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.
66 20 508 Removing and Installing (Replacing) Control Unit (Park Distance Control)
Necessary preliminary tasks:
- Remove flap in right luggage compartment wheel arch trim. See 51 47 172 REMOVING AND INSTALLING/REPLACING FLAP IN LUGGAGE COMPARTMENT TRIM, LEFT OR RIGHT
Disconnect plug connections (1).
Unlock catch (2) in direction of arrow and pull out control unit (3) towards top.
Replacement:
Using BMW scan tool, carry out coding/programming.
Observe following IDC specifications:
- Programming
- Coding
- Car & Key Memory
- CD "CIP"
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.