Toyota 2011 Tundra, Owner'S Manual, Page: 246 / 753

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2-4. Using other driving systems
n Automatic cruise control cancellation
The set speed is automatically cancelled in any of the following situations.
l
Actual vehicle speed falls more than approximately 10 mph (16 km/h)
below the preset vehicle speed.
At this time, the memorized set speed is not retained.
l
Actual vehicle speed is below approximately 25 mph (40 km/h).
l VSC is activated.
n If the cruise control indicator flashes
Press the ON-OFF button to turn the cruise control off, and then reactivate
the system.
If the cruise control speed cannot be set or if the cruise control cancels
immediately after being activated, there may be a malfunction in the cruise
control system. Have the vehicle inspected by your Toyota dealer.
CAUTION
n To avoid operating the cruise control by mistake
Keep the ON-OFF button off when not in use.
n Situations unsuitable for cruise control
Do not use cruise control in any of the following situations.
Doing so may result in control of the vehicle being lost and could cause an
accident resulting in death or serious injury.
l In heavy traffic
l On roads with sharp bends
l On winding roads
l
On slippery roads, such as those covered with rain, ice or snow
l On steep hills
Vehicle speed may exceed the set speed when driving down a steep hill.
l When towing a trailer or emergency towing