Diagnostics

Audi Warning Lights Guide

Audi dashboard warning light guide explaining common symbols, what they mean, and when to seek professional help for your A3 or A4.

Modern Audi vehicles have sophisticated onboard diagnostics that monitor every system. When a warning light appears on your dashboard, understanding what it means helps you decide whether to continue driving or call for help. At GSR Garage in Telford, we regularly diagnose warning light issues on all Audi models. The engine management light (often orange or amber) can indicate anything from a loose fuel cap to a serious engine fault. Common causes we see on Audi vehicles include multitronic CVT failure on front-wheel-drive models and mechatronic unit failure on DSG gearboxes. If the light is steady, you can usually continue driving but should have the vehicle checked soon. If the light is flashing, stop driving immediately and seek professional assistance. The DPF warning light on diesel Audi models indicates the particulate filter needs regeneration. mechatronic unit failure on DSG gearboxes is a common cause. Driving at motorway speeds for 20-30 minutes may clear it. If the light stays on, professional cleaning or replacement may be needed. The ABS warning light indicates a fault with the anti-lock braking system. suspension bush premature wear can trigger this light. While the brakes will still work, the ABS may not function in an emergency stop. The airbag warning light should be investigated immediately as it indicates the supplemental restraint system may not deploy in a collision. For Audi vehicles, the battery warning light could indicate ignition coil failure on TFSI engines or alternator failure. The AdBlue warning light on diesel models means the system needs attention, and quattro rear differential oil seal leaks is a common cause. Based in Telford, GSR Garage provides professional Audi servicing and repairs for customers across the entire Shropshire region.