how to change a ecu on an AUDI A6 Quattro

Asked by Feb 15, 2012 at 04:33 PM about the Audi A6

Question type: Maintenance & Repair

2 Answers

235

The ECU is inside a black plastic box, which is screwed onto the frame of the car inside the area where the battery and brake fluid resevoir are located. This area, which is under the under, has a plastic cover over top of it which must first be removed. Once you have located the ECU weatherproof housing, remove the 3 or 4 screws that hold the cover on - very easy to do. Once removed, you can identify the ECU easily inside the box. There a screws holding this down as well as it being plugged in. Remove all of these attachments and replace the unit with your new one. Reverse these steps to finish the job. Done!

Great answer and Thank You for Your time. Is this information, however, accurate for the 1997 AFC engine? I am dealing with a no start after a battery drain. I am dealing with no spark to My ignition coils as well as No fuel to injectors, however I have fuel to the rail and the filter. Very confused. I'm looking for an open or a double ground anywhere and believe it could be the relationship between ECU and ECM however I'm not sure. I'm rebuilding after a head gasket job. I checked timing but not confident it's there and I'm hearing the car want to turn over but no spark or fuel. I'd like to think this was electrical as I'd done near a dozen timing belt changes on these cars. Please help!

Your Answer

Add photo

Related Questions

Search Audi A6 Questions

Audi A6 Experts

#1 JRKPerformax
JRKPerformax
Reputation 250
#2 Tom Demyan
Tom Demyan
Reputation 220
#3 COMETGUY61
COMETGUY61
Reputation 190
View All

Related Models For Sale

Used Audi A4
292 Great Deals out of 10,503 listings starting at $1,200
Used BMW 5 Series
466 Great Deals out of 15,434 listings starting at $500
Used Audi A8
45 Great Deals out of 2,035 listings starting at $4,300
Used Audi A7
29 Great Deals out of 1,489 listings starting at $19,995
Used Audi A5
94 Great Deals out of 4,038 listings starting at $8,690
Used Mercedes-Benz E-Class
358 Great Deals out of 19,351 listings starting at $1,500
Used BMW 3 Series
939 Great Deals out of 30,253 listings starting at $1,000
Used Audi S6
7 Great Deals out of 417 listings starting at $4,695
Used Audi S4
46 Great Deals out of 1,635 listings starting at $4,250
Used Audi Q5
118 Great Deals out of 6,825 listings starting at $8,995
Used Mercedes-Benz C-Class
428 Great Deals out of 25,477 listings starting at $2,000
Used Audi Q7
83 Great Deals out of 4,401 listings starting at $6,850
Used BMW 7 Series
165 Great Deals out of 5,956 listings starting at $2,999
Used Lexus GS 350
103 Great Deals out of 3,798 listings starting at $6,990
Used Dodge Charger
454 Great Deals out of 29,317 listings starting at $2,300

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.