Seat With Faulty Seat Adjustment Motor Control Module, From April 2003

Front Seat with Faulty Seat Adjustment Motor Control Module, from April 2003

• If possible: Tilt seat up.

• Before disconnecting battery: Obtain coding of radio.

• Seat is shown without cushion and without backrest in picture for the sake of a better illustration.

CAUTION!
Loosen bolts - 6 - only after checking electrical or electronic components and wires.

After loosening the bolts - 6 -, replace the seat pan lower section - 7 - including the seat forward/back adjustment motor (V288) with the transverse member - 9 -.





1 Bolt

• Tightening specification. Refer to => [ Seat Pan Assembly Overview, from April 2003 ] Power Front Memory Seats

• Threaded holes for screws must always be cleaned (for example, with thread cutter)

2 Bolt

• Tightening specification. Refer to => [ Seat ] Seat

• Quantity: 4

3 Bolt

• Tightening specification. Refer to => [ Seat Pan Assembly Overview, from April 2003 ] Power Front Memory Seats

4 Seat Pan Upper Frame

• Removing

CAUTION!
Observe safety precautions for work on airbags.

- Remove screw - 1 -.

- Remove nut - 5 - and bolt - 3 -.

- Fold seat fully toward front. If necessary: Remove steering wheel.

• Steering Wheel, Removing and Installing, refer to =>
Steering Steering

CAUTION!
Before handling airbag units (e.g. disconnecting electrical connector), the person handling it must "discharge static electricity". This can be done by touching door striker, for example.

• Check electrical and electronic components and wires before removing seat further to avoid unnecessary repair costs.

- Perform the following tests:

• Check fuse.

• Check voltage at connector station, perform fault-finding if necessary

• Check voltage to control module.

• Check the voltage to the seat forward/back adjustment motor (V288).

- If fuse is faulty: replace fuse.

- If voltage to connector station is low: repair or replace wire.

- If the control module is faulty: Replace control module. Refer to => [ Control Module ] Control Module.

- If Seat Fore/Aft Adjustment Motor (V288) is faulty: replace lower frame of seat pan - 7 - => [ Seat Pan, Disassembling and Assembling ] Power Front Memory Seats.

Continue removing only if the seat forward/back adjustment motor (V288) is faulty

- Disconnect battery ground wire.

- Remove bolts - 6 - (Qty. 4).

CAUTION!
Before removing seat: Disconnect battery ground (GND) strap.

- Disconnect connector - 8 -.

- Tip front seat back.

- Move seat until bolts - 2 - (Qty. 4) are visible.

- Remove bolts - 2 - (Qty. 4).

- Disconnect harness connectors. Refer to => [ Connectors, Disconnecting ] Power Front Memory Seats.

- Connect airbag adapter. Refer to => [ Airbag Adapter, Connecting ] Power Front Memory Seats.

- With help from a second technician, lift front seat out of vehicle.

- Disconnect seat pan lower frame - 7 - and upper frame - 4 -. Refer to => [ Seat Pan, Disassembling and Assembling ] Power Front Memory Seats.

- Replace the seat pan lower frame - 7 - with the seat forward/back adjustment motor (V288) with the transverse member - 9 -. Refer to => [ Seat Pan, Disassembling and Assembling ] Power Front Memory Seats.

5 Nut

• Threaded holes for screws must always be cleaned (for example, with thread cutter)

6 Bolt

• Quantity: 4

• for transverse member to seat pan lower frame

7 Lower Seat Pan Frame

• replace => [ Seat Pan, Disassembling and Assembling ] Power Front Memory Seats

8 Connector

9 Seat Forward/Back Adjustment Motor (V288) with transverse member

• After removing the bolts. - 6 -replace the seat pan lower frame with the seat forward/back adjustment motor ( V288) and transverse member. Refer to => [ Seat Pan, Disassembling and Assembling ] Power Front Memory Seats

• Installing

- Install front seat. Refer to => [ Seat ] Seat.