Toyota FORTUNER 2021 Owner's Manual page 263

Automatic cancelation of constant speed control mode
Constant speed control mode is automatically canceled in the following situa-
tions:
Actual vehicle speed is more than approximately 16 km/h (10 mph) below
the set vehicle speed.
Actual vehicle speed falls below approximately 30 km/h (20 mph).
VSC is activated.
TRC/A-TRC is activated for a period of time.
When the VSC or TRC/A-TRC system is turned off.
When the brake control or output restriction control of a driving support sys-
tem operates.
(For example: Pre-Collision System, Drive-Start Control)
Switching the transfer mode is not completed within 5 seconds while the
cruise control system is on.
If constant speed control mode is automatically canceled for any reasons
other than the above, there may be a malfunction in the system. Contact your
Toyota dealer.
The Dynamic Radar Cruise Control with Road Sign Assist may not oper-
ate properly when
As the Dynamic Radar Cruise Control with Road Sign Assist may not oper-
ate properly in conditions in which RSA may not operate or detect correctly
(P. 246), when using this function, make sure to check the speed limit
sign displayed.
In the following situations, the set speed may not be changed to the recog-
nized speed limit by pushing the lever up or down.
If speed limit information is not available
When the recognized speed limit is the same as the set speed
When the recognized speed limit is outside of the speed range that the
dynamic radar cruise control system can operate
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
Warning messages and buzzers are used to indicate a system malfunction or
to inform the driver of the need for caution while driving. If a warning message
is shown on the multi-information display, read the message and follow the
instructions. (P. 220, 439)
4-5. Using the driving support systems
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