One problem related to car accelerates on its own has been reported for the 2004 Lexus LS. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Lexus LS based on all problems reported for the 2004 LS.
Unintended acceleration. As I was parking the vehicle suddenly accelerated and jumped the curb and ran into the building. I tried to back off the building and could not stop the racing engine. The vehicle shot backwards even though I was on the brake. It went through some hedges over a rise and crossed the street where the rear hit a palm tree and collapsed the trunk. Both the front and rear were severely damaged. No air bags deployed.