BMW FEM / CAS / FRM Repair in Dallas–Fort Worth
Mobile Service Across Dallas–Fort Worth
BMW’s key and body electronics run through three module families: CAS on the E-series, FEM and BDC on the F and G series, and the FRM footwell module for lighting. When one fails, the symptoms scatter — no-start, key not recognized, windows and lights misbehaving at once. We diagnose and program these modules at your location across DFW.
Quick Answer
As of July 2026, BMW FEM, CAS and FRM work in Dallas–Fort Worth runs $150–$450 for coding and recovery and $250–$700 for VIN-matched module replacement through our mobile service — E-series through G-series, at your location, without the dealer tow the symptoms usually trigger. Call (817) 813-8746 with your VIN for a firm all-in quote.
Typical DFW Pricing
| Service | Typical range | Notes |
|---|---|---|
| Module programming / configuration | $150–$450 | Existing unit, flashed to your VIN |
| Replacement or used module, VIN-matched | $250–$700 | Sourcing plus programming |
| Diagnostic visit | $95–$185 | Often credited toward the repair |
The FRM Failure Everyone Meets
E-series FRM failures are famously common — turn signals dead, interior lights stuck, windows offline, often right after a battery change or jump start. Many FRMs are recoverable without replacement; when one is truly gone, the replacement needs proper coding to the car.
How It Works
Call With Your VIN
Every module and security job is VIN-specific. Tell us the year, model and symptoms, and we confirm coverage and quote before anyone is dispatched.
Diagnose First, Then Fix
We confirm which module or system is actually at fault before selling you a repair — a large share of “failed module” calls turn out to be a credential, connector or configuration problem that costs far less.
Programmed, Tested, Done On Site
Programming happens at the vehicle with manufacturer-level software and stable voltage, followed by a full function test before we leave.
The Honest Boundary
The candid limit: BMW’s newest BDC-era platforms lock more functions behind factory-online sessions each year, and a specific late-model case can genuinely be dealer-only. We know which side of that line your VIN sits on before the van moves — and on the E and F series that make up most of the DFW fleet, the answer is almost always that we can do it.
Frequently Asked Questions
My BMW says key not recognized after a battery change — is the module dead?
Not necessarily — low-voltage events scramble more than they destroy. We diagnose whether the CAS/FEM needs recovery, coding or replacement before any parts are quoted.
Can you code a used FEM or CAS?
On most generations yes, matched to your vehicle with the key data rebuilt. Some newest platforms are more restrictive — we confirm against your VIN first.
Do I need the dealer for BMW module work?
For the majority of model years, no — this is exactly the specialist work we carry equipment for. When a specific case is genuinely dealer-only we say so on the phone.
Why did my BMW’s lights and windows go crazy after a dead battery?
The FRM footwell module corrupts during low-voltage events on E-series cars — a famous failure. Many corrupt FRMs are recoverable by direct reprogramming without buying a module; we attempt recovery before quoting replacement.
Comfort Access stopped while normal key start still works — what failed?
The proximity antenna path or its circuit in the FEM/BDC, not the key itself. Diagnosis isolates antenna, wiring or module so you replace one part instead of guessing through three.
Can you code a used CAS or FEM to my car with its existing keys?
On most E and F generations yes — module matched, key data rebuilt, your working keys re-registered. We confirm generation-specific rules from the VIN before you source anything.
Related: BMW key replacement · BMW key guide · ELV steering lock repair.
Call (817) 813-8746 — mobile across the whole Metroplex, one all-in quote before we roll.