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.
61 35 107 Removing and installing or replacing junction box electronics
Necessary preliminary tasks
- Clamp off BATTERY NEGATIVE LEAD .
- E72 Only: Disconnect Both negative battery cables.
- Remove TRIM FOR INSTRUMENT PANEL AT BOTTOM RIGHT .
Release screws (1).
Remove air duct (2).
Release screw (1).
Slacken wiring harness in cable holder (2).
Release screw (1).
Lever holders (1) at bulkhead out of passenger compartment fuse box (2) in direction of arrow.
Lower passenger compartment fuse box (2).
Disconnect plug connection (1).
Release screws (1).
Pull junction box electronics (2) in direction of arrow out of passenger compartment fuse box.
Disconnect associated plug connection and remove junction box electronics (2).
Installation:
Make sure junction box electronics (2) is correctly seated in passenger compartment fuse box.
Replacement:
Carry out VEHICLE PROGRAMMING/ENCODING .
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.