Lexus LS 500h 2019, Owner'S Manual

Page: 326 / 607

324 4-5. Using the driving support systems
other than the above, there may be a mal-
function in the system. 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 30 km/h (20 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 reasons other than
the above, there may be a malfunction in the
system. Contact your Lexus dealer.
■
Situations in which the curve speed
reduction function may not operate
(vehicles with Lexus Safety A)
In situations such as the following, the curve
speed reduction function may not operate:
●
When the vehicle is being driven around
a gentle curve
●
When the accelerator pedal is being
depressed
●
When the vehicle is being driven around
an extremely short curve
■
Brake operation
A brake operation sound may be heard and
the brake pedal response may change, but
these are not malfunctions.
■
Warning messages and buzzers for
dynamic radar cruise control with
full-speed range
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.(

P.265, 272,
531)
■
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.321) 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
LS500h_OM_General_OM50J66E