Details in this section are the dashboard warning lights, engine management lights and fault symbols associated with the Audi A3 and Audi S3.
Each warning or information symbol is similar or identical to those found on the Audi A3 / S3 dashboard and included is the explanation meaning of the light symbol.
Dashboard lights may vary depending on the version of the Audi A3 S3 and the country in which it was manufactured.
Typically the colour of the light symbol illustrates how severe the situation is.
A red symbol often required immediate attention, a orange symbol is less immediate, a flashing symbol is urgent and other colours are used to illustrate a system that is in operation.
Audi A3 / S3 Emissions Control Warning light
The engine management warning light should illuminate when the engine is started and should extinguish shortly after. If the light remains on, it suggests there’s a problem with the engine emissions control system. This isn’t urgent though assistance should be sought from a qualified technician soon.
Check engine oil dashboard symbol
This symbol lights up on the Audi A3 permanently to inform you that engine oil levels are low and need to be replenished. Running significantly low on engine oil can cause catastrophic damage to an engine. See how to check engine oil for further information.
Faulty Engine Oil Sensor Light
This symbol, the same as above will this time flash to inform the driver that there’s a fault in the engine oil sensor. Non-urgent but assistance should be sought soon.
Engine oil Pressure Too Low Warning Light
This symbol lights up in red on the Audi A3 / S3 warning the driver that the engine oil pressure is too low. This may suggest a serious fault. If this symbol illuminates whilst driving, stop the car and switch off the engine immediately.
Cooling System Fault Light
This symbol illuminates red to indicate there’s a fault within the engine system cooling system. Engines that overheat can seize. If driving and this symbol illuminates, pull over and switch off the engine immediately. See what is engine coolant and how to check engine coolant for further details.
Brake or handbrake applied warning light
This symbol will illuminate on the dashboard to indicate one of two things. 1. The handbrake is applied, please release the handbrake to continue. 2. If the light remains illuminated with the handbrake released, this indicated a fault in the car brakes system. If driving when the symbol illuminates and the handbrake is fully released, pull over and stop the car immediately and seek assistance. For further information, see why is the brake light on in my car?
Anti-lock Brakes (ABS) System Fault
This ABS symbol should illuminate for a brief period when the engine is started. If the light remains on or illuminates whilst driving, there is a problem with the anti-lock braking system (ABS). This is not immediately urgent as normal braking will still be effective, though ABS may not function. See the Anti-Lock Braking System guide for understanding what ABS is and how it works.
Battery Charging / Alternator Fault Light
This symbol should illuminate on the Audi dashboard when the engine starts and soon after extinguish. If the light remain on, it suggests there’s a fault with the alternator and the battery may not be receiving sufficient charge. Engine starting issues may arise. To maintain reliability, assistance from an authorised technician should be sought immediately. See Why is the battery warning light on for further help.
Airbag Check / Fault DASHBOARD Light
This symbol should illuminate when the engine has started and shortly go out. If the light remains on or illuminates whilst driving, it suggests there’s a fault with the airbag system. This may result in the airbag not being deployed in the event of an accident. For further information about airbags and possible faults, see why is the airbag light on?
Tyre Pressure Warning Light
This orange symbol illuminate when the engine is switched on and should shortly extinguish. If the light remains on or illuminates whilst driving, it suggests one or more tyres have insufficient air pressure. Stop the vehicle immediately to check tyres. See tyre legal limit for information on having too high and too low pressure in tyres. If you are experiencing problems, see tyre pressure warning light keeps coming on. After correcting pressures or changing tyres / wheels, you may need to reset the tyre pressure monitor system (TPMS).
Adaptive Light DASHBOARD Fault light
Audi A3 adaptive lights allow you to see further at night, in poor lighting conditions and around bends by following the direction of travel. Light illuminates to suggest a fault. Non-urgent as normal lights will continue to illuminate.
Headlight Range Control Warning Light
Audi A3 headlight range control automatically adjusts the angle of the lights to provide the best possible range of lighting based on the car load. The headlight range control dashboard warning light suggests a fault within the system only and normal night driving lights will work as usual.
Light / Rain Sensor Defective WARNING Light
Audi A3 is fitted with a system that detects light levels and rain and automatically activated the windscreen wipers or headlights depending on what has been detected. If this symbol remains illuminated it suggests a fault in the system. Manual activation of windscreen wipers and headlights is required until system is repaired.
Diesel Particulate Filter Obstructed Warning Light
The Audi A3 diesel particulate filter obstructed warning light may illuminate whilst driving to suggest that diesel emissions are not being filtered correctly. This is non-urgent though the vehicle may not be complying with legal emission standards. Seek assistance from a qualified technician soon.
A3 / S3 EPC Engine Management System Warning Light
The Audi A3 onboard computer system, or EPC Engine Management System continuously monitors and maintains various components within the engine. The EPC light should extinguish after the engine has started. If the light illuminates or remains on, this suggests a fault in the engine. The type of fault varies and a fault code will need to be established from a qualified technician to establish a fix. Though non-urgent, it’s something that needs looking at soon.
Electronic Stabilisation Program (ESP) Warning Light
The Audi A3 and Audi S3 has a Electronic Stabilisation Program (ESP) which initiates traction control and braking distribution for safer driving. The ESP light will become illuminated if the system is manually turned off. If the symbol illuminates but the system hasn’t been manually switched off, it suggests a problem with the Electronic Stabilisation Program. Generally no difference to the cars control will be noticed under normal driving conditions, though to allow for overall safe control under variable road and driving conditions, system need to be rectified.
Power Steering DASHBOARD warning lights
Power steering problems may occur in the Audi A3 as indicated by the symbol. Red symbol indicated a total loss of power due to failure in the system, orange symbol indicated a partial loss of power. This is non-urgent and not dangerous as normal steering is still possible though turning the wheel may feel more difficult whilst stationary or moving slowly as there will be no mechanical assistance.