Audi Electrical Diagnostics
Audi sits on the same VW Group platform electronics as Volkswagen (BCM, gateway, KESSY, MIB, ODIS diagnostics), but adds premium driver-assistance and MMI infotainment systems. Audi's Virtual Cockpit, MMI Touch and Matrix LED lighting introduce their own module and software faults. Higher-spec models carry more ADAS radar and camera systems, so calibration after screen, bumper or sensor work is critical.
Audi Control Modules & Electronics
Key modules and electronic systems used across Audi vehicles. Correct identification of the module is the first step in proper diagnosis.
BCM — Body Control Module
Central body electronics, shared VW Group architecture.
Gateway
CAN/LIN gateway and diagnostic interface.
MMI / MIB Infotainment
Audi MMI and Virtual Cockpit; display, reboot and connectivity faults.
KESSY
Keyless entry and start.
Matrix LED / Lighting Control
Adaptive headlight control; bulb and module faults.
ABS / ESC + ADAS
Stability plus front radar and camera driver assistance.
Common Audi Electrical Faults
Faults we frequently see on Audi vehicles. Each links to a detailed, all-makes guide covering symptoms, causes and our diagnostic approach.
Body Control Module (BCM) Faults
Central body electronics controlling locking, lighting, wipers and comfort.
READ GUIDEKey Not Detected
Vehicle doesn't recognise the key — won't start or unlock.
READ GUIDEABS Warning Light
ABS warning on — stability and braking-system fault.
READ GUIDEBattery Warning Light & Vehicle Not Charging
Charging-system fault — battery warning or vehicle not charging.
READ GUIDEParking Assist Unavailable
Parking sensors or park assist not working.
READ GUIDEAirbag / SRS Warning Light
Airbag or SRS warning light on — restraint-system fault.
READ GUIDEElectric Power Steering Fault
EPS warning — steering assistance reduced or unavailable.
READ GUIDEAir Suspension Faults
Air-suspension warning — ride-height or compressor fault.
READ GUIDECAN Bus / Network Communication Faults
Network communication fault affecting multiple modules.
READ GUIDEAudi Models We Cover
Audi Electrical Fault?.
Tell us about your Audi, the symptoms and any warning messages. OBD_PAL diagnoses the complete system before recommending any repair — don't guess, diagnose it properly.