BMW CAS Module Key Programming (2006-2012)
Lost every BMW key, or the car stopped recognizing the one you have? Ship your CAS module — we program a new working key. Covers CAS2, CAS3, CAS3+, CAS4, CAS4+ — on CAS3+ and CAS4+ ship the DME with the CAS, the new key's ISN is read from it.
Sending several modules? Add them all — one box, one return-shipping charge.
2006-2012 BMW with CAS2, CAS3, CAS3+, or CAS4 module
How It Works
Three simple steps. Hundreds of mail-in jobs completed for shops, locksmiths, and DIY pros.
Pay & Get Address
Click "Order Now", pay securely online. We email shipping address + instructions within minutes.
Ship Your Module
Pack per the instructions and ship to Arlington. USPS goes to our PO Box; UPS and FedEx must use the street address. Your prepaid inbound label arrives by email — shipping to us costs you nothing.
Get It Back Fast
Work typically completed within 24 hours of receipt. Ships back next business day at the return speed you chose at checkout — standard to overnight. Tracking emailed.
What You Get
- Cut + programmed BMW key with transponder
- CAS module returned with key paired
- All-keys-lost supported
- Typical 24-hour turnaround after CAS is received
- Return shipping your choice at checkout — standard, 2-day, or overnight
- 6-month warranty on programming work
Compatibility
Confirm your part matches one of the variants below before ordering. Not sure? Text us a photo and we'll verify.
CAS versions
- CAS2 — ship the CAS alone
- CAS3 — ship the CAS alone
- CAS3+ — ship the CAS AND the DME (the key's ISN is read from the DME)
- CAS4 — ship the CAS alone (include the DME if you cannot tell CAS4 from CAS4+)
- CAS4+ — ship the CAS AND the DME
BMW chassis
Service scenarios
Will This Fix My Problem?
Honest answer: here's exactly what this service fixes — and what it doesn't.
Fixes:
- All BMW keys lost (2006-2012)
- Used CAS module needs to be virginized to a new VIN
- Add a spare key without dealer visit
- Replacement CAS does not recognize existing keys
Won't fix:
- 2013+ BMWs with FEM/BDC system — see our FEM mail-in service
- Pre-2006 BMW (EWS system) — different process
- DME (engine computer) faults unrelated to key matching
Shipping Instructions
These details are also emailed to you the moment your payment clears.
We buy and email you a prepaid inbound label, so shipping it to us costs you nothing. Return shipping is selected and paid at checkout — Standard $29.95 (3–5 days), UPS 2-Day $54.95, or UPS overnight $94.95. The CAS module is usually behind the glovebox or under the steering column trim depending on chassis. CAS3+ and CAS4+: put the DME in the same box — the new key's ISN is read from it, and without it the job waits for a second shipment.
What to include in your box
- CAS3+ and CAS4+: the DME (engine computer) as well — the new key's ISN can only be read from the DME on those. Not sure which CAS you have? Text a photo of the CAS label first, or include the DME to be safe
- BMW CAS module
- A printed copy of your order confirmation email
- VIN of the BMW (for blade cut + verification)
- Your name, return address, and phone number
Ship to
Auto Module Lab
If shipping USPS
PO Box 120241
Arlington, TX 76012
If shipping UPS or FedEx
1009 Oakwood Ln # 120241
Arlington, TX 76012
Your prepaid inbound label (already addressed) arrives by email the moment you order; the return label is bought when your module reaches the bench and ships on the speed you chose at checkout.
Need to perform this job remotely?
Get an Auto Module Lab Remote Programming Kit and have our technicians program supported vehicles from your shop — the car stays on your lift and nothing gets posted.
Buy the interface once — program with us anytime. Supported procedures vary by vehicle, module, OEM software and security requirements.
Frequently Asked
Still have a question? Text us — replies in minutes.
Do I need to send the DME too?
Will my old keys still work?
What is the difference between CAS3 and CAS3+?
Can I just buy a used CAS and have you program it?
How fast is shipping back?
Related Services
Other bench services for the same brand or use case.
BMW FEM/BDC Key Programming
Lost the keys to your F-chassis BMW? Ship your FEM/BDC module AND DME — we program a new working key.
BMW DME EWS Delete (MS41/42/43/45, MSS50-70)
Swapped DME cranking but never firing? Plug-and-play EWS delete for BMW M52/M54/S54/S62/S65 DMEs — ship your DME, get it back IMMO-off and ready to run.
BMW FRM Footwell Module Repair
BMW FRM/FRM3 bricked or dead? Ship it in — we recover the EEPROM and restore full function.
Fault codes this service fixes
Seeing one of these on your scan tool? Here's what it means and how the bench fix clears it.
Engine Start Blocked by Immobilizer
P0513Incorrect Immobilizer Key
CAS-DME comm errorCAS module unable to authorize start
BMW DDE immobilizer faultBMW diesel DDE immobilizer authentication failure
All keys lostNo working key for a European vehicle
Used module pairing failureUsed donor module won't accept new VIN
P1602ECU/DME not properly coded to vehicle
P1614Immobilizer no program data received
CAS4/CAS4+ ISN mismatchBMW F/E-chassis CAS4 ISN doesn't match DME
BMW E9x CAS warning light stuckE90/E91/E92/E93 CAS warning indicator won't clear
BMW MINI Cooper CAS module faultMINI Cooper R-series CAS/EWS immobilizer fault
P1633Immobilizer power supply fault
Guides & tools for this fix
Deeper symptom walkthroughs and the programming tools behind this service.
Where we serve BMW CAS Module Key Programming (2006-2012)
Mail-in means nationwide — we accept modules from all 50 states and DC from our Arlington, Texas lab. See your state, metro, or specific vehicle:
All 50 states + DC
Ready to ship?
$150 flat, typical 24-hour turnaround. Pay now, get the shipping address by email, drop it in the mail. Your module is typically back on your bench within a week.