BMW Car Key Exeter — Replacement, Programming & Lockout
Mobile BMW key specialist covering Exeter and Devon — HU92, HU100R, EWS, CAS module, FEM/BDC and Comfort Access. On-site, fixed price, 24 hours.
BMW key programming is among the most technically demanding in the automotive industry — and among the most expensive at main dealer rates. The CAS module on E-series cars, the FEM/BDC on F-series, the EWS immobiliser on older models and Comfort Access on G-series all require specialist equipment. From an E90 3 Series CAS fault to an F30 FEM issue or an X5 smart key problem — we carry BMW-specific diagnostic equipment to resolve it at your vehicle, at a fraction of the dealer cost.
BMW Models We Cover in Exeter
Key types and programming systems vary across BMW’s range. Every model below is covered across Exeter and Devon.
Don't see your BMW? Call 01392 925673
The models above cover our most frequent BMW jobs across Exeter and Devon. We cover every BMW model sold in the UK — all variants and older discontinued models.
BMW Key Systems — What You Need to Know
BMW has used three distinct immobiliser architectures — EWS, CAS and FEM/BDC — each requiring different diagnostic equipment and programming methods. The system your BMW uses depends entirely on the model generation.
BMW immobiliser systems — EWS, CAS and FEM
BMW's immobiliser architecture has changed across three generations. Each uses a different module, communication protocol and programming tools. Attempting to programme without the correct generation-specific equipment will fail and in some cases can trigger a module lockout. We identify your BMW's system before any work begins.
BMW immobiliser generation timeline
No immobiliser
EWS3 / EWS4 — E-series older gen
CAS (Car Access System)
FEM / BDC — F-series
BDC2 / Comfort Access — G-series
Key profiles we carry for BMW
- HU58 — classic BMW blade on pre-EWS and early EWS models (E28, E30, E36 era).
- HU92 — all CAS-equipped E-series: E87, E90/91/92, E60/61, E70 X5, E89 Z4. Most common BMW blade in our Devon workload.
- HU100R — F-series and G-series: F20/21, F30/31, F10/11, F15 X5, all G-series. Current-generation BMW blade.
- Comfort Access — passive entry, push-button start on higher F-series and all G-series. Requires BMW-specific seed/token OBD.
⚠ BMW CAS and FEM modules can trigger a lockout after repeated failed programming attempts. Call us before trying any DIY method.
The DVLA registration is used to verify ownership before all-keys-lost work.
CAS: E87, E90/92, E60, E70 — HU92 blade, CAS OBD
FEM / BDC: F20, F30, F10, F15 — HU100R, FEM OBD
BDC2 / Comfort Access: G20, G30, G05 — smart key, G-series OBD
BMW key replacement at main dealer rates is among the most expensive of any brand. We use the same professional diagnostic equipment at significantly lower rates. Pricing varies by immobiliser generation.
- › EWS key (E36, E46 era)
- › CAS HU92 key (E87, E90, E60, X5 E70)
- › FEM HU100R key (F20, F30, F10)
- › Comfort Access / smart key (G-series)
Call 01392 925673 with your BMW model and year. Fixed quote before we travel. No call-out fee.
Common BMW Key Problems We Fix in Exeter
The most frequent BMW key faults we attend across Exeter, Devon and Somerset.
How We Programme BMW Keys On-Site
BMW key programming is generation-specific. Here is what happens when you call us for a BMW key in Exeter or Devon.
ⓘ BMW CAS and FEM modules can lock after failed programming. We confirm the correct protocol before starting. For all-keys-lost, ownership verification is required.
BMW Services Available in Exeter
Every service available for all BMW models across Exeter, Devon and Somerset.
Frequently Asked Questions — BMW Car Keys Exeter
How much does a BMW car key replacement cost in Exeter?
BMW key pricing varies significantly by immobiliser generation. EWS-era keys are the most straightforward. CAS keys (E87, E90, E60) are more involved. FEM/BDC (F-series) and G-series Comfort Access require the most complex programming. We provide a fixed all-in price before travelling — always significantly less than BMW dealer rates. No call-out fee. Call 01392 925673 with your BMW model and year.
What is the difference between BMW EWS, CAS and FEM?
EWS is used on E36, E46 and E38/E39 era vehicles. CAS replaced EWS on E87, E90 and E60 from approximately 2003. FEM replaced CAS on F-series from 2011 — F20, F30, F10, F15. G-series (2019+) uses BDC2. Each generation requires completely different diagnostic equipment and programming protocol.
My BMW won't start after a battery change — is that a key problem?
Frequently a CAS or FEM sync issue, not a key failure. The module has lost the key's stored credential. We diagnose and restore the sync via OBD at your vehicle. In most cases no new key is needed. Call us before ordering a replacement or having the car recovered to a dealer.
Can you programme a BMW key without the original?
Yes — all-keys-lost is available for all BMW generations using EWS, CAS, FEM/BDC and G-series systems. Each requires a specific OBD protocol and in some cases PIN extraction from the module. We carry the BMW diagnostic equipment required for all generations including MINI.
Do you cover BMW Comfort Access smart key systems?
Yes — BMW Comfort Access on higher-spec F-series and all G-series is within our capability. Programming uses BMW G-series OBD seed/token protocol. The most common Comfort Access fault is a depleted smart key battery — we diagnose root cause before recommending replacement.
Do you cover MINI as well as BMW?
Yes — MINI shares BMW's architecture throughout. R50/R52/R53 use EWS4. R56/R60 use CAS. F56/F60 and F54 Clubman use FEM/BDC. All generations are covered using the same BMW diagnostic equipment.
Is a BMW replacement key from you as good as a BMW dealer key?
Yes — the credential programmed to your BMW's CAS, FEM or BDC module is identical whether programmed by us or a BMW dealer. Both use BMW OBD protocol. The physical HU92 or HU100R blank is from the same professional supply chain. The difference is cost and on-site convenience.
How long does BMW key programming take?
EWS key (E46, E36): 30–50 minutes. CAS key (E90, E60): 45–70 minutes. FEM/BDC key (F-series): 50–75 minutes. G-series Comfort Access: 60–80 minutes. All-keys-lost: 75–120 minutes. Accurate estimates confirmed on the call before travelling.
BMW Key Services Across Exeter & Devon
Other Car Brands
Need a BMW Key in Exeter or Devon?
Tell us your BMW model and year when you call. We identify the immobiliser generation, confirm the key type and give you a fixed price — before we travel. No call-out fee, available 24 hours.