The CAS3 immobiliser module (transponder box) is found fitted to BMW vehicles and is known for common faults like not allowing the vehicle to start. The CAS3 module can be a very expensive part to replace and will need programming to get it working. A common location for the immobiliser box is behind the pocket on the drivers side.
If you’re reading this page it’s most likely because you suspect a fault with your BMW 5 Series immobiliser module and are probably aware how expensive this part can be to replace. Most workshops will advise to replace the immobiliser module because they are unable to repair it. It’s not possible to replace them with a second hand part because the unit will be locked to the vehicle it came from and unless you’re buying a complete immobiliser kit, you will require a new CAS3 module and the unit must be programmed.
Common faults associated with the CAS3 Immobiliser module include:
BMW 5 Series CAS3 Immobiliser Module Repairs – By Sinspeed
We’re able to fully test and repair the CAS3 immobiliser module and using new genuine OEM components and uprated components where possible to ensure each and every repaired CAS3 ECU is rebuilt to meet & exceed OE specifications. All remanufactured units are returned with a Lifetime warranty and will not require programming.
If you have a BMW 5 Series with a CAS3 Immobiliser fault, give us a call today.
Ajaz is a seasoned automotive electronics engineer with deep expertise in remanufacturing vehicle electronics. He has developed skills in all areas of the automotive field, from rebuilding hydraulic steering components, and mechanical gearboxes and reworking intricate vehicle electronics. Ajaz also acquired Bodyteq, a London-based vehicle bodyshop where he has developed extensive knowledge in automotive refinishing.
Alongside his automotive career, Ajaz has built a career in the IT industry, gaining accredited certification as an AWS Certified Cloud Practitioner, Cloud Architect, and Search Engine Optimisation (SEO) specialist.
