Okey guys. I would like to have some help from you experienced ones.
About 3 weeks ago, when I started my engine, this happened:
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This only happens when you have the ignition or the engine on. The date and the clock resets to 1.1.1998 and 00.00. Not only what you see on the film, but also the AC and the radio light is blinking. And pretty much every red light in the car too. It's like that for about 5-8 minutes, and then it stops. But then for example the temp is not shown, or the fuel measurer is on zero.
I went to Audi the other day to let them have a quick look, and they said it was the battery. Then I said, how on earth can it be the battery, when everything else on the car is working fine. THey said I should load the battery and then if that should work, I should come in for a error-search at Audi, and only that would cost me 1500 swedish crowns, which is for me expensive!
I was charging my battery the whle day yesterday. Then when I started the engine today, everything worked fine.... until after I stopped at a gas-station, it all returned again.
So now to my question. What do you think is wrong? Can I somehow fix it myself?
Apriciating any answers.