Other information:
In automatic mode, this system applies the parking brake when the engine is
switched off and releases it when the vehicle moves off.
At any time, with the engine running:
to apply the parking brake, briefly pull the control lever;
to release it, briefly push the control lever while pressing the brake
pedal...
Load distribution
Distribute the load in the trailer so that the heaviest items are as
close as possible to the axle, and the nose weight approaches the maximum
permitted without exceeding it.
Air density decreases with altitude, thus reducing engine performance...