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.
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HOMESERVICE MANUALSBMW2006X3 (E83) (CANADA) L6-2.5L (M54)REPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - ACCESSORIES AND OPTIONAL EQUIPMENTCOMMUNICATIONS CONTROL MODULESERVICE AND REPAIR
2006 BMW X3 (E83) (CANADA) L6-2.5L (M54)
Communications Control Module: Service and Repair
2006 BMW X3 (E83) (CANADA) L6-2.5L (M54)SECTION Service and Repair
84 11 650 - Removing and installing/replacing telematic control unit (TCU) (option SA633/SA638/SA639)
Important!
Replacement with option SA638:
- Carry out programming/coding Programming and Relearning
Replacement with option SA633/SA639:
- Carry out programming/coding Programming and Relearning
- Via Diagnosis and Information System (DIS):
- Service functions
- Start subsequent assessment
Replacement with option SA633/SA638/SA639:
- If necessary, carry out coupling procedure
- Remove sticker (Bluetooth passkey) from front of TCU and stick to Service Booklet insert
Important!
Read and comply with notes on protection against electrostatic damage (ESD protection) 61 35 ... Notes on ESD Protection (Electro Static Discharge).
Necessary preliminary tasks:
- Disconnect battery negative lead Disconnecting and Connecting Battery Negative Lead
- Remove luggage compartment wheel arch trim on left
Disconnect antenna plug (1).
Disconnect plug connection (3).
Release nuts (4) and remove TCU (2).
Installation Note:
Observe color coding of aerial/antenna plugs (1).
RENDER: 1.0x
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.