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Car Won't Start? We Diagnose & Fix

Immobiliser
Diagnostics

24/7 Service — We Come to You — No Call-out Fee

Car won't start even though you have the key? It could be an immobiliser or transponder fault. We carry professional diagnostic equipment and come to you — no tow truck, no dealer wait.

24/7Emergency Service
30 minAvg Response
£0Call-out Fee
★ 5.0Google Rating

What's Included

Modern vehicle immobilisers prevent the engine starting unless the correct transponder key is recognised. When this system develops a fault, you can be stranded even with the right key in your hand. We carry the diagnostic tooling to identify and resolve most immobiliser and transponder issues on-site.

Immobiliser Fault Diagnosis

We read fault codes from your vehicle's immobiliser system and identify the root cause — whether it's the key, the ECU or the antenna ring.

Transponder Re-sync

If your key's transponder has lost its pairing with the vehicle, we can re-sync it without replacing the key.

ECU Diagnostics

We can read and diagnose ECU-related immobiliser issues for most vehicles — and advise on next steps if ECU replacement or remapping is needed.

Key Fob Fault

Sometimes the issue is a faulty key fob or dead transponder chip rather than the car itself. We test both quickly.

We Come to You

You don't need to arrange a tow. We come to your location with everything we need to diagnose on-site.

All Makes & Models

We carry equipment covering virtually every major manufacturer's immobiliser system — European, Asian and American.

Professional, Trusted Service

We're not a national call centre. When you call, a real person answers and we're on our way.

30-Min Response

Average 30-minute response across Daventry, Northampton, Milton Keynes and surrounding areas.

No Call-out Fee

Zero call-out charge — you only pay for the work done, quoted upfront before we begin.

24/7, 365 Days

Day or night, weekday or bank holiday — a real person always answers. No voicemail.

Fully Insured

Fully insured, professionally trained and qualified. Your vehicle is in safe, expert hands throughout.

★★★★★ on Google

Rated 5.0/5 with 27 verified reviews from real customers across the Midlands.

Cheaper Than a Dealer

Professional-grade work at a fraction of main dealer prices. We'll always be honest about cost.

Areas We Cover

We provide immobiliser diagnostics across a wide area of the Midlands. Click your town for local information.

Immobiliser Diagnostics FAQ

Possibly. A common symptom of an immobiliser fault is the engine cranking (turning over) but not firing. You may also see an immobiliser warning light on the dashboard. Call us and we'll talk through the symptoms.
Often yes — many immobiliser faults are in the key or the antenna ring rather than the ECU itself, and these are straightforward to resolve. We'll always diagnose before recommending any replacement.
We'll tell you honestly what we've found. If it's beyond our scope (e.g. a mechanical fuel or ignition fault) we'll say so clearly rather than take your money for work we can't complete.
A standard diagnostic visit takes 30–60 minutes. If repair work is also needed it may take longer — we'll advise on the phone.
We cover the vast majority of common makes — Ford, Vauxhall, BMW, Mercedes, VW, Audi, Toyota, Peugeot, Renault, Nissan and more. Call us with your make and model to confirm.

Need Immobiliser Diagnostics?

Call now — a real person answers 24/7, no voicemail, no wait.

07783 940506

Available 24/7 — no answerphone, a real person always answers.

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