545
questions

Where is the Engine Control Unit (ECU) located in a 1999 Audi A6 Quattro?

My output shaft is leaking. Rear differential output shaft BOTH left and right leaking. Reseal of Vanos Valve??

I've been told my output shaft seal is leaking, also rear differential output shaft left and right are leaking & the Vanos valve both left & right are leaking. I'm told the Vanos valves are located below the valve cover gaskets & require removal of the valve covers for resealing. I've spent $1400 for water pump and was wondering if this should've been brought to my attention at that time?

My Headlights, AC, Heat, Blinkers & Wipers ALL went out at the same time. My brights, hazards, break lights & radio still work. Fuses appear to be okay, and I replaced the relay located in steering column but no avail. My local Audi dealer couldn't give me a definite answer either.

Also, at the same time my dash display for PRND234 began lighting up in "safe fail mode" causing the car not to shift. If I put my foot to the floor on the gas pedal it just gradually gains speed but never shifts. Sometimes if I turn the car off and back on then it will go back to normal and the dash display is not lit up however while I'm driving, at any point it will kick into the safe fail mode, jerk harshly, then the gear display will light up solid. Could these all be linked to some sort of electrical issue?

Thanks for your help.

seat won't go back.

Brother in law offered me car at what seems a great price...but I worry about cost to repair/replace Transmission

The horn makes a beep beep beep noise in hot weather without me turning on the car. It turn on and off and at times the door will lock and unlock automatic. What could it be?

Don't care about unlocking it, I want a radio I can plug my iPod into.

My car is Audi Quattro Avant A6 ( 4A ), 2.0L Motor, Bensin,5 Manual Gear.
Best regards

windshield wipers front&rear stop working at the same time. The emergency lights work.

oil lesk on passenger side

all power window went down on day and at the end of the day first no windows would go up and then the back went up but now the front will not roll up and they all are power windows. plus the back will not work up or down. in checking the fuse it was tested as good. can you help me I need my windows up before it rains again. thank you.

Is 35/hr a bad fee and does anyone know any side mechanics that work on Audi

There is a seal that needs to be replaced in the turbo. Causes the exhaust to smoke when idling. Need an estimate on how much that would cost to fix. Can anyone help???

Am about to start on a major project (replacing turbos, timing belt, figure out torque converter problem) on my 2003 A6 2.7tt Quattro. Has been sitting idle for almost a year and battery was dead. Just installed new battery and got the car to run, but can't get it to shift out of park. When depressing the brake pedal, the brake depress light will not go out on shifter panel. Also cannot get my OBD to link with engine. When the key is on, not running, the door lights will turn on, then start blinking. I am wondering if I have an alarm issue due to the battery being dead for so long.

My car used to be so quiet when I turned on the engine. So quiet that sometimes I would switch it on again forgetting it was already on. That was a 100k miles ago. Now it's not as quiet and I definitely can tell the engine is on with a little vibration, with 170k miles on it, that is expected and acceptable, don't you think? I had an earlier post about the coolant reservoir replacement, now that that's resolved, my new mechanic tells me the engine (L & R) and the transmission mounts (both) need to be replaced because they're getting old and loose hence the vibration. There were certain services on my car that my old mechanic suggested to ignore, unnecessary repairs on an old car is truly a waste of $$. For as long as it did not affect the car performance/engine, leave it alone. (1) I want to know if replacing the part in question is one I can ignore, after all, the little vibration I feel on the car is not really bothering me? (2) How much does it normally cost for this kind of service if I took my car to an Audi Specialist? (3) Can you please recommend a trust worthy one within 15-30 miles from 92336 area code SoCal? Thanks in advance.

Diagnostic error code P-0492. faulty air solenoid valve and air system relay

Vehicle hesitates before slowly accelerating after stop. Will sometime "jerk" before picking up speed after stop. Problem is worse when going up hill. How much would it cost to repair?

just had the water pump sensors replace and timing bebt replace

I hope someone can give me a sound advise. The coolant reservoir tank on my Audi A6 Quattro 1995 was replaced 2x in the past 2 years & now coolant is leaking again. At least half of a full tank leaks out to the ground directly underneath the coolant tank on the driver side. What could be the cause of the recurring leak? Did the mechanic miss anything? If I have the reservoir tank & cap replaced & the leak persists, what then? Where else should I look for possible source of leak?

What do I need to do to replace the entire GAS TANK? Per audi dealership the leak had nothing to do with recall?? They sd the gas tank needs to be replaced and they want me to cough up $3700.00...I paid only $2000.00 more for the entire car??

Need to find cheaper way to get this fixed...just need to know what I'm looking for in parts??

My Audi A-6 check engine light just came on. It just started running very rough (as if to shut off). What could this possibly mean?

Edsel

dEALER REPAIRED UPPER CHAIN COVERS WHILE UNDER WARRANTY NOW REAR TIMIG COVERS EED TO BE REPLACED AND CAR IS OUT OF WARRANTY, DOES THIS KIND OF LEAK HAPPEN INSTANTLY OR COULD IT HAVE BEEN OVERLOOKED WHEN THE FIRST LEAK WAS REPAIRED? DOES THIS TYPE OF LEAK JUST SUDDENLY HAPPEN?

ABS PUMP CYCLES WHEN CAR IS ALMOST STOPED EVERY TIME YOUR COMING TO THE LIGHT OR STOP

where is dipstick to check transaxle oil? will engine stop if oil gets to low. Not siezed but shut down if oil low?

How do I reset the "service!" reminder when it has been serviced? Also, how do I change readings from celcius to farenheit?

I have a 1995 Audi A6 Quatro.It was running fine and one day just quit on me. I have replaced the timing belt, tensioners, crank and cam shaft sensors, ignition module, driver's side head and the mechanic is still telling me that he's trying to figure out why power is going to the PCM but nothing is coming out. I have shelled out all this money for problems that hasn't seemed to be the problem. Please help in North Augusta

The radiator fans run all of the time at full speed even for a short while after the ignition is turned off. Is there some thermostat some where that needs replace?

Is there anywhere on this site that I can go to view a complete diagram of the Audi A6 Quattro 2.8L exhaust system?
Thanks....Ray-audi

The supporting structure for my exhaust system eroded causing the middle of the system to drop almost to the ground and caused cracks in various places. Is there any way to repair this without replacing the complete exhaust system? Can only the faulty parts be replaced? Can the support structure be repaired?
Thanks ray-audi

How do you remove door panel without damaging them?