Engine on and vehicle parked for 10 minutes with parking brake applied. leaving from a parked position with engine running, parking brake released, i shifted from park into drive but the vehicle showed i was still in park. could hear transmission shifting from p to d and to r but no information feedback. eventually i found that i could engage in reverse, neutral, park, and drive but only park was showing on display. i tried restarting the van but it didn't change. received errors for turning car off while in drive even though i was in park. i ended up driving with the car in "park" for about 100 miles to my destination. during the drive, there were lots of errors mainly the speedometer would not work ( had power but only said 0 mph). the tachometer remained at ~800rpm regardless of actual rpm. the gas gauge wouldn't work. numerous errors occurred with the active braking system (alarm only). the srs defective indicator remained on the entire drive. when i reached my destination (gas station), shifted to park. i turned the car off again and completely disconnected everything electrical and let the van sit for ~5 minutes. the errors cleared when i restarted and the speedometer/tachometer/gas/srs all worked but i had a new check engine light activated. the only message was still related to srs but the cel stayed on even after acknowledging the service message. after about ~200 miles and 3-4 restarts the cel cleared and everything worked properly for the remainder of our trip (about 1000 miles round trip). later, i was able to recreate a similar system malfunction when applying the parking brake. i've since been able to conjur random errors all related with safety systems and the park/drive/reverse scenario 50% of the time after applying and releasing the parking brake. the errors only happen after activation and release of the parking brake (so far to this day).