2008 V6 4Runner SR5: To engage 4WD-4 high from 2WD, does the car have to be moving and be going at a minimum speed? What about if my 4Runner is parked in the parking lot while at work and a good amount of snow falls. When I leave work can I put the vehicle in 4H while parked before pulling out? If so, can it be done while the vehicle is in park or do you have to put the vehicle in neutral? Thanks.