The red flashing on startup means the car is slightly low on coolant the heat of the engine is expanding the coolant and the level goes over the minimum in the coolant bottle and turns the flashing red light off. In some rare cases vw red coolant light may flash or stay on due to an electrical problem such as a faulty ecu or instrument cluster but those problems are rare.

What To Do If Your Vw Or Audi Coolant Light Comes On Youtube

On 83 85 models it is very small with only one yellow red wire going to it b.

Vw temperature light flashing red. Tire pressure low this yellow symbol means your tire pressure is low or system failure you will hear a 1x audible warning. If the red coolant light stays on when the engine is running it means that the engine control unit ecu has detected a cooling system problem. Check the coolant temperature sensor and the coolant level sensor and make sure that they are plugged in.

What does vw red coolant light mean. The coolant temperature gauge and led on all 1983 1991 vanagons are comprised of four main components. Remove the harness to them and check the sensor for resistance.

Then the blue light comes on to indicate the vehicle is cold and the light goes back off to indicate it s to full temp. The engine may have overheated or a sensor is operating out of range. For the level sensor if the coolant is full there should be no resistance as the sensor is in a closed loop.

1 the gauge and led itself in the dashboard 2 the coolant temperature sensor on the thermostat housing on the engine a. Red flashing warning light. Malfunction in the electronic steering column lock you will hear a 1x audible warning.

If the coolant red light is flashing then that means that a sensor is not responding to the computer system at that time.