Isuzu D-MAX 2020 Owner's And Driver's Manual page 451

Hill descent control is a system that assists in driving stability by controlling the brakes
to maintain a consistently low speed when descending down steep slopes or on
slippery off-road surfaces in which only the engine brake itself is insufficient. When the
hill descent control is in operation, it is possible to adjust vehicle speed by depressing
the accelerator pedal or the brake pedal.
CAUTION
• When the rear differential lock is operating (models with rear differential lock),
the hill descent control does not operate.
• Do not overly rely on the hill descent control system. When descending on
extremely steep slopes, frozen road surfaces, or muddy roads, or depending
on cargo load, it may be difficult to maintain a constant speed. Because an
accident may unexpectedly occur in such situations, depress the brake pedal as
necessary.
• The temperature of the brake system may rise when used repeatedly for
extended periods of time, resulting in the hill descent control being deactivated.
NOTE
• The following may occur during hill descent control operation, but do not
indicate an abnormality.
- Motor operation sounds, etc. can be heard from the engine room during
operation
- When the brake pedal is depressed, there is more resistance than normal or
pedal feeling is strange
CONTROLS AND INSTRUMENTS
Hill Descent Control
4-175