Lexus RX450H Manual page 285

2-4. Using other driving systems

Dynamic radar cruise control can be set when

The shift lever is in the D or range 4 or higher of S has been selected.

Vehicle speed is above approximately 50 km/h (30 mph).

Accelerating after setting the vehicle speed
The vehicle can accelerate normally. After acceleration, the set speed
resumes.
However, during vehicle-to-vehicle distance control mode, the vehicle
speed may decrease below the set speed in order to maintain the distance to
the vehicle ahead.

Automatic cancelation of vehicle-to-vehicle distance control
Vehicle-to-vehicle distance control driving is automatically canceled in the
following situations.

Actual vehicle speed falls below approximately 40 km/h (25 mph).

VSC is activated.

The sensor cannot operate correctly because it is covered in some way.

The windshield wipers are operating at high speed. (when the wiper
switch is set to the AUTO mode or the high speed wiper operation posi-
tion).

When the snow mode is set.
If vehicle-to-vehicle distance control driving is automatically canceled for
any other reason, there may be a malfunction in the system. Contact any
authorized Lexus dealer or repairer, or another duly qualified and equipped
professional, and have your Lexus inspected.
262
RX450h_EE