// What fails
Most expensive repair mistakes start with a guess. Our mobile diagnostic service brings main-dealer-level diagnostic tooling to your car across London and the South East, reading every control module — engine, gearbox, body, ABS, ignition — and tracing the fault to its source rather than its symptom.
You get a plain-English explanation of what has actually failed, what it will take to fix, and an honest recommendation — whether that is a module repair with us, a wiring fix, or something your local garage can handle once the guesswork is removed.
Symptoms we see every week
- Warning lights and fault codes nobody has managed to explain
- Intermittent electrical faults that vanish at the garage
- A car that will not start, with no obvious cause
- Parts already replaced but the fault keeps returning
- Pre-purchase or pre-repair second opinion needed
Our process
- DiagnoseThe fault is confirmed with proper diagnostics and board inspection before any work is quoted.
- RepairComponent-level repair on your original unit — coding, keys and adaptations preserved.
- Bench testThe repaired unit is proven on the bench under realistic conditions before it goes back.
- WarrantyWork is covered by our workshop warranty, with terms confirmed in writing on your quote.
The same diagnose-first discipline applies on the driveway as on the bench: full-system scan, live data and wiring checks where needed, then a clear written outcome — fault, cause, recommended fix and price where we can quote it.
Pricing
Mobile diagnostic visits start from £90 depending on location. Prefer to talk it through first? One hour of professional phone support with John is £120 — often enough to solve the problem or save a wasted parts bill.
Frequently asked questions
What areas do you cover?
Mobile visits run across London and the South East from our Basingstoke base. Call or WhatsApp 07404 487674 with your postcode and we will confirm coverage and price.
What does the £90 mobile diagnostic include?
A full-system scan with dealer-level tooling, live-data investigation of the fault, and a plain-English verdict on what has failed and what fixing it involves. The price starts from £90 and can vary with location.
How does the 1-hour phone support work?
You book an hour with John — around 20 years an auto electrician — for £120. Ideal for DIYers and garages who want expert direction: what to test, what the readings mean, and whether a module needs to come to the bench.
What happens if you find a faulty module?
You get options, not pressure: repair with us (the diagnostic findings carry straight over to the bench), a quote for the work, or simply the written findings to take elsewhere. The diagnosis is yours either way.