When something isn’t working — your car won’t start, the key isn’t recognised, or the steering lock won’t release — our diagnostic service quickly and accurately pinpoints the problem.
We specialise solely in auto locksmith diagnostics, focusing on your vehicle’s key system, locks, ignition, immobiliser, and communication modules.
We aim to identify the most cost-effective solution before any parts are replaced, saving you time and money.
Mobile service – we come to you, roadside, home, or work.
Fixed price: £120 – clear, honest, and reliable.
If you require further auto locksmith services from South Devon Auto Locksmiths, we will offer you a 50% discount on your diagnostic fee.
Diagnostic fee to be paid in full if a return visit is required - then the monetary equivalent will be deducted from the repair visit.

We can assess everything related to your vehicle’s key system, including:
A car key battery replacement is covered under diagnostics for removeable batteries. Rechargeable batteries can be charged under diagnostics.

If your ignition barrel or steering lock is causing problems, we can:
Cleaning and picking the locks is all covered under diagnostics.

Using specialist locksmith-level diagnostics, we can:
Reprogram customer keys - where applicable and advised in advance if reprogramming keys falls under diagnostic remit - car specific.