hi everyone, just recent my 03 a4 1.8t waterpump went out on me. i got the car towed home and did the diy water pump/timing belt change. after i got done and everything works. but when i took the car around the block to make sure it doesnt over heat i notice the coolant light flashes on the cluster. coolant is at the max on the coolant tank.


could it be the coolant temp sensor?? i dont have any check engine codes.

 

Make sure you have all the air out. Usually takes a few tries and heat/cool cylces to purge all the air... Is this the 'coolant temp' or 'coolant level' light?

 

There's most likely air in the system, make sure is completely purged out.

 

yupe just like everyone said. the sensor under the coolant bottle was unplugged. thanks everyone and have a happy n safe new years