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son, there may be a malfunction in the sys-
tem. Contact your Lexus dealer.
Automatic cancelation of constant
■
speed control mode
Constant speed control mode is automati-
cally canceled in the following situations:
●
Actual vehicle speed is more than
approximately 16 km/h (10 mph) below
the set vehicle speed.
Actual vehicle speed falls below approxi-
●
mately 40 km/h (25 mph).
●
VSC is activated.
●
TRC is activated for a period of time.
When the VSC or TRC system is turned
●
off.
●
Pre-collision braking is activated.
If constant speed control mode is automati-
cally canceled for any other reason, there
may be a malfunction in the system. Con-
tact your Lexus dealer.
■
Brake system operation sound
If the brakes are applied automatically while
the vehicle is in vehicle-to-vehicle distance
control mode, a brake system operation
sound may be heard. This does not indicate
a malfunction.
If "Radar Cruise Control Unavailable" is
■
shown on the multi-information display
The radar cruise control system cannot be
used temporarily. Use the system when it
becomes available again.
■
Warning messages and buzzers for
dynamic radar cruise control
Warning messages and buzzers are used to
indicate a system malfunction or to inform
the driver of the need for caution while driv-
ing. If a warning message is shown on the
multi-information display, read the message
and follow the instructions.
When the sensor may not be correctly
■
detecting the vehicle ahead
In the case of the following and depending
on the conditions, operate the brake pedal
when deceleration of the system is insuffi-
cient or operate the accelerator pedal
4-5. Using the driving support systems
when acceleration is required.
As the sensor may not be able to correctly
detect these types of vehicles, the approach
warning (P.245) may not be activated.
●
Vehicles that cut in suddenly
Vehicles traveling at low speeds
●
●
Vehicles that are not moving in the same
lane
●
Vehicles with small rear ends (trailers
with no load on board, etc.)
●
Motorcycles traveling in the same lane
When water or snow thrown up by the
●
surrounding vehicles hinders the detect-
ing of the sensor
When your vehicle is pointing upwards
●
(caused by a heavy load in the luggage
compartment, etc.)
●
Preceding vehicle has an extremely high
ground clearance
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