Toyota Tacoma 2012 Owner's Manual page 202

2-4. Using other driving systems
To disable VSC, Trailer Sway Control and TRAC (2WD models
and 2WD mode on 4WD models)
If the vehicle gets stuck in fresh snow or mud, VSC, Trailer Sway
Control and TRAC may reduce power from the engine to the wheels.
You may need to turn the system off to enable you to rock the vehicle
in order to free it.
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Turning off TRAC, VSC and Trailer Sway Control
202
Press and hold the VSC OFF
switch for more than 3 seconds
while the vehicle is stopped to
turn off TRAC, VSC and Trailer
Sway Control.
The VSC OFF and TRAC OFF
indicators will come on.
Push the switch again to turn both
systems back on.