2023-2024 BMW X7 Third Row Seat Bowden Cable Change

Why This Matters

BMW has implemented a change in the routing of the Bowden cables for the third-row seat backrest in G07 X7 Sports Activity Vehicles equipped with the power third-row seat (option code SA4UB). This change means that replacement Bowden cables are now shorter than the original parts. If your vehicle was produced prior to February 2023, installing these new, shorter cables requires a specific, updated routing procedure. Incorrect routing of the BMW X7 third row seat Bowden cable could lead to improper seat function.

Affected Components and Parts

The issue specifically involves the Bowden cables that control the third-row seat backrest. The new, shorter design of these cables necessitates a revised installation process. The relevant part numbers for these cables are:

• 52 30 5 A1E 228: Inboard Bowden Cable (up to 2 needed)
• 52 30 5 A1E 229: Outboard Bowden Cable (up to 2 needed)

These parts are designed to work with the updated routing procedure.

Repair Procedure Summary

Technicians must follow a detailed procedure to correctly replace the BMW X7 third row seat Bowden cable. The process involves several key steps:

1. Cable Identification: Determine whether the existing Bowden cable is the longer, old type or the shorter, new type introduced in February 2023 production vehicles.
2. Removal of Old Cables: This involves placing the seat structure in an upright position, moving down the headrest actuator to release cable tension, removing the plastic cover from the actuator, unclipping the Bowden cable barrel from the actuator housing, and detaching the cable from various clips and brackets within the seat structure. For old Bowden cables, specific steps are required to remove them from the white plastic fixation clip and pulley channels.
3. Assembly of New Cables: For new Bowden cables, the routing does not require the white fixation clip. The cable should run under the back panel and on the side of the ISOFIX bracket. The procedure specifies how to insert the snowman clip into the latch for the outboard side and align the end barrel for the inboard side, ensuring the wire is correctly looped through the pulley.
4. Attachment to Actuator: The new Bowden cable spring is attached to the spindle nut of the actuator. The cable barrel is then pulled and pushed into place in the actuator until a click is heard.
5. Reassembly and Testing: After the cables are installed, the actuator cover is reinstalled, and a function test of the seat is performed to confirm proper operation.

For more detailed diagnostic information regarding the head restraint and/or backrest of the third seat row, technicians are directed to Service Bulletin B52 09 20. General seat-related bulletins are covered in Service Bulletin B52 23 19.

Important Warnings

Owners and technicians should be aware of the following critical information:

• All replacement parts are the new “shortened cable” design version. This design requires the use of the new routing procedure when installed in vehicles produced prior to February 2023. Failing to follow the correct routing could lead to malfunction of the BMW X7 third row seat Bowden cable.
• This repair is designated as "MOBILE FRIENDLY," indicating it can potentially be performed by mobile service technicians.

Warranty Information

Repairs addressing verified defects in materials and/or workmanship are covered under the terms of the BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks. To submit a claim, technicians must follow established warranty policy and procedures, referring to AIR for corresponding Repair Codes and flat rate unit (FRU) allowances. For detailed claim procedures, refer to Service Information Bulletins SI B01 01 20 or B01 07 20.

NHTSA ID: 10244505