Honda Pilot Owner's Manual page 441

Vehicle Stability Assist (VSA ), aka Electronic Stability Control (ESC), System
VSA and Tire Sizes
Driving with varying tire or wheel
sizes may cause the VSA to
malfunction. When replacing tires,
make sure they are of the same size
and type as your original tires (see
page 506 ).
If you install winter tires, make sure
they are the same size as those that
were originally supplied with your
vehicle. Exercise the same caution
during winter driving as you would if
your vehicle was not equipped with
VSA.
Hill Start Assist
Your vehicle is equipped with a hill
start assist feature to help prevent
the vehicle from rolling on steep
inclines as you move your foot from
the brake pedal to the accelerator.
This feature operates for up to 1.5
seconds in any drive gear position
(when faced uphill) or in reverse
(when faced downhill). This feature
requires that the vehicle has come to
a complete stop before it can work.
Hill start assist may not hold a
heavily loaded vehicle, such as when
your vehicle is connected to a trailer,
or prevent your vehicle from rolling
downhill on a very steep or slippery
slope.
2009 Pilot
437