Audi Warning Lights: Dashboard Symbols, Meanings & What to Do

Audi warning lights tell you when your car needs attention. Some Audi dashboard lights are simple reminders. Others warn you about serious engine, brake, oil, battery, steering, transmission, or airbag problems.

Start with the color. Red means stop safely. Yellow or orange means inspect soon. Green, blue, or white usually shows that a system is active.

This guide explains Audi warning light symbols, driving safety, and next steps. It also shows how Carista can help you inspect Audi dash lights meaning from your phone.

 

What does this warning light mean on your Audi?

Common Audi warning lights and meanings

Audi check engine light

The Audi check engine light means the engine control system found a fault. Common causes include a loose fuel cap, oxygen sensor fault, ignition issue, misfire, vacuum leak, airflow sensor fault, turbo issue, or catalytic converter problem.

You may drive carefully if the light is steady and the car feels normal. Stop if it flashes, the engine shakes, power drops, or you smell fuel or burning. A diagnostic scan helps identify the code. Carista can read engine codes on supported Audis.

 

Audi EPC light

The Audi EPC light relates to Electronic Power Control. Common causes include throttle body faults, accelerator pedal sensor issues, brake light switch faults, turbo control problems, low voltage, or engine-management faults.

Drive carefully if the car feels normal. Stop if the car loses power, will not accelerate, enters limp mode, or EPC appears with a flashing check engine light. A scan can identify the cause.

 

Audi oil warning light

The Audi oil warning light can mean low oil level, low oil pressure, high oil temperature, or an oil monitoring fault. Causes include oil leaks, wrong oil type, faulty oil pressure sensor, oil pump problems, or engine wear.

A yellow warning means check the oil level soon. A red oil pressure warning means stop safely and turn off the engine. Do not drive if the level is correct but the warning remains. A scan may identify sensor faults, but low oil pressure is an emergency.

 

Audi brake warning light

The Audi brake warning light can mean the parking brake is engaged, brake fluid is low, pads are worn, or the brake system has a fault.

Continue only if the light turns off after releasing the parking brake. Stop if the pedal feels soft, braking distance increases, brake fluid is low, the warning is red, or ABS appears. Check fluid if safe and scan the brake or ABS system.

 

Audi ABS warning light

The ABS warning light means the Anti-lock Braking System has a fault. Causes include wheel speed sensor failure, ABS wiring damage, low voltage, dirty sensor rings, brake faults, or module problems.

You can drive carefully if the brake pedal feels normal and no red brake warning is active. Stop if braking feels abnormal or the car becomes unstable. A diagnostic scan can identify the affected sensor, wiring, or module.

Carista can read ABS faults on supported Audi models.

 

Audi battery warning light

The Audi battery warning light usually means the charging system is not working correctly. Causes include alternator failure, weak battery, loose terminal, damaged wiring, voltage regulator fault, or broken drive belt.

Do not drive for long. Your Audi may run until the battery drains. Stop if steering becomes heavy, lights dim, multiple warnings appear, or the engine runs poorly. Turn off non-essential electrical loads and get to a safe place. A voltage check and scan can confirm the cause.

 

Audi coolant temperature warning light

The coolant temperature warning light means the engine may be overheating or coolant may be low. Causes include leaks, faulty thermostat, radiator fan faults, water pump failure, blocked radiator, or sensor faults.

Do not drive if the warning is red or the temperature gauge is high. Stop safely, switch off the engine, and let it cool. A scan can help identify sensor, fan, or cooling-system faults after the engine is safe.

 

Audi tire pressure warning light

The Audi tire pressure warning light means one or more tires have incorrect pressure. Common causes include underinflation, punctures, pressure loss, temperature change, incorrect pressure after service, missed TPMS reset, or sensor faults.

Drive carefully to a safe place if the tire is not flat. Stop if the car pulls, the tire looks flat, or you hear flapping. Check cold tire pressures, inflate correctly, and reset or store pressures in MMI if required. Scan if the warning returns.

 

Audi airbag / SRS warning light

The airbag or SRS warning light means the restraint system has a fault. Causes include seatbelt pretensioner faults, airbag sensor issues, passenger occupancy sensor faults, wiring under the seat, crash sensor faults, low voltage, or control module issues.

The car may drive normally, but airbags may not work in a crash. Inspect it soon. Stop if it appears after an accident or with other major safety warnings. A scan can identify the affected SRS component.

Audi steering warning light

The steering warning light means power steering or steering assistance has a fault. Causes include low voltage, steering angle sensor faults, electric steering problems, wiring issues, module faults, or calibration errors.

Drive carefully if the light is yellow and steering feels normal. Stop if the warning is red, steering assistance fails, or the wheel becomes hard to turn. A diagnostic scan of steering and related modules can help find the cause.

