Lexus 2013 IS250 Owner's Manual page 276

274
4-5. Using the driving support systems

Operating conditions of hill-start assist control
When the following four conditions are met, the hill-start assist control will oper-
ate:

The shift lever is in a position other than P or N (when starting off forward/
backward on an upward incline).

The vehicle is stopped.

The accelerator pedal is not depressed.

The parking brake is not engaged.

Automatic system cancelation of hill-start assist control
The hill-start assist control will turn off in any of the following situations:

The shift lever is moved to P or N.

The accelerator pedal is depressed.

The parking brake is engaged.

Approximately 2 seconds elapse after the brake pedal is released.

Operating conditions of emergency brake signal
When the following three conditions are met, the emergency brake signal will
operate:

The emergency flashers are off.

Actual vehicle speed is over 55 km/h (35 mph).

The brake pedal is depressed in a manner that cause the system to judge from
the vehicle deceleration that this is a sudden braking operation.

Automatic system cancelation of emergency brake signal
The emergency brake signal will turn off in any of the following situations:

The emergency flashers are turned on.

The brake pedal is released.

The system judges from the vehicle deceleration that is not a sudden braking
operation.
IS250_EE(OM53B11E)