Vehicle Electrical Faults & Diagnostics

Central body electronics controlling locking, lighting, wipers and comfort.

Vehicle doesn't recognise the key — won't start or unlock.

ABS warning on — stability and braking-system fault.

Charging-system fault — battery warning or vehicle not charging.

Parking sensors or park assist not working.

Airbag or SRS warning light on — restraint-system fault.

EPS warning — steering assistance reduced or unavailable.

Air-suspension warning — ride-height or compressor fault.

Network communication fault affecting multiple modules.

Several warnings at once — often one underlying cause.

Engine management ECU fault — running or starting issues.

Headlight, LED, adaptive or DRL lighting faults.

Central locking not working or operating intermittently.

Battery going flat when the vehicle is standing.

Airbag, seatbelt-tensioner and occupancy-sensor faults. Red SRS light diagnosis, crash-data clearing where appropriate and module replacement with correct coding.

Check-engine / MIL warnings, misfires, emissions codes, DPF and EGR faults. Diagnosed at sensor, actuator and ECU level — not parts swapped on a guess.

Key not recognised, all-keys-lost, additional-key coding and immobiliser faults. Factory-level key programming across all major marques.

ABS, traction-control and stability-control warnings. Wheel-speed sensors, ABS modules, pumps and coding — diagnosed and repaired properly.

Hybrid and electric-vehicle high-voltage diagnosis — traction battery, inverter, drive motor and HV isolation faults, to manufacturer safety procedures.

Battery, charging, alternator, earth points, fuses and feeds. Parasitic-drain tracing and full 12V system health checks across the whole vehicle.

CAN, LIN, FlexRay, MOST and Ethernet bus faults. Modules dropping off the network, 'no communication' codes and network-topology diagnosis.

Short circuits, open circuits, chafed looms, broken wires and corroded connectors. Traced, repaired and tested — not just bypassed.

Chewed wiring, soy-based insulation attacks and nest damage. Full loom inspection, repair and rodent-proofing protection.

Failed ECU, TCM, BCM or sensor module — diagnosed, repaired, cloned or replaced and coded to factory standard.

BCM / SAM / UEC faults — central locking, lights, wipers, horn and interior functions. Diagnosis, cloning, replacement and coding.

Dead or intermittent dash, gauges dropping out, backlight failure and CAN coding. Cluster repair, replacement and coding.

Locks not working, deadlocking, key-fob and convenience faults. Door modules, lock actuators and comfort-system diagnosis.

False alarms, siren faults, alarm that won't set or won't disarm. Factory alarm diagnosis, sensor testing and module coding.

Adaptive cruise, lane-keep, AEB, blind-spot and radar/camera calibration. Calibration after screen, sensor or module changes.

Reversing cameras, 360 systems, parking sensors and park-assist faults. Diagnosis, camera/sensor replacement and calibration.

Seatbelt tensioners, occupancy sensors, crash sensors and passive-safety faults. Full SRS and safety-loop diagnosis.

Advanced German electronics across the full BMW range

BMW-group electronics in a compact platform

MQB-platform electronics shared across the VW Group

VW Group electronics with premium Audi systems

VW Group MQB electronics for SEAT models

Performance VW Group electronics

VW Group MQB electronics for Škoda models

VW Group electronics for vans and commercials

JLR electronics with KVM and BCM architecture

JLR electronics plus terrain and suspension systems

Premium JLR electronics with advanced chassis and ADAS

BCM, SYNC and APIM electronics across the Ford range

BSI and BSM architecture across Peugeot models

BSI / BSM PSA electronics for Citroën

Premium PSA electronics for DS

BCM, UEC and REC architecture

SAM, EIS and CGW electronics architecture

UCH body control and network electronics

Renault-group electronics for Dacia

CEM, DIM and SPA electronics architecture

Premium VAG electronics with performance systems

Body computer and network electronics

Stellantis electronics with performance systems

Stellantis electronics with 4x4 and ADAS systems

BCM and CAN gateway electronics

Main body ECU and network electronics

Toyota electronics with premium systems

MICU / BCM body electronics

BCM and CGW electronics architecture

Hyundai-Kia BCM and gateway electronics

BCM and FFD electronics architecture

ETACS body electronics architecture

BCM body electronics