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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.
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
when acceleration is required.
As the sensor may not be able to correctly
detect these types of vehicles, the approach
warning (P.221) 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-
RC350-RC300_OM_General_OM24884E
4-5. Using the driving support systems
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
Conditions under which the vehi-
■
cle-to-vehicle distance control mode
may not function correctly
In the case of the following conditions,
operate the brake pedal (or accelerator
pedal, depending on the situation) as nec-
essary.
As the sensor may not be able to correctly
detect vehicles ahead, the system may not
operate properly.
When the road curves or when the lanes
●
are narrow
When steering wheel operation or your
●
position in the lane is unstable
223
4
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