audi a6 c6 estate Not starting

[Mansour]

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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[Magnet]

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.