Pre-2015 FBS3 · IR Key · Smart Key
Mercedes Key Replacement. From £220.
Pre-2015 FBS3 Mercedes key replacement — mobile across West London, Slough, Heathrow & Home Counties. Post-2014 FBS4 is dealer-only; we don't take those jobs.
Mobile from Staines (TW18) · Normal hours 08:00–20:00 · Fixed price agreed first
How we handle pre-2015 fbs3 · ir key · smart key
Mercedes-Benz keys split into two generations: FBS3 (used up to roughly 2014/15) and FBS4 (introduced from 2014/15 onwards). We only cover pre-2015 FBS3 vehicles — W203 C-class, W211 E-class, W164 ML, W221 S-class, W251 R-class, W639 Vito, W906 Sprinter, plus early W204/W212 built before the FBS4 switch. FBS3 is one of the most secure key systems on the road — dealer pricing routinely exceeds £600 — but a properly equipped mobile specialist can still program a replacement on site. Post-2014 FBS4 platforms (most W205, W213, W222, W447, W167, W907, EQ EV and current AMG) must go to the main dealer; we don't quote for them.
- Pre-2015 FBS3 IR keys — W211 / W164 / W203 / W639 Vito
- W906 Sprinter & W639 Vito commercial keys
- W204 / W212 / W221 pre-2015 FBS3 only
- All-keys-lost recovery (FBS3 same day / same week)
- Spare key on site in 60 minutes
- Mobile to driveway, workplace, hotel
- From £220 — typically 50-60% less than main dealer
- Post-2014 FBS4 dealer-only — we don't quote
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.
Indicative example only. Final terms confirmed at application.
Frequently Asked Questions
How much is a mercedes key replacement?+
Our mercedes key replacement service starts from £220. Final price depends on exact model, year and key type — fixed price always quoted before work begins. Typically well below main-dealer prices.
Do you come to me?+
Yes — fully mobile across West London, Slough, Heathrow, Uxbridge, Hayes, Hounslow, Wembley, Richmond and surrounding areas. Driveway, workplace, hotel — we attend.
How long does it take?+
Most mercedes key replacement jobs are completed on site quickly, subject to technician availability and traffic. Some newer security-gated models may need a second visit — we'll tell you up front before booking.
Will it affect my car's warranty?+
No — programming a key or remapping an ECU does not invalidate manufacturer warranty for unrelated components. We can also revert any ECU work back to factory free of charge before any dealer visit.
Is the work guaranteed?+
Yes — 12-month parts and labour warranty. Fully insured, fully insured, dealer-grade equipment.
Can I pay in instalments?+
Yes — Payment Assist available on jobs over £250: 3 or 4 monthly instalments, 0% APR on selected services. Subject to status.
Ready to Book?
Registration and postcode are enough for a fixed quote. Mobile from Staines across West London.
StageMyCar is a mobile auto locksmith and ECU specialist based in Staines (TW18), working across West London, Surrey and Berkshire. Normal hours 08:00–20:00, fixed price agreed before we start. Call 07312 826380 for a quote.