Overview - Front Backrest, Lumbar Support

WARNING: This page is about a different car, the 2021 Audi S4 and 2021 Audi A4 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Exploded View Of Front Backrest, Lumbar Support

Courtesy of AUDI OF AMERICA, LLC

Electro-Mechanical Lumbar Support
- Manufactured by Brose
- Removing and installing. Refer to LUMBAR SUPPORT ADJUSTMENT MOTORS -V125- / -V126- / -V129- / -V130-, REMOVING AND INSTALLING .
Electro-Mechanical Lumbar Support
- Manufactured by Schukra
- Removing and installing. Refer to LUMBAR SUPPORT ADJUSTMENT MOTORS -V125- / -V126- / -V129- / -V130-, REMOVING AND INSTALLING .
Fixed Lumbar Support
- No motors
- Equipped on some models: power backrest adjustment without lumbar support
- Removing and installing. Refer to LUMBAR SUPPORT ADJUSTMENT MOTORS -V125- / -V126- / -V129- / -V130-, REMOVING AND INSTALLING .
Tension Springs
- For spring mat
- Note the different lengths
Spring Mat
- Equipped on some models: manual backrest adjustment without lumbar support
- Removing and installing. Refer to SPRING MAT, REMOVING AND INSTALLING .
Backrest
- Removing and installing. Refer to FRONT BACKREST, REMOVING AND INSTALLING .
Backrest Cover
- Removing and Installing:
  - Standard/Sport seat. Refer to BACKREST COVER, REMOVING AND INSTALLING, STANDARD/SPORT SEAT .
  - Super sport seat. Refer to BACKREST COVER, REMOVING AND INSTALLING, SUPER-SPORT SEAT .
- Make sure it is engaged properly after installing
Tension Springs
- For spring mat
- Note the different lengths
Bolt
- 33 Nm
- Quantity: 4
- Self-locking
- Replace after removing.
- Threaded holes for the bolts must be cleaned, for example, with a thread tap
Pneumatic Lumbar Support
- Removing and installing. Refer to LUMBAR SUPPORT AIR CUSHION, REMOVING AND INSTALLING .
Bolt
- Tightening specification. Refer to -Item ) OVERVIEW - PNEUMATIC SYSTEM - List Item: Bolt
Rivet