 

Audi glow plug light for diesel models

The glow plug light is normal on Audi diesel models during startup. If it flashes while driving, it usually means an engine management fault. Causes include glow plugs, relay faults, brake light switch issues, turbo control faults, DPF issues, emissions faults, or diesel engine sensors.

Drive carefully and scan soon if it flashes. Stop if your Audi loses power, smokes heavily, runs roughly, or shows another red warning.

Audi AdBlue warning light for diesel models

The AdBlue warning light appears on Audi diesel models with SCR emissions systems. It means the diesel exhaust fluid is low or the AdBlue system has a fault. Causes include low AdBlue, incorrect fluid, sensor faults, SCR faults, pump issues, injector issues, or tank heater faults.

You may drive if range remains, but refill soon with correct AdBlue. Arrange service if the warning turns red, shows no-restart, or stays on after refilling. A scan can confirm whether the issue is fluid level, sensor, pump, injector, or SCR related.

Audi transmission warning light

The Audi transmission warning light can relate to S tronic, Tiptronic, clutch systems, mechatronics, transmission temperature, fluid pressure, gear selection, or control modules. Symptoms may include harsh shifting, slipping, vibration, limp mode, or no gear selection.

Drive gently if the warning is yellow and shifting feels normal. Stop if the transmission overheats, the car will not select gears, you smell burning, or the warning is red. A transmission scan is recommended because gearbox faults often need module-specific codes.

Audi lane assist and driver assistance warnings

Audi driver assistance warnings can involve lane assist, adaptive cruise control, side assist, pre sense, parking assist, cameras, radar, or parking sensors. Causes include dirty sensors, blocked cameras, snow, mud, rain, low voltage, windshield replacement, or calibration issues.

You can usually drive, but do not rely on the affected feature. Stop if it appears with steering, braking, stability, or collision warnings. Clean the camera, radar, grille, bumpers, and sensors. Scan if the warning remains.

 

Audi light bulb failure warning

The light bulb failure warning means an exterior light may not work. Causes include failed bulbs, LED module faults, damaged wiring, poor contact, or incorrect bulb type.

You can usually drive during the day, but stop if you have no headlights at night, no brake lights, or poor visibility. Check all exterior lights and replace the failed bulb or module. Scan central electronics if the warning remains.

 

Audi service due / inspection reminder

The service due or inspection reminder means your Audi needs scheduled maintenance. It may relate to oil service, inspection service, mileage or time-based maintenance, brake fluid service, or a reminder not reset after service.

You can usually keep driving, but schedule maintenance soon. Stop only if the reminder appears with oil pressure, overheating, brake, battery, or engine warnings. Check the service menu in MMI. After maintenance, reset the reminder with the correct procedure or compatible tool.

 

Audi-specific warning light notes

Audi dashboard symbols are not identical across all models. Diesel TDI models can show glow plug, DPF, and AdBlue warnings. quattro models may show drivetrain or stability-related warnings when ABS, traction control, wheel-speed, or transmission systems detect a fault.

Newer Audi models may show detailed MMI messages for cameras, radar, lane assist, side assist, and pre sense. “Drive carefully” is different from “Stop vehicle.”

How to troubleshoot Audi dashboard warning lights

When an Audi dashboard symbol appears, check the color first. Red means stop safely. Yellow or orange means inspect soon. Green, blue, and white are usually informational.

Next, read the MMI message and notice how the car feels. Stop for power loss, overheating, smoke, weak braking, hard steering, or strange noises. For non-critical warnings, check tire pressure, oil, coolant, fuel cap, exterior lights, and visible leaks.

Then run a diagnostic scan. Many Audi warning light symbols come from control modules, so a scan can show the real fault code. Clearing a light does not fix the problem.

How Carista helps with Audi warning lights

Carista helps you inspect Audi dashboard warning lights without guessing. Plug the Carista scanner into your Audi’s OBD port, connect the Carista App, and run diagnostics.

On supported Audi models, Carista can help read and clear fault codes, inspect engine, ABS, airbag/SRS, transmission, and TPMS faults, view selected live data, and reset service reminders.

This matters because one warning light can have many causes. Carista helps you understand what your Audi is reporting and decide whether to drive carefully, book service, or stop immediately.

 

Conclusion: Audi warning lights are easier to handle when you know what they mean

Audi warning lights help protect your car and safety. A yellow warning may give you time. A red warning means stop safely and act immediately.

The best approach is simple: check the color, read the MMI message, notice how your Audi feels, and scan.

With Carista, you can inspect many Audi warning lights from your phone, read fault codes on supported models, and understand what your car is telling you.

*Disclaimer: The information provided in this article is intended for educational and informational purposes only and should not be considered as professional advice. While we strive to provide accurate and up-to-date content regarding OBD2 tools, diagnostics, and related automotive issues, the specifics of each vehicle may vary.

*Always consult your vehicle’s manufacturer guidelines and consider seeking professional assistance when dealing with complex or critical diagnostic issues.