mine failed after the bump.. it was plaing CD and next thing was err3 on display. I guess VX has a very stiff ride and CD changer has hard time playing on all those bumpy roads. I've even attempted to re-set whole electrical system by unplugging battery for 10 min ? it did not work for me but maybe you can try that... just in case.

BTW, new unit that they've installed after several hours it is getting hot and skips also ... go figure ?