Toyota TUNDRA Manual page 189

● Always place wheel blocks under both the vehicle's and the trailer's
wheels when parking. Apply the parking brake firmly, and put the
transmission in P. Avoid parking on a slope, but if unavoidable, do
so only after performing the following:
1
Apply the brakes and keep them applied.
2
Have someone place wheel blocks under both the vehicle's and
trailer's wheels.
3
When the wheel blocks are in place, release the brakes slowly
until the blocks absorb the load.
4
Apply the parking brake firmly.
5
Shift into P and turn off the engine.
● When restarting after parking on a slope:
1
With the transmission in P, start the engine. Be sure to keep the
brake pedal pressed.
2
Shift into D or R (if reversing).
3
Release the parking brake and brake pedal, and slowly pull or
back away from the wheel blocks. Stop and apply the brakes.
4
Have someone retrieve the blocks.
4-1. Before driving
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