Hello, my elk is already having problems again: The display of the radio starts this week only after 2 minutes drive. As long as there is no sound there. No matter which buttons you press, it doesn’t start. Then it starts at once as if you had just switched it on. The ventilation etc. runs also during the display is off – I can’t set it of course. With the search function I found different errors of the radio, which were due to the battery. My battery is only 4 months old and can therefore be excluded (Varta). If someone had a tip for me? Could be a wackler, but where? and why only in the morning? At noon the display always went directly. For relevant information I am grateful Greeting of theWillinger V50 MJ 2006 EZ 2007, 279,500km, 2.0D