Two problems related to coolant leaking have been reported for the 2004 Audi A4. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Audi A4 based on all problems reported for the 2004 A4.
My Audi stopped blowing out heat first and then the check engine light came on. When I took it to get the check engine light code tested it read pressure default. Not long after my air bag light came on. Now my car is leaking coolant.
During driving check engine start blinking and engine start shaking . After stop and turning off engine for a couple of minutes and starting engine again everything was fine until next day . Start engine and engine light was on , car has 2 cylinder misfire , loosing coolant from cooling flange and thermostat was leaking . I took car to local mechanic and change thermostat, cooling flange , j plug , ignition coils and 4 spark plugs , car was running fine for 1 day and start overheating and loosing coolant again and has 2 cylinder misfire . Called mechanic , he stop by my house and check pressure in the cooling system using special pump , everything looks ok but after taking out 2 cylinder ignition coil and spark plug he noticed a liquid in cylinder 2 and told me that head gasket is probably broken and has to be change ?!?!? cost around $1200. 00 this engine is completely failling a part , I changed so many parts over last 3 years as I own this car , spend over $5000 dollars to make this car running good and always is one thing after another , never ending story !!!! this model supposed to have major recoll and be fixt by Audi !!!!!.