Vacuum leaks, oxygen sensor failure, and catalytic converter efficiency faults can cause the Check Engine Light to illuminate.
Resources for the Repair and Maintenance of your 2004 Audi A4 Quattro
2004 Audi A4 Quattro
2004 Audi A4 Quattro Problems
A problem with the torque converter can cause the Check Engine Light to illuminate.
Erratic turn signal operation can be a result of a failing turn signal flasher relay which will require replacement.
The digital display portion of the instrument cluster may fail. Our technicians tell us the entire instrument cluster will need to be replaced to correct this concern.
Our technicians recommend having the constant velocity (CV) boots and CV joints inspected at each service. Servicing torn CV boots early can prevent the need to replace the CV half shaft or CV joint.
2004 Audi A4 Quattro Questions and Answers
well on my audi i have rear fog light. i just bought the car about 2 months ago. and i turn on all the light fully and find that one of the rear fog light was out. but then i check the bulb and th...
I feel that my A4's pick up has gone down a lot. It takes a lot more time and revs now to go from 0 to 30 mph. It's a 1.8T, Auto with 90K miles on it. In addition, the car shows "Ser...
Dealer state the belt needs replacement at 75k. Price (private/dealer) is $1300 to $1800. Does this have to happen at this milage? Do these price quotes I am getting sound about right?
I have a leak in my boot that i cant for the life of me find. I took all the sourond trims off the inside of the boot to locate the leak,had someone spray water on the roof to make it trickle off t...