Knowledge Hub
Guides on module repair, tuning, telematics, vehicle security, CAN/J1939/DBC and hybrid power electronics.
Land Rover 48V DC/DC Converter Fault – Symptoms, Warning Messages, Recall Check and Repair Options
Stop Safely Electrical Fault Detected, flat 12V battery, loss of drive? How to recognise a failed 48V DC/DC converter on Land Rover, Range Rover and Jaguar MHEV, check the recall and choose...
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How cars are stolen without the key – and how to protect yours
Relay attacks and CAN injection let thieves take modern cars without the key. How these methods work and what actually helps –...
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How electronic modules are tested on the bench – and what a bench test cannot show
What happens during a bench test of an ECU, BCM, ABS module or cluster, what the PASS / PARTIAL / FAIL result...
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BMW / MINI lights not working after battery or coding work – the FRM fault explained
Why BMW and MINI footwell modules (FRM) often stop working after a voltage drop during coding, jump starting or a flat battery,...
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How to remove, pack and post an electronic module safely
Electronic control modules can be damaged by static, impact and moisture in transit. How to remove, pack and post a module so...
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Repair or replace? A practical guide to faulty electronic modules
When a control module fails, there are usually three options: repair the original, fit a new unit, or fit a used one....
Read article →Land Rover & Jaguar 48V DC/DC Converter (ETYAA) Repair and Testing
JLR 48V/12V DC/DC converter symptoms, part numbers and bench assessment. £80 assessment plus transport; repair quoted individually after diagnosis.
Read article →Send the code, vehicle and symptoms – we tell you what to check first.