Four-Way Lumbar Support, Without Active Head Restraint System
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.
Four-Way Lumbar Support, without Active Head Restraint System
Special tools, testers and auxiliary items required
• Special pop rivet pliers (V.A.G 1753A)
Removing
CAUTION!
Observe safety precautions for work on airbags => [ Airbag Inspection ] .
- Remove front seat:
• Front seat (standard seat) => [ Standard Front Seat ] Standard Front Seats
• Front seat (memory seat, electric seat) => [ Power Front Memory Seat ].
- Remove backrest panel:
• Front seat (standard seat) => [ Backrest Cover ] Standard Front Seats
• Front seat (memory seat, electric seat) => [ Backrest Cover ]
- Pry fastening strips - 6 - (Qty. 4) out with a screwdriver.
- Insert foil between upholstery and backrest frame to protect against metal particles.
- Drill out rivet - 5 -.
- Disconnect electrical connectors at lumbar support curvature and height adjustment motors - 4 - and - 7 -.
- Disengage four-way lumbar support - 3 - with springs - 2 - (Qty. 2) at backrest frame - 3 -.
- Disconnect Velcro connector between lumbar support - 2 - and backrest padding - 1 -.
- Disengage lumbar support - 2 - at top of support frame - 3 -.
- Remove lumbar support frame - 3 - with lumbar support - 2 -.
Installing
CAUTION!
Observe safety precautions for work on airbags => [ Airbag Inspection ] .
- Lay plastic film - 1 - over Velcro strips - 4 - on lumbar support. Secure plastic film on lumbar support.
- Ensure lumbar support is attached to lumbar support frame with assembly fastener - 5 - or a suitable screw.
- Position four-way lumbar support frame behind backrest frame and engage top of frame - 3 - in mounts on backrest frame at left and right with springs - 2 -.
- Before securing rivet - 4 -, a plastic washer - 1 - must be placed between lumbar support - 2 - and backrest frame - 3 -.
- Rivet lumbar support frame - 2 - with backrest frame - 3 -.
- Remove plastic film between backrest padding and lumbar support.
- Press lumbar support Velcro fastener onto backrest padding to secure.
- Connect electrical connectors at curvature and height adjustment motors.
Further installation is performed in the reverse order of removal. Observe the following when doing so:
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.
• 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 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.