A.d.d.; Shifting Procedure - Toyota 2007 Tundra Owner's Manual

07 04.26
(b) A.D.D. (automatic
disconnecting differential)
The A.D.D. can be engaged or disen-
gaged by the shifting operations de-
scribed in "(c) Shifting procedure".
You should drive in four−wheel drive for
at least 16 km (10 miles) each month.
This will assure that the front drive com-
ponents are lubricated.
240
(c) Shifting procedure
SHIFTING BETWEEN "2WD" AND "4H"
To shift from "2WD" to "4H", reduce the
vehicle speed to less than 100 km/h (62
mph) and turn the front drive control
switch knob fully clockwise.
When the ambient temperature is −15_C
(5.0_F) or lower, shifting can be performed
with the vehicle speed below 70 km/h (43
mph).
If the "4HI" (high speed four−wheel drive)
indicator light continues to blink when you
operate the front drive control switch knob
from the "2WD" to the "4H" position, this
reminds you that the transfer mode is not
securely in "4H" mode. Drive straight
ahead while accelerating or decelerating.
If the "4HI" (high speed four−wheel drive)
indicator light continues to blink and the
buzzer sounds when you operate the front
drive control switch knob from the "2WD"
to the "4H" position, this reminds you that
the transfer mode is not in "4H" mode.
Stop the vehicle or reduce the vehicle
speed to less than 100 km/h (62 mph).
(When the ambient temperature is −15_C
(5.0_F) or lower, it needs to be reduced
to below 70 km/h (43 mph).) Operate the
switch knob again.
2007 TUNDRA from Jul. '07 Prod. (OM34463U)
CAUTION
Never operate the front drive control
switch knob if the wheels are slip-
ping. Stop the slipping or spinning
before operating.
To shift from "4H" to "2WD", reduce the
vehicle speed to less than 100 km/h (62
mph) and turn the front drive control
switch knob fully counterclockwise.
When you operate the front drive control
switch knob from "4H" to "2WD" with the
vehicle speed at 100 km/h (62 mph) or
higher, the "4HI" indicator light continues
to blink and buzzer sounds. When the
switch knob is returned from "2WD" to
"4H", the indicator light turns off and the
buzzer stops sounding.
If the "4HI" (high speed four−wheel drive)
indicator light continues to blink when you
operate the front drive control switch knob
from the "4H" to the "2WD" position, this
reminds you that the transfer mode is not
securely in "2WD" mode. Drive straight
ahead while accelerating or decelerating,
or drive forward or backward in a short
distance.