Auto Electrics

Modern vehicles contain miles of wiring, dozens of electronic control modules, and hundreds of electrical connections. When something goes wrong, finding the fault requires specialist knowledge, diagnostic equipment, and patience. JLR Autocare's auto electrical technicians use oscilloscopes, multimeters, and manufacturer-level diagnostic tools to trace and repair even the most elusive electrical faults.

Electrical faults are among the most challenging issues to diagnose. A flickering warning light, intermittent starting problem, or mysterious battery drain requires a systematic approach — not guesswork. Our technicians use oscilloscopes to analyse signal quality, multimeters for voltage and resistance checks, and manufacturer-level scan tools for module communication testing.

Parasitic battery drains are increasingly common as vehicles contain more electronic modules that should sleep when the car is parked. A single module failing to enter sleep mode can flatten your battery overnight. We carry out parasitic drain testing using a clamp meter to identify exactly which circuit is drawing excessive current, then trace the fault to the specific component.

CAN bus (Controller Area Network) faults can cause a cascade of seemingly unrelated warning lights and system failures. A single broken wire or corroded connector on the CAN bus network can affect multiple modules simultaneously. Our diagnostic approach includes network topology testing to identify communication faults.

We also carry out module programming, coding, and replacement for vehicles that require it. Whether it's coding a new window regulator module on a BMW, programming a replacement body control module on a Land Rover, or setting up keyless entry on an Audi, our diagnostic equipment supports the full range of vehicle electronics.

What's Included

•Electrical fault diagnosis using oscilloscope and multimeter

•Parasitic battery drain testing and repair

•Alternator and charging system diagnosis

•Starter motor testing and replacement

•Central locking and keyless entry repair

•Lighting faults — headlights, tail lights, interior

•CAN bus and network fault diagnosis

•Window regulator, mirror and seat motor repair

Or call us on 01462 420999