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
Key not detected ///
Key Not Detected Fix
Immobiliser, antenna and ECU coding faults solved on-site.
30-min response
West London
Fully insured
Public & PI
MLA-approved
Non-destructive
Dealer-level kit
AutoTuner · Autel
Fixed quotes
Before we attend
Professional. Mobile. Trusted.
Immobiliser, antenna and ECU coding faults solved on-site. Our mobile team operates across West London 7 days a week with dealer-level equipment and fully reversible procedures.
- All makes & models supported
- Mobile service — we come to you
- Fully insured engineers
- Transparent fixed pricing
- Fast response across West London
On-Site Key Programming
Real Key Coding & Immobiliser Jobs
Dealer-level coding kit used on real customer cars — smart keys, transponders and immobilisers.
Citroen — module coding with OTOFIX
BMW smart key programming
Immobiliser fault diagnosed & cleared
← Swipe to see more real jobs →
Common Symptoms
- 'Key not detected' on the dashboard
- Push-button start does nothing
- Engine cranks but won't fire
- Intermittent — works sometimes, fails others
What Causes It
- Faulty transponder chip in the key
- Antenna ring around the ignition has failed
- ECU / BCM coding has been lost
- Dead fob battery masking deeper fault
Our Process
How We Fix It
01
Scan
Dealer-level diagnostic scan to read immobiliser fault codes.
02
Test
We test the key, antenna ring and ECU communication.
03
Repair
Antenna, transponder or coding repaired on-site.
04
Verify
Full start/stop test before we leave.
Why Choose This
Real Benefits
No need to tow to the main dealer
Repair often costs a fraction of dealer pricing
Same-day mobile diagnosis
Real-World Scenarios
BMW 1 Series in Uxbridge — random 'Key not in vehicle' message. Traced to a failed CAS antenna ring; repaired the same day.
Audi A6 in Harrow — would start one in five attempts. Re-coded transponder solved it on the driveway.
Mercedes C-Class in Slough — no start after a battery change. Re-synced FBS module roadside.
Vehicle Brands We Cover
BMWAudiMercedes-BenzVWFordVauxhallToyotaNissanRenaultPeugeotCitroenLand RoverRange RoverMiniHondaHyundaiKiaMazdaSEATSkoda
Transparent Pricing
Prices Starting From
No hidden fees. Fixed quote before we attend. Mobile across West London & surrounding areas.
Frequently Asked Questions
Why does my car say 'key not detected'?+
Usually it's a failed antenna ring, weak transponder, low fob battery or an immobiliser coding issue. We diagnose and fix all four on-site.
Are you a real auto locksmith near me?+
Yes — we are a fully mobile automotive locksmith covering West London, Slough, Heathrow, Uxbridge, Harrow, Wembley, Hayes, Southall, Reading, Hounslow, Staines and Windsor with a 30-minute average response.
How much does mobile car key replacement cost?+
Replacement car keys start from £180 cut and programmed on-site — typically 40–60% cheaper than the main dealer. Spare car keys start from £120.
Do you cover all car makes and models?+
Yes — BMW, Audi, Mercedes, VW, Ford, Vauxhall, Toyota, Nissan, Renault, Peugeot, Land Rover, Mini and most modern smart-key systems.
Will my car be damaged?+
No. We use non-destructive entry tools approved by the MLA — no broken windows, no damaged locks, no paintwork issues.
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.
★ 4.9 / 5 · 127+ Google reviews