Hello I’ve had this audi a6 for a while it was going good but in the last months I’ve ran into som problems, the car randomly when I want to start it, every light on the dashboard comes on it gives crank but no start, sometimes I have to jumpstart it, I saw someone with the same problem on here. I’ve been told it’s a battery problem but I changed the battery about 2 weeks ago, other say relay, dynamo or fuse box but I don’t know

 

 

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Welcome,

The new battery may (just may ) need coding to the car, but 2007 is on the borderline for needing that done. 
Have you checked the alternator output, and have all battery and starter motor connections been checked? 
Kind regards,

Gareth. 

I coded the battery still the same problem, I think it’s the dynamo 

A3s of that era were prone to failure of the instrument cluster which gave similar symptoms to your car, so it is possible your A6 suffers in the same way. Audi will want a small fortune for a new cluster in England or a large fortune in Norway. The clusters can be repaired at much lower cost if you can find a suitable company. If you can not find a local company it would be worth investigating if ECU Testing, a company we often recommend here, would do it.

1 hour ago, cliffcoggin said:

A3s of that era were prone to failure of the instrument cluster which gave similar symptoms to your car, so it is possible your A6 suffers in the same way. Audi will want a small fortune for a new cluster in England or a large fortune in Norway. The clusters can be repaired at much lower cost if you can find a suitable company. If you can not find a local company it would be worth investigating if ECU Testing, a company we often recommend here, would do it.

What is the solution mate because at this moment I’m sitting in my car and it’s not starting because of this problem  

Sorry if I was unclear. If the instrument panel or cluster is faulty, which you can only discover by having it tested, it must be repaired or replaced.

On 3/5/2025 at 9:15 AM, Magnet said:

Welcome,

The new battery may (just may ) need coding to the car, but 2007 is on the borderline for needing that done. 
Have you checked the alternator output, and have all battery and starter motor connections been checked? 
Kind regards,

Gareth. 

Hi, do you mean that an older car, such as my 2005 A6 does not require the battery to be coded? Only asking as I need to replace the battery on mine.

I’m pretty confident it wouldn’t need to be.

32 minutes ago, Magnet said:

I’m pretty confident it wouldn’t need to be.

Thank you.

Mansour.

Have you come to a decision on this? Were the responses of any help?

On 3/14/2025 at 11:52 AM, cliffcoggin said:

Mansour.

Have you come to a decision on this? Were the responses of any help?

Hey it was the relay starter that was going bad, I opened the relay box and it was messed up it was rust on it, I cleaned it and heard a click hopped in the car and it started straight away after days of not starting, these cars are prone to have these electrical issues. But yeah what a journey it’s been did it all myself, felt weird working on my car for the first time but it was fun I learned a lot, I’m not trusting the mechanics anymore, the last one they told me to change the battery😂

Thanks for letting know.