I have an 2007 audi a6 and whenever it is cold in the morning the car takes extra effort to start but it doesn't start right away it shuts off midway starting and ill have to start it again and it will run fine. This issue is only in weather below freezing or at least 32 degrees Fahrenheit. Sometimes it will take more then two tries to start the car and when it doesn't start it just stays at the battery stage since the key was already turned. I am not sure what could be the issue i have new spark plugs new coolant flushed as well and i never checked the battery manually i am assuming it could be the battery but i have had no problems starting the car in ok weather. Any ideas what could be making the car not start the first two or three times in cold weather? It runs fine once it starts though.

 

It's either fuel or spark. Cold weather requires more cranking power and you have a 5+ year old battery, so I would take it to Autozone or equivalent and ask them to test the battery and charging system. The fact that it turns over a couple times also sounds like it is not adjusting to the cold (like choking a carburettor engine) and the mixture richens by the second or third cranking and it starts. You might also check for MIL codes, but I doubt there would be any.

 

Could be related to faulty temp sensor, if the ecu doesn't know it's that cold then it can't fuel accordingly. If the car starts fine in warmer conditions then that could be worth a look.

Check for codes.

Also make sure you're not putting cheap low octane fuel in.

 

I have always put in 93 grade and my sparks are changed less than 5000 miles ago and car started today then i shift it from P to R it turned off... it takes extra cranking like you mentions i will look at the battery and the temp sensor on the vehicle next week thank you for you info is it possible i make a youtube video and post the problem for a better understanding guys let me know thanks again for all the help you guys are the best!

 

After doing some research i found this it describes my problem lol
http://uberlame.com/a6_tsb/Engine/Co...hicle%20is.pdf

 

Sounds like you want to get it back to an audi dealer for some recall work...

 

Paul my car has 85000 miles pretty much you think the dealer will fix the problem even if the car not under warranty I don't know about this stuff much. Would appreciate any help thanks

 

so i have to pay to update for this ecm or would audi cover it im at 94k now

 

I am glad that the TSB library that I set up was a help. Unfortunately, you will have to pay for the TSB service.

 

hey any idea how much they charge can my indie shop do it as well because he works for the dealer ship which is audi and has his own shop just has a lower rate of labor only 25% off. And i see you have lots of nice upgrade to your car the 06 A6 4.2L. I was wondering if you can tell me what did you do all by yourself i also have koni fsds and i am getting the hr springs and a new front control arm kit from meyle hd on it this thursday. i was curious about the solar sunroof rear heated seats and adaptive headlights i have 3.2L A6 2007 and i don't have the adaptive lights or the rear heated seats so fairly my question is can i convert it to that would love any help and post a picture of your car here is mine!

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