Toyota 2009 Tacoma User Manual page 173

When the rear differential is locked (vehicles with the rear differential
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lock system)
The active traction control system is activated only when the vehicle speed
is less than 3 mph (6 km/h).
Sounds and vibrations caused by the active traction control system
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l A sound may be heard from the engine compartment when the engine is
started or just after the vehicle begins to move. This sound does not indi-
cate that a malfunction has occurred in the system.
l Vibrations may be felt through the vehicle body and steering. It may
occur when the system is operating.
n If the brake system overheats
The system will cease operation, a buzzer will sound and A-TRAC indicator
blink to alert the driver. Stop the vehicle in a safe place. (There is no problem
with continuing normal driving.)
The system will be automatically restored after a short time.
CAUTION
The active traction control system may not operate effectively when
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Directional control and power may not be achievable while driving on slip-
pery road surfaces, even if the active traction control system is operating.
Do not drive the vehicle in conditions where stability and power may be lost.
2-4. Using other driving systems
2
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