Hill-Start Assist Control - Lexus RX450H Manual

2-4. Using other driving systems

Hill-start assist control

Hill-start assist control helps to prevent the vehicle from rolling back-
wards when starting on an incline or slippery slope.

Hill-start assist control can be operated when

The shift lever is in a position other than P.

The parking brake is not applied.

The accelerator pedal is not depressed.


Hill-start assist control


While hill-start assist control is operating, the brakes remain automati-
cally applied after the driver releases the brake pedal. The stop lights and
the high mounted stoplight turn on.

Hill-start assist control operates for about 2 seconds after the brake pedal
is released.

If the slip indicator does not flash and the buzzer does not sound when
the brake pedal is further depressed, slightly reduce the pressure on the
brake pedal (do not allow the vehicle to roll backward) and then firmly
depress it again. If the system still does not operate, check if the operat-
ing conditions explained above have been met.
RX450h_EE
To engage hill-start assist
control, further depress the
brake pedal when the vehicle
is stopped completely.
A buzzer will sound once to
indicate the system is acti-
vated. The slip indicator will
also start flashing.
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