BMW CAS3 Immobiliser Module Repair
BMW CAS3 (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.
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 CAS3 Immobiliser module
As mentioned above, some of the issues that you may encounter if you have a problem with your BMW CAS3 module are:
- Immobiliser Fault Codes
- No Communication with CAS3 Module
- Vehicle Won’t Start
- Key Not Recognised
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.
CAS3 Immobiliser Module Repairs – By Sinspeed
Here at Sinspeed, we’re able to fully test and repair the BMW CAS3 immobiliser module using new genuine OEM components and uprated components where possible to ensure each and every repaired BMW 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 CAS3 Immobiliser fault, give us a call today on 0203 815 9441.
We have a BMW E91 that cranks but no start. For a while the fuse for the remote locking kept blowing until we only used the physical key to open the car. The car recognises the key as it shuts off the alarm but the car only cranks without starting. We have plugged in the car as i thought it might be a sync error as the battery went bad, but we could not sync the cas/dde as it would not allow communication. I have checked the pcb in the CAS and nothing seems out of place (Diode was not blown etc). But, still have the same situation. Can you help with this I.E. check the DDE and CAS? Thanks.
Hi we have a bmw x5 E70 that is showing faults that the cas is not communicating with the gear box or transfer box. the vehicle engages the starter motor momentarily, but not long enough to start the vehicle. if we put a live to the starter motor it will start and run is this something yo think you can fix?
regards
dave
Hi. I’m having trouble with a cuatomers r56 mini cooper s and the red steering lock issue. All the usualthings have been checked and good. Battery, alternator, steering lock. It even has a bypass module fitted. Intermittent red light still popping up. Permanent fault codes in cas module are A0B5 (Road speed signal fault) and A118 (Road speed signal implausible). The codes clear after an elv reset but come straight back after 30 seconds. Eventually it will log fault code A0AA (control module fault) and will lock out the ignition hence no start. Any ideas how to proceed. Thanks
Hi it appears that i have a faulty CAS 2 unit. Is this something you could repair if so how much am i looking at to repair it?
Hi On our BMW 118D the key starts the car without a problem but the remote will not open the door. BMW has replaced the Receiver which worked for 3 to 4 days but stopped working again. could it be the CAS unit and if so what would the cost be for the repair.
John
Hi I have a BMW x5 2009 E70. This car was good, but after a week of not starting the battery was empty and the car was tried to start running and everything works but engine does not work. Seems like it’s not getting fuel. Tried to read the car via OBD, but reading is also not possible. All fuses checked and is good. What is the cost from this repair,?
Please advice stef l
Hi I have a used CAS 3 unit that I purchased on ebay for my BMW E90 2006/7 model.
No one here seems to know how to program the CAS with my chassis number vs the old vehicle number. Can you assist?
Regards,
Derrick
Hi, How much To diagnose the cas, becas the steering locked, we had to Remove the locking mechanism as The ignition does not come on. Non start issue.
Thanks.
Hi, presently I have a cas3 with the following fault codes:
00A114 CAS: Line fault, el. steering lock
00A103 CAS: Immobilizer bus fault
00A116 CAS: Critical status, el. steering lock
00C91E No message (terminal status, 0x130), receiver JBE, transmitter CAS
How much would it cost to repair the module ?
Hi i need cas 3 module repairing as mine wont realease the steering lock and on the odd occa it does car will not start how much does this cost ? Thanks kris
I need a Cas3 Repairing as there’s no ignition and the steering lock won’t release part No.6943830-01
Hello,
I am reaching out to you from the us. I have a bunch of fault codes for my cAS on an e93. How much would i be looking at if I was able to send you my cAS?
Best,
Harry A.
Hi
How much does it cost to repair. Car Details: e90 250i 2005, petrol, manual.
thanks.
Hi,
I have a CAS3 unit from a 2013 mini countryman diesel which has a burnt out component on the PCB is this something you can repair?
regards
peter.
Hi, Could you give me a quo for a CAS repair on mini cooper s r56 2007. Thanks
We’re are you based and how much long and price for cas2 e90 moduel repair ? Thanks marc
Could you give me a rough idea of the cost of Repairing a cas unit from a BMW mini Cooper S on a 09 plate.
Please send my price information for e90 bmw cAS3 repair. do you ship to germany?
BMW e90 320d CAS unit needs repaired how much will it cost thanks
can you please quote me to repair a cAS unit for a 2008 bmw 116i ……?
Can you please give me a quote yo tepair my cas module.it is a 2007 car 335xi
hi could you give me the cost to repair cas module on 2010 bmw e90 320i
Hi could give me a price to repair and cas 3 module on 2007 BMW E61 525D
how much to repair
Hi
I have a 2007 118d which seems like a cas problem.
What do u charge
Thanks
I was using sss v32 to re code aux line but the software said i need to do a up date on some Ecus .a plan was adviss .i run the up dates and it started on cas and then stop i ran It agan but no luck i have No dash lights or power on key .and No remote looking can you help me
Hi i have A bmw 530d e60 2004 i would like a price on repair of my cas module
My bmw 1 series 13 plate has A Main car access intetnal failure wil this b covered under warranty or not coz my car give me no warning wats so ever. It’s taken bmw 3 days to find this fault on my car. Wen i think The bmw warranity shud cover this the cars only Done 51000
Hello could you give me a price fir repair of CAS unit for 2011 318d please. Thanks. Lee
Hi could give me a price to repair/replace cas module on BMW 2004 530i?
Please can you send me a price List for BMW cas 3 Module repair / Reprogramming. Many thanks for your help. Julian.
Hi could give me a price to repair and cas module on 2004 e61 2.5i
Hi could give me a price to repair and cas module on 2004 e61 2.5i
Friend.
I need to repair my BMW 530i e60/2007 CAS 3 burned you have to help me?
Await response.
Friend.
I need to repair my BMW 530i e60/2007 CAS 3 burned you have to help me?
Await response.
Hi. My BMW e91 2005 has problem after upgrade cas. Upgrade was unsuccessful. Engine start but opening closing won’t work, on speedo flashing all warning. Yellow steering wheel flashing with paddle Lock. NNow there is no communication with car. I need update cas asap. Thnx
Hi. My BMW e91 2005 has problem after upgrade cas. Upgrade was unsuccessful. Engine start but opening closing won’t work, on speedo flashing all warning. Yellow steering wheel flashing with paddle Lock. NNow there is no communication with car. I need update cas asap. Thnx