Vehicle Security & Immobilisers
Vehicle security installation and immobiliser diagnostics in Mansfield, Nottingham and the surrounding area. We separate two kinds of work: fitting additional security systems, and diagnosing faults in the factory immobiliser.

Security installation
- CAN immobiliser installation
- Vehicle alarm systems
- GPS-based security and tracking
- Security system diagnostics
- Coding of compatible replacement modules, after verification of identity and authority
Dash cam installation
Front and rear dash cams, including 4K models, hard-wired to the vehicle so they power up with the car and can record while parked. Cables are hidden in the trim, and we check the camera, GPS and app connection before handing the car back. More about dash cam installation →
Factory immobiliser faults
- Engine starts then stalls
- Key not recognised
- Immobiliser warning
- ECU / key / cluster synchronisation fault
Common symptoms & diagnostic trouble codes
The codes below are documented examples. A fault code is a starting point for diagnosis, not proof that a control unit has failed. Code meanings vary by manufacturer and model. This is a factory immobiliser code, not a fault of an additional CAN immobiliser.
| Fault code | Description | Typical symptoms | What should be checked | Related service |
|---|---|---|---|---|
| P1570 (VAG) | Engine start blocked by immobiliser | Starts then stalls, immobiliser light | Key, transponder, cluster and ECU synchronisation, supply and CAN | ECU programming |
How we test
We agree the scope of diagnosis before starting. We explain what was checked, the findings and any limits of the assessment. A fault may not always be reproduced or identified within the initial assessment; any further work and its cost are agreed before proceeding.
What to send us before a quote
- Vehicle details and registration
- For key, immobiliser or security work: before the work is carried out we verify your identity and authority to instruct the repair (see below). You do not need to send documents with the quote request.
- Symptoms and fault codes
Where the work is done
Local service: at the vehicle or at our workshop in Mansfield, Nottingham and the surrounding area.
FAQ
How do you verify customers for key or immobiliser work?
Before carrying out security-sensitive work, we verify the customer's identity and authority to instruct the repair. Supporting vehicle or identity documents may be requested where appropriate. We only collect and retain information necessary for verification.
Related services
How modern cars are stolen
Relay attacks and CAN injection explained, with what actually helps: how cars are stolen without the key – and how to protect yours.

Local service near Mansfield – lab work by post
Mobile appointments in Mansfield, Nottingham and Nottinghamshire by arrangement. Supported electronic modules can be posted after booking. Parts drop-off by prior arrangement. Contact us before visiting.
Request a quoteWhatsApp usSend a unitRelated services
From the knowledge hub
Request a quote
Tell us about the vehicle and the problem. We confirm compatibility and the price before any work is booked.
- Reply from a technician, not a call centre
- No obligation – quote first
- UK-wide by post, local work in Mansfield & Nottingham
Prefer not to post it yourself? Ask us and we quote a collection from your home or workshop for your postcode.
Popular repairs
Module repairs we carry out by post, with bench testing and a written report.










Hybrid & EV High-Voltage System Diagnostics
VW Group 48V Electric Turbo Compressor Test & Repair