Toyota 2009 4runner Owner's Manual page 202

2-4. Using other driving systems
When the AUTO LSD system is operating
If the brake system overheats
n
The system will cease operation and a buzzer will sound to alert the driver.
Stop the vehicle in a safe place. (There is no problem with continuing normal
driving.)
CAUTION
To avoid an accident
n
Do not use the AUTO LSD system in conditions other than the above.
l
A much greater steering effort and more careful cornering control will be
required.
Do not drive with the AUTO LSD system continuously turned on.
l
176
If the rear wheels spin, the slip
indicator flashes to indicate that
the AUTO LSD system have
been controlled the spinning of
the rear wheels.