Install lumbar support on front seat
WARNING: This page is about a different car, the 2025 BMW M4, 2024 BMW M4, 2023 BMW M4, 2022 BMW M4, and 2021 BMW M4. However, it is still accessible from the selected car via links, so may be relevant.
Precondition
Lumbar support and backrest width adjustment completely depressurized.
- Carefully insert the lumbar support (1) complete with pump unit and valve block as shown.
- Position the lumbar support (1) at the clips (3) and clip in.
- Connect plug connections (2) and clip in existing cable clips.
NOTE:
Perform the steps on the right and left side.
- Position the air cushion of the backrest width adjustment (2) on the left and right and tighten screws (1).
Follow-up work
- Refer to INSTALLING THE DRIVE FOR HEAD RESTRAINT HEIGHT ADJUSTMENT .
- Refer to INSTALLING THE BACKREST COVERING WITH THE CUSHION .
- Refer to INSTALLING THE INNER COVER ON THE FRONT SEAT .
- Refer to INSTALLING OUTER COVER ON FRONT SEAT .
- Refer to INSTALLING THE HEAD RESTRAINT .
- Refer to INSTALLING THE REAR PANEL ON THE FRONT SEAT BACKREST .
- Refer to AFTER CONTINUING WORK ON THE FRONT SEAT: DISCONNECTING THE FRONT SEAT FROM THE WIRING HARNESS OF THE VEHICLE AND REMOVING IT FROM THE UNIVERSAL SEAT MOUNT .
- Refer to INSTALLING DRIVER'S SEAT .