vbat drops to 7 volts only when hot.

[panoramix]

While driving normally for about 30 to 40 minutes, vbat starts to drop and in a matter of seconds drops to 7 something volts. Shutting off fuel pump, edis module, lc-1, etc. There's no way to start the car until after some minutes of "letting it cool down".
Then works normally for some time until it starts all over again. FP relay (on the relay board) get REALLY hot for my taste, all others seems normal.

I need some help with this, it's driving me insane. Here are some screenshots of how it looks like in the log:






thanks in advance.

[Matt Cramer]

Ok, first question - is the voltage REALLY dropping to 7 volts, or does the MS just think it is? I'd check the voltage with a volt meter and see what the voltage is actually doing. This could simply be a busted voltage regulator.

[panoramix]

Ok, I'll get back to you on that one as soon as this happens again... thanks.