BMW CAS Immobiliser Module Repair
BMW CAS (Car Access System) Immobiliser ECU Repairs
Are you having ignition problems? Does your BMW vehicle not start? If so, this could be due to an issue with your CAS immobiliser module. Does your BMW vehicle not start? If so, this could be due to an issue with your CAS immobiliser module.
The CAS immobiliser module (transponder box) serves as an antitheft alarm system and enables the start of BMW vehicles. Within each vehicle key there is an integrated transponder chip, and a coil ring which is fitted around the ignition lock. The transponder chip is powered by this coil from the CAS module, meaning that no battery is necessary within the key. When your key is inserted in to the ignition, the transponder in the key is powered via the loop antenna, and key data is sent to the CAS control module. If the key data is correct, an enable signal is then sent to the starter and the CAS module then sends the random code to the Engine Control Module (DME / DDE) where the random code is checked against the saved random code. Only if they match, is the fuel injection released allowing the car to start.
Common faults associated with the BMW CAS Immobiliser module
As mentioned above, some of the issues that you may encounter if you have a problem with your BMW CAS module are:
- Immobiliser Fault Codes
- No Communication with CAS Module
- Vehicle Won’t Start
- Key Not Recognised
- Failed CAS after key programming
Most workshops will advise to replace the immobiliser module because they are unable to repair it.
CAS Immobiliser Module Repairs
Here at BMW Specialist Nottingham, we’re able to fully test and repair the BMW CAS immobiliser module. All remanufactured units are returned with a Lifetime warranty and will not require programming. PLUG & PLAY.
If you have a BMW CAS Immobiliser fault, give BMW Specialist Nottingham a call today on 0115 9505010.