Seat Pan, Disassembling and Assembling
Power Front Memory Seats
• From 06.2006, the usual wiring harness routing to connector station under front seat. Refer to => [ Connectors, Disconnecting ] Front Seats has been replaced with modular wiring routing => [ Modular Wiring Routing Assembly Overview, from June 2006 ] Front Seats.
• The modular wiring routing has not been implemented for all countries.
• Check version of front seat and of vehicle and perform repairs accordingly.
• Note the two possible versions of the modular wiring routing, Modular Light or Modular. Refer to => [ Modular Wiring Routing Versions ] Front Seats.
Seat Pan, Disassembling and Assembling
Special tools, testers and auxiliary items required
• Engine and transmission holder (VAS 6095)
• Fixture for seat repair (VAS 6136)
Removing
CAUTION!
• Observe safety precautions for work on airbags.
• 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.
- Remove front seat. Refer to => [ Seat ] Power Front Memory Seats.
- Attach seat to Fixture For Seat Repair (VAS 6136 ).
- Remove front backrest. Refer to => [ Front Backrest ] Power Front Memory Seats.
- Remove cover with cushion from seat pan. Refer to => [ Seat Pan Cover and Cushion, Standard Seat ] Front Seat Covers and Cushion, Power Memory Seats.
- Remove the bolts - 1 - (quantity 4).
- Remove bolts - 3 - (Qty. 2).
- Remove the upper frame of the seat pan - 4 - from the seat rails - 5 -.
Installing
- Install the upper frame of the seat pan - 4 - on the seat rails - 5 -.
- Install removed cover with cushion in new seat pan. Refer to => [ Seat Pan Cover and Cushion, Standard Seat ] Front Seat Covers and Cushion.
Further installation is performed in the reverse order of removal. Observe the following when doing so:
CAUTION!
• Observe safety precautions for work on airbags.
• 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.
• Ensure that electrical connections are pushed in as far as stop and engage with a click.
- Switch on ignition.
CAUTION!
Ignition must be on when connecting battery. If pyrotechnic components (e.g. airbag, belt tensioner) are not repaired correctly, they may deploy unintentionally after connecting battery. There must not be anyone inside the vehicle when connecting the battery.
- Connect battery ground wire with ignition switched on.
- If Airbag Malfunction Indicator Lamp (MIL) (K75 ) indicates a fault after installation, DTC memory must be checked, deleted and checked again => Vehicle Diagnosis, Testing and Information System (VAS 5051B).
Tightening specifications, refer to => [ Seat Pan Assembly Overview, through April 2003 ]
Seat Pan, Disassembling and Assembling
Disassembling
CAUTION!
• Observe safety precautions for work on airbags.
• 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.
- Remove front seat, Refer to => [ Seat ] Power Front Memory Seats.
- Attach seat to Fixture For Seat Repair (VAS 6136 ).
- Remove the backrest, Refer to => [ Front Backrest ] Power Front Memory Seats.
- Remove cover with seat pan cushion, Refer to => [ Seat Pan Cover and Cushion, Standard Seat ] Front Seat Covers and Cushion, Power Memory Seats.
- Disconnect electrical connectors if necessary.
Seat pan upper frame, replacing
- Remove spring mat with wiring harness from seat pan upper frame, Refer to => [ Spring Mat with Seat Pan Wiring Harness ] Power Front Memory Seats.
Continuation: Upper or lower frame, replacing
- Remove bolts - 1 - (Qty. 3).
- Remove the bolt - 4 -.
- Remove the bolt - 5 -.
- Remove seat pan upper frame - 2 - upward from lower frame - 3 -.
- Be careful of bushings - 1 - in bearing points.
2 Lower seat pan frame
CAUTION!
• Do not damage bushings - 1 - inserted in all bearing points when separating or disassembling upper and lower frame.
• The bushings cannot be replaced with workshop materials.
• If the bushings are damaged, the corresponding assembly parts must be replaced.
- Remove Driver's Seat Height Adjustment Motor ( V245) or Front Passenger's Seat Height Adjustment Motor (V246). Refer to => [ Seat Height Adjustment Motor ] Power Front Memory Seats.
- Remove the driver seat angle adjustment motor ( V243) or front passenger seat angle adjustment motor (V244)., Refer to => [ Seat Angle Adjustment Motor ] Power Front Memory Seats.
Seat pan, assembling
To install, perform the steps used in removal in reverse order. Observe the following when doing so:
CAUTION!
• Observe safety precautions for work on airbags.
• 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.
- Install removed Driver's Seat Height Adjustment Motor (V245) or Front Passenger's Seat Height Adjustment Motor (V246) in new seat pan lower frame. Refer to => [ Seat Height Adjustment Motor ] Power Front Memory Seats.
- Install the driver seat angle adjustment motor ( V243) or front passenger seat angle adjustment motor (V244) in the new seat pan lower frame. Refer to => [ Seat Angle Adjustment Motor ] Power Front Memory Seats.
- Install spring mat with wiring harness in seat pan upper frame. Refer to => [ Spring Mat with Seat Pan Wiring Harness ] Power Front Memory Seats.
- Do not damage bushings - 1 - during further assembly.
CAUTION!
• Do not damage bushings - 1 - inserted in all bearing points when separating or disassembling upper and lower frame.
• The bushings cannot be replaced with workshop materials.
• If the bushings are damaged, the corresponding assembly parts must be replaced.
• Ensure that electrical connections are pushed in as far as stop and engage with a click.
- Switch on ignition.
CAUTION!
Ignition must be on when connecting battery. If pyrotechnic components (e.g. airbag, belt tensioner) are not repaired correctly, they may deploy unintentionally after connecting battery. There must not be anyone inside the vehicle when connecting the battery.
- Connect battery ground wire with ignition switched on.
- If Airbag Malfunction Indicator Lamp (MIL) (K75 ) indicates a fault after installation, DTC memory must be checked, deleted and checked again => Vehicle Diagnosis, Testing and Information System (VAS 5051B).
Tightening specifications, refer to => [ Seat Pan Assembly Overview, from April 2003 ]