Operation of the overheating and coolant level warning lamp (Audi 100 C3)

On vehicles not equipped with an on-board control system (BCS), the lamp is located in the instrument cluster between the speedometer and tachometer and lights up when the ignition is turned on. It should go out after the engine starts.

If the lamp does not go out or starts to flash while the vehicle is moving, the following malfunctions are possible:

- overheating of the coolant;
— deviation from the normal coolant level.
In this case:

- stop the car and turn off the ignition;
— let the engine cool down and check the fluid level in the expansion tank.
If the fluid level is normal, but the lamp continues to light, contact a service station.

If the malfunction is caused by a malfunction of the fan, you can drive to the nearest service station under your own power, provided that the fluid level is normal and the indicator lamp has gone out. Do not leave the engine idling and drive at a speed that ensures the engine is cooled by the oncoming air flow.

The article is a reprint of material from audimanual