I would estimate that 98% of the time the problem is electrical, BUT, if you park on an incline then the car can get stuck in PARK and have nothing to do with switches.


When you put the transmission into PARK, a small pin slips into a slot to lock the transmission in place. It's kind of like throwing a deadbolt on a door. If you are parked on a flat surface then no problem, but if you are parked on an incline then it's different. When you are parked on an incline and you put the car into PARK, the car will usually roll a couple inches until the pin engages the slot to lock the transmission. But now that pin is under pressure because the car wants to roll away, it's like if someone was leaning a door. It's much harder to open a deadbolt when comeone is leaning on the door than when they are not leaning on the door. If the car is still moving when you put it into PARK, then there is enough pressure to bend the pin which can make the situation even worse.

IF you park on an incline......
1. come to a complete stop.
2. set the emergency brake.
3. put the car in neutral and take your foot off the brakes to make sure the emergency brake is holding
4. put the car into PARK

when you are ready to leave....
Put the car into drive (or reverse) first, then release the emergency brake.

Just another tidbit of info to add the reservoir.
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Nathan Valles, Black 855R, Tint