My 05 LS430 ML nav/radio resets when traction control engages, ABS engages, or when I hit the brake to come out of cruise control. The check engine, VSC, and ABS dash lights come on then some of the electrical functions reset. The nav screen goes black and then immediately comes back on and is back to normal in a few seconds. Everything else seems to be working fine except for the few seconds that the features reset. Anyone have any ideas? I replaced the battery when I bought it 3yrs ago and I have charged it to full. Should I try replacing the alternator or just bring it to the shop?