A5
| Designation of components of immobilizer V |
| Component | Abbreviations used in Guided Fault Finding | K-module number Diagnostic address | Comments |
| Engine control unit -J623- | MSG1/ECU1 (engine control unit 1) | K01 01 - Engine electronics | Engine control unit 1 is an active component of the immobilizer and must be adapted after renewal. Communication is routed via drive train data bus. |
| Convenience system central control unit -J393- | IMS (immobilizer control unit, corresponding to immobilizer master) | K05 05 - Entry and start authorisation | The BCM2 incorporates diagnostic addresses 05 - Entry and start authorisation and 46 - Convenience system central module; therefore both K-module numbers (K05 and K46) exist. The immobilizer and component protection functions are implemented via address 05 - Entry and start authorisation and must be adapted when renewing the BCM2. Communication is routed via the convenience system data bus. |
| BCM2 (body control module 2) | K46 46 - Convenience system central module | ||
| Entry and start authorisation switch -E415- | Ignition lock | - | Electronic ignition lock connected via LIN bus to BCM2. When renewing ignition lock, it need not be adapted, as it merely forwards information for the immobilizer from the key. |
| Electronic steering column lock control unit -J764- | ELV/ESL (electronic steering column lock) | KG1 05 - Entry and start authorisation | The electronic steering column lock is connected to the BCM2 via the same LIN bus as the ignition lock; therefore, it has no separate diagnostic address; however, it does have to be adapted to the immobilizer after being renewed. Diagnosis is performed via address 05 - Entry and start authorisation. The electronic steering column lock can be renewed as a separate unit without having to remove the steering column. |
| Engine control unit 2 -J624- | MSG2/ECU2 (engine control unit 2) | K11 11 - Engine electronics 2 | Engine control unit 2 is an active component of the immobilizer and must be adapted after renewal. Engine control unit 2 is fitted optionally and depends on the engine code letters. Communication is routed via drive train data bus. |
| Automatic gearbox control unit -J217- | GSG/GCU (gearbox control unit) | K02 02 - Gearbox electronics | The gearbox control unit is an active component of the immobilizer and must be adapted after renewal. The gearbox control unit is fitted optionally. Communication is routed via the drive train data bus. |
| Data bus diagnostic interface -J533- | Gateway | K19 19 - Data bus diagnostic interface | The gateway is a passive component of the immobilizer and does not have to be adapted after being renewed. The gateway serves as a router from the convenience data bus to the drive train data bus. |
| Vehicle key -KD5708- | Key | - | The vehicle keys are active components of the immobilizer and must be adapted (matched) after being renewed. Between 0 and 8 keys can be adapted. |
