Locked out at 11pm near Heathrow. They were with me in 25 minutes, no damage, cheaper than the dealer quoted. Genuine lifesavers.
James M.
Hounslow · Emergency Unlock
FBS3 · FBS4 BE-key · AMG · Sprinter ///
Mercedes All Keys Lost. From £395.
Mobile Mercedes AKL recovery — FBS3 and FBS4 BE-key. Across West London, Slough, Heathrow & Home Counties. No tow, no dealer wait, fixed price agreed up front.
30-min response
West London
Fully insured
Public & PI
Non-destructive
Industry standard
Dealer-level kit
AutoTuner · Autel
Fixed quotes
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Fixed price confirmed before we attend · No-damage entry · Dealer-grade key programming
No spam · No obligation · Fixed pricing confirmed before we attend
Professional. Mobile. Trusted.
Mercedes all-keys-lost is split across two immobiliser families. FBS3 (Flexible Bus System v3) covers W204 C-Class, W212 E-Class, W221 S-Class, W164/W166 ML, W251 R-Class, X204 GLK, Sprinter NCV3 and W639 Vito (roughly 2005-2014) — kerbside in 90-120 minutes. FBS4 BE-key (W205, W213, W222, W447 V-Class, W167 GLE, W464 G-Class, current Sprinter VS30, 2014+) requires online OEM authentication and bench-work on the EZS/EIS module — typically 2-3 hours kerbside. StageMyCar carries the full FBS3 and FBS4 AKL kit, plus older infrared and ISK-based systems for W203 / W211 / pre-2005 models.
- FBS3 — W204 / W212 / W221 / W164 / W251
- FBS4 BE-key — W205 / W213 / W222 / W447 / W167
- AMG — C63 / E63 / S63 / G63 / GT
- G-Class W463 / W463A (G63 / G500)
- V-Class W447, Vito, Sprinter NCV3 + VS30
- EQS / EQE / EQC EV proximity AKL
- EZS / EIS bench-read where required
- Mobile to your driveway, workplace or fleet depot
- From £395 — typically 50% under Mercedes dealer
Payment Assist · Official Partner
Spread the Cost with Payment Assist
On selected services over £250, you can split the total into 3 or 4 monthly payments with 0% APR available. A small deposit is paid on the day, then the remaining balance is collected in equal monthly instalments. No long forms, no waiting — applied on site before work begins.
- 0% APR available on selected services
- 3 or 4 equal monthly payments
- Deposit paid on the day
- Soft credit check — no impact at quote stage
- Decision in minutes, on site
- Available on jobs over £250
Finance subject to status and approval and provided by Payment Assist Ltd, authorised and regulated by the Financial Conduct Authority. 0% APR available on selected services. Terms, eligibility and final monthly figure confirmed at application. StageMyCar UK is an introducer appointed representative — we do not charge a fee for this service.
Example · Illustrative
£480 ECU Remap · 0% APR
3 payments
£120/mo
£120 deposit
4 payments
£96/mo
£96 deposit
Authorised & regulated by the FCA
Decision in minutes — apply on site
Subject to status & approval
Indicative example only. Final terms confirmed at application.
Frequently Asked Questions
Mercedes all keys lost — kerbside?+
Yes. FBS3 (W204, W212, W221, W164, W251, 2005-2014) and FBS4 (W205, W213, W222, W447, W167, W213.5, 2014+) all handled mobile with dealer-grade AKL kit. No tow.
How long does a Mercedes AKL take?+
FBS3 typically 90-120 minutes. FBS4 BE-key can take 2-3 hours including online OEM authentication. Fixed price agreed before we attend.
Will the lost key still work afterwards?+
No — the AKL procedure invalidates every previously-paired key (TPRoll/SK count incremented). Found keys will no longer start the car.
How much is a Mercedes AKL?+
From £395 for FBS3, from £495 for FBS4 BE-key. Always 40-60% less than Mercedes main dealer, plus saves the recovery tow.
AMG, G-Wagen, Sprinter — covered?+
Yes — full AMG range (C63, E63, S63, G63, GT), G-Class (W463/W463A), V-Class, Vito, Sprinter (NCV3 + VS30) all supported.
Can I pay in instalments?+
Yes — Payment Assist: 3 or 4 monthly instalments at 0% APR on jobs over £250. Subject to status.
★ 5.0 / 5 · 36 Google reviews
Trusted by drivers across West London
StageMyCar UK is a mobile auto locksmith and ECU specialist serving West London, the M4 corridor, Heathrow, Slough, Reading and surrounding areas. Fixed-price quotes, DBS-checked engineers, fully insured, 7 days a week. Call 07312 826380 for an instant quote.