

Understanding your Audi dashboard warning lights is essential for keeping your vehicle safe, reliable, and roadworthy. Each Audi warning light symbol has a specific meaning, and knowing what they indicate allows you to take the correct action quickly. Whether you drive an Audi A3, A4, Q5 or another model, the warning lights follow the same colour-coded system.
Audi warning lights are designed to alert you to the status and safety of your vehicle. These dashboard warning lights are generally divided into three main categories:
If a red or orange Audi dashboard warning light appears, it’s important to have your vehicle checked by a trained technician as soon as possible to prevent further damage and ensure your safety.

The brake light
The brake light typically indicates one of two things - there is a fault within your braking system, or your brake fluid level is low.

The park light
The park light will illuminate when your parking brake is set. If the park light is blinking, then reapply the break to secure your vehicle.

The coolant light
The coolant temperature light will illuminate if your coolant level is low or the coolant is getting too hot. Do not drive with this light on - check your coolant levels and seek assistance.

Oil light
The red oil level light means your oil levels are low and need filling immediately. If this light appears with a similar looking amber light and your oil levels are correct, then there could be a sensor fault.

The battery light
The battery symbol light will appear to indicate an electrical system malfunction. Do not drive the vehicle and seek assistance.

The seatbelt light
The seatbelt sign will illuminate if a passenger or the drive does not have their seatbelt on while the vehicle is on.

The power steering light
This light will illuminate if there is a fault with your power steering system or the all-wheel steering system. Stop the vehicle when it is safe to do so and seek assistance. This light also appears as an amber warning if the fault is less severe

The power steering locked light
This light indicates that the electronic steering lock has malfunctioned. You may not be able to start your vehicle if you turn off the ignition. Seek assistance and do not tow your vehicle. This light also appears as an amber warning if the fault is less severe.

The key light
The key warning light indicates that there is a fault with your Audi’s engine start system. Do not turn the engine off as you may not be able to restart it and take your Audi for a service immediately. This light also appears as an amber warning if the fault is less severe.

The red AdBlue light
A red AdBlue light means that you need to refill your AdBlue tank otherwise the engine may no longer start.

The red AdBlue maintenance light
The AdBlue maintenance light will only illuminate if there is a problem with the AdBlue tank or if there is a malfunction. Do not stop your car as you may not be able to restart it - seek assistance immediately.

Worried about a dashboard warning light? Book a free Audi health check with our expert technicians. We’ll run a full diagnostic to spot any issues early and give you clear advice on what needs attention—no obligation, completely free.
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