61 35 950 - Removing and installing/replacing control unit for comfort access system

Important!
Read and comply with notes on protection against electrostatic discharge (ESD protection) 61 35 ... Notes on ESD Protection (Electro Static Discharge).

Note:
The comfort access system is a radio-based system and can be interfered with by radio waves from other systems (e.g. mobile phone).

Necessary preliminary tasks:
- Remove luggage compartment floor trim panel 51 47 101 Removing and Installing/Replacing Luggage Compartment Floor Trim Panel

- Remove luggage compartment trim on side panel on right Luggage Compartment Trim

- Disconnect battery negative lead Disconnecting and Connecting Battery Negative Lead

- Remove trim for instrument panel, bottom left 51 45 181 Removing and Installing/Replacing Bottom Right Trim For Instrument Panel

Unclip pin (1) from shock absorber (2).

Open rotary clips (1) and remove.
Remove cover (2) in direction of arrow.

Release screws (1).
Pull fuse holder (2) back slightly.

Disconnect plug connection (1).
Unlock catch (2) in direction of arrow and remove control unit for comfort access system (3) from device carrier (4).

Installation Note:
Make sure control unit (3) is correctly seated in device carrier (4).

Replacement:
Carry out programming/coding Programming and Relearning.

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.

Safety Warning

Keyless Start Control Module: Service and Repair

Use the Manual With the Right Hardware

When to See a Mechanic

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