BMW FEM / CAS / FRM Repair in Dallas
FEM, CAS, FRM programming, replacement & virgin coding with ISTA.
BMW's FEM, CAS, and FRM modules are the backbone of key recognition, body control, and lighting. When they fail, effects range from lighting issues to complete no-start. We specialize in diagnosing, repairing, and replacing these modules on-site using BMW ISTA.
FEM (Front Electronic Module)
The FEM manages key recognition, lighting, wipers, windows, central locking, and comfort access in F/G-series BMWs. Failures caused by water ingress, electrical surges, or software corruption produce symptoms from warning lights to no-start. We program virgin FEM modules on-site including key data transfer, option coding, and calibration.
CAS (Car Access System)
Found in E-series BMWs, CAS handles key recognition and start authorization. Failures cause 'Key Invalid' or no engine start. Replacement requires ISTA programming with VIN writing, key data, and ISN sync with DME.
FRM (Footwell Module)
Manages lighting in E-series BMWs. Extremely common failures cause non-functional turn signals, lights stuck on, tail light issues, window problems. We often repair the existing FRM (failed board components) saving significant cost vs. replacement.
Used Module Virgin Coding
We source quality used modules, reset to virgin state, and program to your vehicle via ISTA — saving 50-70% vs. new dealer modules. Includes VIN writing, key data, option coding, and full calibration.
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Same-day mobile service across Dallas & DFW. Call or text us now.
Frequently Asked Questions
FEM replacement with programming: $600-$1,200 — significantly less than dealer pricing.
Yes. We reset used CAS modules to virgin and reprogram including key data and DME sync.
Turn signals not working, interior lights stuck, tail light issues, window problems, mirror folding failures.
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Mobile service across Dallas & DFW. Dealer-level tools. No guesswork.