Driver and Front Passenger Height Adjustment Motors
Power Front Memory Seats
• From 07.2006, the usual wiring harness routing to connector station under front seat => [ Connectors, Disconnecting ] Power Front Memory Seats Overview has been replaced with modular wiring routing => [ Modular Wiring Routing, from 07.2006, Assembly Overview ] Standard Front Seats Overview.
• 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 => [ Modular Wiring Routing Versions ] Standard Front Seats Overview.
Driver and Front Passenger Height Adjustment Motors
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 => [ Airbag Inspection ] .
- Remove front seat => [ Power Front Memory Seat ].
- Disconnect the electrical connector on the seat fore/aft adjustment motor.
- Remove the screw - 1 -; to do this, connect the contacts on the motor with a battery using the cables from the connector test set (V.A.G 1594C) and bring the seat forward/backward adjustment into position shown - 1 -.
- Remove the mount - 2 - for the belt latch - 3 - and disconnect the seat belt fastening sensor connector.
- Mount the fixture for seat repair (VAS 6136) on the engine and transmission holder (VAS 6095).
- Attach the seat to the fixture for seat repair (VAS 6136).
- Remove side trim on sill side => [ Side Trim, Sill Side ].
- Remove side trim on tunnel side => [ Side Trim, Tunnel Side ].
- Create photos or sketches of wire securing and routing.
- Remove the front backrest => [ Front Backrest ].
• If the front backrest is not removed, the load on the seat frame will cause the "ceramic sleeves" to break.
- Remove the bolt - 1 -.
- Remove the nut - 4 - and then remove the screw - 3 -.
- Fold the seat pan - 2 - up - arrow - and secure it with a wooden block so it does not fold back down.
• The bushings - 1 - in the bearings on the lower seat pan frame - 2 - must not be damaged with folding the frame upward.
- Disconnect electrical harness connector - 2 -.
- Remove the screws - arrows - and remove the height adjustment motor - 1 -.
Installing
CAUTION!
Observe safety precautions for work on airbags => [ Airbag Inspection ] .
Installation is reverse of removal, noting the following:
CAUTION!
• Damaged bushings - 1 - cannot be replaced with workshop materials.
• If the bushings get damaged, the lower seat pan frame - 2 - must be replaced.
- Clean the threaded bolt holes for self-locking nuts, for example using a thread tap.
- Replace all self-locking bolts.
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.
- Make sure the clip - A - and plastic toothed segment collar - 2 - as well as locking pins - B arrows - are inserted correctly in holes on fitting - 1 -.
- Make sure the plastic toothed segment - 2 - is clipped to fitting - 1 - correctly.
Plastic toothed segment collar - arrow C - must contact fitting - 1 - evenly.
- Route and secure wiring according to photos or sketches that were made.
- Ensure all connectors are engaged correctly.
• Ensure that electrical connections are pushed in as far as stop and engage with a click.
• Ensure wires are not pinched.
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. Maintain personal safety when connecting the battery by staying out of airbag deployment areas, keeping a distance from belt tensioners/seat belts and ensuring no other people are in the vehicle interior at the moment when the battery is connected.
- Switch on ignition.
- Connect battery with ignition on, procedure =>.
- If Airbag Malfunction Indicator Lamp (MIL) (K75) indicates a fault after installation, DTC memory must be checked, deleted and checked again.
- For seats with seat memory: Perform a basic setting for backrest or seat after installing seat in vehicle.
Tightening specifications => [ Height Adjustment Motor Assembly Overview ] Power Front Memory Seats Overview.