Engineering Office Grafe · Krefeld, Germany
Electronic engineering for classic British cars
Diagnosis, repair, programming and reliable electronic upgrades for Rover, MG, Land Rover, Range Rover, Lotus, Caterham, Morgan, Classic Mini and more.
- Nearly 2,000 customers served
- Worldwide customers and workshops
- 15+ years of specialist development
Specialist support for difficult electronic problems
Practical solutions for vehicles and diagnostic systems that are no longer adequately supported by their original manufacturers.
Immobilizers
Diagnosis, repair, cloning, bypass and modification of Lucas 5AS, 10AS, ALM and Pektron systems.
Immobilizer services →
ECUs and vehicle electronics
Specialist work on Rover MEMS systems, Land Rover TD5 ECUs, Discovery 2 BCUs and related electronics.
Vehicle-electronics services →
TestBook and engineering hardware
Diagnosis, software, repair and hardware support for Rover/Omitec TestBook, plus specialist measurement and control products.
TestBook services →Engineering you can rely on
Diagnosis, reverse engineering, careful circuit design and direct technical support—combined in practical products for dependable real-world use.
What our clients say
Recent feedback collected through our own BritsDoc platform, without a third-party review widget.
Defender immobilizer repaired within 48 hours
A customer in the Netherlands sent a failed Defender immobilizer by express delivery. It was repaired, returned promptly, and followed by additional help diagnosing an unrelated central-locking problem.
Discovery II BCU and EKA support
Fast telephone diagnosis was followed by BCU unlocking and assistance identifying the correct EKA code when the vehicle could no longer be opened or disarmed.
Rover Mini 5AS replacement
Clear advice from the first contact, rapid programming of the replacement module, same-day dispatch after arrival, and a working classic Mini back on the road.
BritsDoc is a brand of Engineering Office Grafe. The complete feedback archive and submission form are maintained on our own website.
Need help with a specific vehicle or module?
Send the vehicle model, year, module type and a brief description of the problem. We will tell you whether and how we can help.