I just bought a Grand Cherokee 2011 and when i am traveling on a bad road or passing over a speed bump i hear a sound like a short circuit then the radio goes off, even the radio clock, and the dashboard lights dim for 2 seconds, then the radio goes on until i pass over another bump and happend again...and again with the short circuit all over. I am taking the SUV to the dealer bit i wanted you opinion before i talk to the service people.