BMW CAS Replacement
We are able to code and program a second hand CAS Car Access System to your vehicle, if your car is not starting and has been diagnosed as a CAS fault we are able to change the ISN on the replacement CAS to match the ECU/DME on your vehicle. Contact us today for a quote.
BMW CAS Replacement
We are able to program a second hand or a brand new CAS to your vehicle, if you've been told that you CAS is broke and that's the reason why your vehicle is not starting we are able to program you a second hand CAS, we can supply the unit but will require your current part number as we need to work with a unit with the same part number. If your CAS has no communication at all with a diagnostics tool we may have to code a new set of keys for the vehicle as well. If you still have communication with a diagnostics tool we maybe able to clone the unit so we can still use the old keys.
CAS2/3 Replacement
CAS2/3 Replacement
CAS2/3 can be found on BMW E series vehicles & Mini's
CAS4/4+
Can be found in BMW F series vehicles & Mini's
Reasons why your CAS may have failed
Under-Voltage During Crank: If a BMW battery drops below ~10V while trying to crank the engine, the sudden voltage dip can interrupt the CAS processor mid-read or mid-write. This corrupts the rolling code counter (EWS-DME sync) or wipes critical data inside the internal EEPROM (D-Flash). Reverse Polarity / Heavy Jump Starts: Connecting jump leads backward—or using high-amperage commercial boost chargers—causes voltage surges that blow internal protection diodes, transceivers, or regulator ICs directly on the CAS PCB.
Different BMW's we can provide our services for
E-Series (CAS1, CAS2, CAS3, CAS3+) 1 Series (E81/E87), 3 Series (E46/E90/E92), 5 Series (E60), 7 Series (E65), X5/X6 (E70/E71) Diamond Remote Keys, Slot Smart Keys F-Series (FEM / BDC / CAS4) 1 Series (F20), 2 Series (F22), 3 Series (F30), 4 Series (F32), 5 Series (F10), X3/X5 (F25/F15) Display/F-Style Smart Proximity Keys G-Series & Recent Models 3 Series (G20), 5 Series (G30), 7 Series (G11), X5 (G05) (Subject to ECU security levels) Display Keys & Modern Proximity Fobs
Why Choose BM Repairs for Replacement CAS
We only work on BMW vehicles and have a massive understanding of how the control units work on BMW's and the coding & programming processes. We are able to help on E series cars from 2004+ upwards when BMW added the ISN function to the CAS all the way onto F series BMW's. We are now able to provide the same services for some G series BMW's.
What areas do we offer our services for
London Streatham, Clapham, Croydon, Putney, Wimbledon, Wandsworth, Wembley, Chelsea, & Colliers wood etc Surrey Kingston, Epsom, Esher, Coulsdon, Redhill, Leatherhead, Cobham, Horley & Woking etc.
FAQ
Are you located near me?
Yes, provide a mobile service which means we come to you to carry out the work on site.
If got a brand new unit from BMW can you code the unit?
Yes we can code the unit to match your vehicles current ISN.
Are you able to reset the EGS ISN?
Yes, we can flash the gearbox to match the DME/ECU of the current vehicle.
If installed a second hand CAS are you able to help?
Yes we can help on a second hand CAS unit providing it's a matching part number.