Toyota 4Runner - Sounds and Vibrations Caused by the Active Traction Control System; The Active Traction Control System May Not Operate Effectively When; When the Active Traction Control System Is Operating; When the Rear Differential Is Locked (Vehicles with a Rear Differential Lock System)

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2-4. Using other driving systems
2
When driving
4RUNNER_U
When the active traction control system is operating
If all wheels spin, the slip indica-
tor flashes to indicate that the
active traction control system
has been engaged.
CTH24AS047
n When the rear differential is locked (vehicles with a rear differential
lock system)
The active traction control system is activated only when vehicle speed is
less than 4 mph (6 km/h).
n Sounds and vibrations caused by the active traction control system
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. This may
occur when the system is operating.
n If the brake system overheats
The system will cease operation and a buzzer will sound to alert the driver.
At this time, the “A-TRAC” indicator will go off and the “TRAC OFF (TRC
OFF)” indicator will come on. 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
n The active traction control system may not operate effectively when
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.