Toyota 2013 Avalon Hybrid Owner's Manual page 220

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BSM (Blind Spot Monitor) (if equipped)
→P. 251
When the TRAC/VSC/ABS/hill-start assist control systems are
operating
The slip indicator light will flash
while the
start assist control systems are
operating.
Disabling the TRAC system
If the vehicle gets stuck in mud, dirt or snow, the TRAC systems may
reduce power from the hybrid system to the wheels. Pressing the
switch to turn the system off may make it easier for you to rock the
vehicle in order to free it.
To turn the TRAC system off,
quickly press and release the
switch.
The "TRAC OFF" indicator light
should come on and message will
be shown on the multi-information
display.
Press the switch again to turn the
system back on.
AVALON_HV_U (OM41451U)
4-5. Using the driving support systems
TRAC/VSC/ABS/hill-
239
4