Dash electronics on the fritz...Any ideas???

[Enzodog]

My 09 X5 3.0 dash went out during 200 mile drive last week with frigid cold exterior temperatures in the teens. The nav, and radio went black while driving. Stopped at a rest stop for 20 minutes, got back in and the nav and radio came on on the restart. Got back on highway and it went back out five minutes later while driving. The next few days the nav and radio would still act up speratically. Now my wife says the seatbelt warning keeps sounding. Dealer found no codes in the computer. Dealer kept it for three days and could not replicate. Anyone experience the same or have any ideas? Thanks.

[TerminatorX5]

alternator (voltage regulator) is acting up. have it checked... battery could be too...

[AaronSD]

Similar issues here with 08 4.8. It was low voltage at first, cured by a weekly trickle charge session and now just recently the battery. Because I had complained of these issues prior to 50k mile initial warranty, dealer had BMW replace battery under good will conditions which has cured l issues.

[Enzodog]

Thank you for the suggestions.

[ard]

MOST importantly, take a VIDEO or picture of the failure when it occurs.

Right now, the dealer has essentially documented "there is no problem"...until they agree there was a failure, there is nothing wrong with he car

GL

A