same problem here folks - 04 RX300 it happens ONLY when going over railroad tracks, or hitting a bump in the road (ABS, ACS, Brake, TPM) basically all the lights on the right dash cluster come on. Your turn the car off and on again and ALL lights go off until we hit a bump again.
Seems something maybe loose, but where do you start. from the items above looks to be an issue with others as well.
thanks