The contact owns a 2016 Tesla Model S. The contact stated that after releasing the brake pedal while parking, the vehicle suddenly experienced unintended acceleration and lurched forward crashing into the rear of a second vehicle. During the incident, no injuries were reported and no police report was taken. The cause of the failure was not determined. The manufacturer was notified of the incident. The contact indicated that prior to the incident a chip was installed due to a navigation problem. Also, the control panel display screen had a malfunction and audible warnings such as turn signals were not available. The failure mileage was 25,000