Wiring Problems of Audi A6

Audi A6 owners have reported 15 problems related to wiring (under the electrical system category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Audi A6 based on all problems reported for the A6.

1 Wiring problem of the 2013 Audi A6

Failure Date: 09/21/2020

I own a 2013 Audi A6 around 77k miles. I got the cel and brought it to the dealer. There is an internal transmission coolant value that is part of the cooling system and obviously, that component also helps keep the transmission temperature in check. The issue with this defective part is the valve malfunctions causing coolant to penetrate the transmission control module and from there into the wiring harness. When this happens, it is a catastrophic malfunction of those components and a potential fire hazard. Water and electrical do not mix well.

See all problems of the 2013 Audi A6 🔎.

2 Wiring problem of the 2012 Audi A6

Failure Date: 04/24/2020

Was told by Audi south orlando that a water valve seaped coolant through the connector up through the wiring and into the trans control module causing it to burn out causing a 14,000. 00 catastrophic failure.

See all problems of the 2012 Audi A6 🔎.

3 Wiring problem of the 2012 Audi A6

Failure Date: 04/18/2019

On my car, there is an internal transmission coolant value that is part of the cooling system and obviously, that component also helps keep the transmission temperature in check. The issue with this defective part is the valve malfunctions causing coolant to penetrate the transmission control module and from there into the wiring harness. When this happens, it is a catastrophic malfunction of those components and a potential fire hazard. Water and electrical do not mix well. Pictures are attached. The root of my issue is that there is no way to detect that there is a problem with the automobile until this major malfunction happens. If that were not the case, the consumer could at least have the chance to have the car serviced preventing this huge expense and potential fire hazard. I have an email from the service manager admitting this is the case. In my case. The car ran fine. Then just went haywire. The service manager said coolant got into the control module and �fried� the module and wire harness. The pictures that are attached are from the same instance I found online and not pictures from my car. This is a very serious issue with this car. Audi has turned me down twice to fix this potentially combustible problem. Very scary.

4 Wiring problem of the 2012 Audi A6

Failure Date: 01/31/2018

My mil ( malfunction indicator lamp ) came on, in my Audi A6 2012 on 1/21/18. I made an appointment with my Audi dealership on 1/31/18. I was informed that my trans coolant valve was leaking into a wiring harness. They replaced my n509 valve and wiring connector. I found a technical service bulletin regarding this problem in my car as well as other Audi models. There was a recall for this in Audi a8 2010-2013. ( I have included these in the files that I have uploaded. ) the affected a8 vehicles have a coolant valve leak allowing coolant to enter the engine control module causing a loss of power or the engine to stall. A vehicle stall increases the risk of a crash. I had my car repaired as my wife drives this car and I certainly did not want the car to stall and possibly have a crash. It seems to me that the Audi A6 2012 should also be included in this recall. If any additional information is needed, please contact me.

5 Wiring problem of the 2005 Audi A6

Failure Date: 05/04/2015

The left drivers side break light/signal will stop working intermittently. I have noticed that it tends weather dependent. I have read Audi forums whom have said that the electrical wiring when exposed to heat (70 degrees fahrenheit and above) will short causing the led break/signal light to not work. My mechanic stated that it is also because of a faulty "light control module + wiring. " due to the intermittency and high cost of the job it has not been something that I have been able to fix. I am afraid that eventually none of the tail lights will work or even after repairing it, the same issue will arise. I first noticed this in may of 2015, however it was fine through the fall and winter. I again noticed it randomly through the summer months (June-Aug).

See all problems of the 2005 Audi A6 🔎.

6 Wiring problem of the 2012 Audi A6

Failure Date: 12/17/2014

Windshield wipers ceased to work creating dangerous situation. Dealer denied express warranty claim. Wiring on wipers was so flimsy as to apparently allow a mouse to chew through coating. Dealer charged over $640. To replace a $20 wire. Several e-mails and calls to Audi of America did not bring any action.

7 Wiring problem of the 2004 Audi A6

Failure Date: 04/30/2012

The contact owns a 2004 Audi A6. The contact stated that while driving 65 mph, that there was a failure in the electric harness under the passenger seat. The contact stated that he noticed a burning odor and then the power failed to move the seat. Upon further review, the contact discovered that the carpet under the seat was singed and had melted some plastic under the seat. The vehicle was taken to the contact’s personal mechanic where he was informed that the vehicle posed a safety hazard and should not be driven. The contact referenced NHTSA campaign id number: 04v133000 (electrical system) and contacted the dealer and the manufacturer to inquire of the recall campaign. The dealer and the manufacturer both advised the contact that the vehicle was not included in the recall campaign. The vehicle was not repaired. The failure and the current mileages were 94,648 updated 6/1/12 the cause of the fire was the shorting of the seat harness wiring under the passenger carpeting from movement and there was a bend/ kink in the harness when assembled and there was sub damage to adjacent wire harness. Updated 06/22/12.

