Mobile diagnosis · Same-day fix · Dealer-grade kit
Key Not Detected. From £150.
Dashboard saying 'key not detected' or 'no key in vehicle'? We diagnose flat fobs, desynced rolling codes, faulty antenna rings and immobiliser faults kerbside quickly, subject to technician availability and traffic.
Mobile from Staines (TW18) · Normal hours 08:00–20:00 · Fixed price agreed first
Locked out or lost your keys? We come to you
Typical arrival 30–45 minutes, subject to location and trafficStaines, West London & Surrey
Normal hours 08:00–20:00 · Non-destructive entry where possible · Fully mobile service
How we handle mobile diagnosis · same-day fix · dealer-grade kit
A 'key not detected' or 'no key in vehicle' warning has four common root causes: a flat fob battery (especially on cars left for 2+ weeks), a desynced rolling code (common after a flat fob or jump-start), a faulty antenna ring (around the ignition barrel on traditional cars, or behind the dashboard on keyless), or an immobiliser ECU fault (BMW CAS/FEM/BDC, Mercedes FBS3, Audi/VW MQB48, JLR RFA). StageMyCar diagnoses all four kerbside using dealer-grade Xtool X100 Pad Elite and AVDI equipment — typical 20–45 minute diagnostic, same-day fix in 95%+ of cases, no tow. Across West London, Heathrow, Slough, Hounslow, Uxbridge, Hayes, Staines, Reading and the Home Counties.
- Minimum diagnostic visit £150 — fault confirmed before any spend
- Flat fob battery + rolling-code resync From £150
- Antenna ring / keyless aerial coil from £150
- Immobiliser ECU diagnosis & coding from £180
- Full key replacement from £180 (if chip has failed)
- Dealer-grade kit — Xtool, AVDI
- Mobile — same-day on your driveway
- BMW / Mercedes / Audi / VW / Ford / JLR specialists
- 12-month warranty · fully insured
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- 0% APR available on selected services
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- Available on jobs over £250
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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.