Touareg: 2014 V6 TDI
Join Date: Mar 2015
Second Vehicle: is not a VW
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850RNS Randomly won't start.
Sometimes (about 10% of the time) when I start my treg, the RNS stays at a black screen and won't start. Sometimes it eventually will turn on, but only after 30+ minutes of driving, if at all. When it's in this state, none of the buttons respond to inputs at all (5 button reboot does nothing). Killing the ignition and then restarting everything doesn't help. The display in the instrument cluster still works, but if I select Navigation, Phone, or Media I just get a "System is Starting" message. Most of the time the system starts just fine with no issues.
I've only had the car for a few weeks, but I *think* it might be heat related, as it seems to happen on hot days, but it doesn't happen on every hot day, and yesterday was the hottest day yet since I bought the car and it was parked with the dash roasting in the sun all day (was doing this to test my hypothesis) and it started just fine at 3pm, so I'm really not sure.
Anyone have any suggestions? Similar experiences?
I plan to replace any applicable fuses, but I've never seen a problem like this from a bad fuse so I expect that to be fruitless.