Diesel Engine problems of the 2008 Jeep Grand Cherokee

Vehicle has had a history of unresolved electrical issues beginning at the time of purchase. In 2009, the ignition switch began to fail and the key fob was replaced. Due to a VIN number issue with a replacement program, Chrysler refused to replace the key assemblies though they were replacing identical assemblies on other vehicles that used the same modules. Several "reprogrammings" have been conducted to clear problems. Specific issues include: 1. Erratic behavior of electrical system that stems from the operation of the ignition switch. For example the engine will start but the vehicle will be impossible to shift out of park and the radio/navigation will not work until you jiggle the ignition switch and key fob. 2. Chronic failure of the electronic throttle. You can be driving along at any speed and you will lose throttle control. This has caused several near miss accidents. The problem is acknowledged by a check engine light and lighting of an specific idiot light on the dash. However, the lack of throttle response is very dangerous and can be restored by only stopping the vehicle and shutting down the engine several times to reset the electronics. 3. Chronic failure of the dealership to address proper correction of the electrical problems. Vehicle was covered by a full warranty and an extended warranty but these problems were never repaired. Due to sporadic and random nature of the systems faults, the dealership refuses to make repairs. 4. Dealerships unable to clear check engine light and blame issues on the fact this unit has a diesel engine. Local waterway car wash is refusing to wash these vehicles due to rapid and unattended acceleration issues which have caused accidents at their car washes. This problem can be documented by calling them by telephone. They consider the vehicles to be a safety risk. Please help!.