See all problems of the 2004 Audi A6 🔎.

8 Wiring problem of the 2003 Audi A6

Failure Date: 07/12/2011

Brake light switch failure. Had it fixed, but the problems seems to be not in the brake light switch itself, but the wiring or sockets to the switch. Used same switch, but soon as car is turned off and turned back on, switch tends to work only for a couple of days and abs system shows up again with no brakes lights at all. Took to Audi dealer in which they said that there has been many problems within this system. But to totally fix the problem would run anywhere from 700. 00 to 1200 dollars on a 35. 00 to 45. 00 part. No brakes could lead to serious accidents not knowing that your brakes lights are actually out. Please please recall this issue on all Audi's.

See all problems of the 2003 Audi A6 🔎.

9 Wiring problem of the 2001 Audi A6

Failure Date: 05/16/2006

Substantial and prolonged rain flooded the cowling (holding reservoir of 4 gallons )located below the windshield of my Audi A6 2001 wagon. The drain at the bottom of the cowling had become clogged from bits of leaves, etc over the years. The cowling has no overflow drain and when the drain hole is clogged the water floods into the air vent and proceeds into the floor of the vehicle. The floor was flooded with 2 to 3 inches of water which proceed to damage the electronic control box for the entire car and the electronic "harness" which connects the control box to all of the devices located throughout the car. There were more than 12 cars in this one dealership suffering from this water damage issue. Audi has know of this problem for many years, but has failed to provide a recall and install an overflow hole higher up on the cowling to provide emergency relief. Repair bill was $3,500. Installation of an overflow hole would be an easy solution. Flooding shuts down entire electrical system and disables car.

See all problems of the 2001 Audi A6 🔎.

10 Wiring problem of the 1998 Audi A6

Failure Date: 05/31/2005

On may 31 2005 while driving smelled a burning odor. Then, smoke came from air vents, and smoke got worse. While speaking w/ 911 flames began to come from the air vents. Fire appeared to come from the air vents. Vehicle was operating normally before the fire broke out. There was no warning or codes to owner's knowledge. It was unknown what caused the fire. Owner believed it was an electrical fire. The fire department had a hard time extinguishing the fire, and were unsure as to the cause of the fire. A police report filed. Car was serviced regularly and records were available. The car was moved to a storage facility behind a gas station. The insurance company took possession of the vehicle, and considered it a total loss. Audi contacted the owner about an investigation. There were other recalls but nothing about this vehicle.

See all problems of the 1998 Audi A6 🔎.

11 Wiring problem of the 2000 Audi A6

Failure Date: 12/28/2004

04 v 133 000/wiring harness: consumer notice white smoke and a strong plastic burning odors coming from the left side of the dashboard. The vehicle was taken to the dealer. The dealer replaced the cluster module and repairs the burned wires. Within two month the problem has recurred. The consumer brought this recall information to the dealer attention. The dealer informed the consumer that was not the problem his vehicle was experiencing.

See all problems of the 2000 Audi A6 🔎.

12 Wiring problem of the 2001 Audi A6

Failure Date: 04/20/2004

Vehicle was full of smoke while getting into it while it was parked in the driveway all night. Consumer noticed black smoke film on the passenger's side rear window. Also, consumer opened the trunk and found it full of smoke. Consumer called the fire department. The fire marshall inspected the vehicle and believed that the fire was caused by an electrical short in the wiring harness.

13 Wiring problem of the 1996 Audi A6

Failure Date: 06/02/2002

"check engine" light remains on despite repeated visits to the dealer. First it was diagnosed with failed "vaccum line," but three months later the same "check engine" light came back. Corrective measures have since included the change oxygen sensors, fuel lines, and a new battery. The light is still permanently on, although no noticable drivability is affected.

See all problems of the 1996 Audi A6 🔎.

14 Wiring problem of the 1999 Audi A6

Failure Date: 01/21/2002

While driving my Audi 1999 A6 quattro 2. 8l my veh statred to smoke from the dashboard. I pulled off the road and with in 5 minutes my veh was totally destroyed. Thankfully there was no injuries.

See all problems of the 1999 Audi A6 🔎.

15 Wiring problem of the 1999 Audi A6

Failure Date: 03/19/2001

Consumer states red panel lighting is visible at night, mechanic discovered a short at cigar lighter housing and repaired.


Other Common Electrical System related problems of Audi A6


Safety Ratings of A6 Cars
Fuel Economy of A6 Vehicles
A6 Service Bulletins
A6 Safety Recalls
A6 Defect Investigations