Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
52 26 309 Removing and installing/replacing lock for left rear seat backrest (through-loading system)
Slide lock trim on edge of backrest side upwards slightly and clip out to one side, then slide trim section on rear side slightly to center, unclip and remove.
Installation:
- Clips of trim must not be damaged.
Partially lift cover (1) off rear seat backrest.
E46 only:
Remove lockplate (1) and unhook actuating rod (2) for seatback release.
E83 only:
Lockplate (1) omitted. Unhook actuating rod (2) for seatback release.
Installation:
- Fit bush (3) and new lockplate (1).
- Perform function check with rear seat back-rest folded forward.
Release screws and fold back backrest lock.
Summary, backrest lock, left:
Unhooking seat belt Bowden cable from backrest lock:
Press lever (1) forwards in direction of arrow.
Remove sleeve for Bowden cable (2) from holder (3) in backrest lock.
Unhook Bowden cable from lever (1).
Summary, backrest lock, left:
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.