2017 TOYOTA 4RUNNER Owners Manual

2494-5. Using the driving support systems
4
Driving
4RUNNER (U)_(OM35B37U)
CAUTION
■To avoid an accident
● Do not use the rear differential lock system except when wheel spinning
occurs in a ditch or on a slippery or rugged surface. Large steering effort
and careful cornering control will be required.
● Do not lock the rear differential until the wheels have stopped spinning.
Otherwise, the vehicle may move in an unexpected direction when the dif-
ferential lock is engaged, resulting in an accident. This may also lead to
possible damage to rear differential lock component parts.
● Do not drive over 5 mph (8 km/h) when the rear differential is locked.
● Do not keep driving with the rear differential lock switch on.

2504-5. Using the driving support systems
4RUNNER (U)_(OM35B37U)■
Activating the system
The system will activate when
●
The vehicle is traveling under 15 mph (25 km/h) with the acceler-
ator and brake pedals released.
● Part-time 4WD models: The fron t-wheel drive control lever or
switch is in L4.
Full-time 4WD models: The four-wheel drive control switch is in
L4L.
● The rear differential is unlocked (if equipped).
Press the “DAC” switch.
The downhill assist control sys-
tem indicator will come on to
indicate that the downhill assist
control system is activated.
Pressing the switch again turns
the system off.
Downhill assist control system∗
∗: If equipped
With the downhill assist control system, the vehicle is able to
descend a steep hill while mainta ining a constant low speed of
about 3 mph (5 km/h) without brake pedal operation.

2514-5. Using the driving support systems
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Driving
4RUNNER (U)_(OM35B37U)
The slip indicator will flash to indi-
cate that the downhill assist con-
trol system is operating, and the
stop lights and high mounted
stoplight will turn on.
■Operating tips
The system will operate when the shift lever is in any position other than P.
However, to make effective use of the system it is recommended that the shift
lever be shifted to the “2” or “1” range of S.
■ If the downhill assist control system indicator flashes
●In the following situations, the indicator flashes and the system will not oper-
ate:
• The transfer mode is not in L4 (part-time 4WD models) or L4L (full-time
4WD models).
• The rear differential is locked.
• The brake system overheats. The system will cease operation and a buzzer will sound to alert the
driver. At this time, the “TRAC OFF” indicator will come on. Stop the vehi-
cle in a safe place. Refrain from using the system until the indicator stops
flashing and stays on. (There is no problem with continuing normal driv\
-
ing.)
● In the following situations, the indicator flashes to alert the driver, but the
system will still operate:
• The shift lever is in N. (Engine braking will not occur.)
• The “DAC” switch is turned off while the system is operating.
The system will gradually ceases operation. The indicator will flash during
operation, and then go off when the system is fully off.
While the downhill assist control system is operating

2524-5. Using the driving support systems
4RUNNER (U)_(OM35B37U)■
System malfunction
In case of a system malfunction, the following may occur:
●The downhill assist control system indicator flashes in a situation other than
those listed above.
● The downhill assist control system indicator does not come on when the
engine switch is turned to the “ON” position (vehicles without a smart key
system) or the engine switch is turned to IGNITION ON mode (vehicles with
a smart key system).
Have your vehicle inspected by your Toyota dealer.
CAUTION
■ Conditions which may affect the downhill assist control system opera-
tion
● Do not rely too heavily on the downhill assist control system. On extremely
steep inclines, icy surfaces or muddy roads, the vehicle may slip and the
system may not be able to maintain the constant low vehicle speed of
about 3 mph (5 km/h), leading to an accident causing death or serious
injury.
● Do not shift the shift lever to R while driving forward, or to D while driving
backward. Doing so may cause the wheels to lock up, leading to an acci-
dent causing death or serious injury. In addition, excessive stress will be
applied to the automatic transmission, possibly resulting in damage.

2534-5. Using the driving support systems
4
Driving
4RUNNER (U)_(OM35B37U)■
Crawl Control switch
Crawl Control∗
∗: If equipped
Allows travel on extremely rough o
ff-road surfaces at a fixed low
speed without pressing the acceler ator or brake pedal. Mini-
mizes loss of traction or vehicle slip when driving on slippery
road surfaces, allowing for stable driving.
“ON/OFF” switch
The Crawl Control indicator comes on and the slip indicator flashes when\
operating.
Speed selector dial
Turn the dial clockwise to increase the speed and counterclockwise to
decrease the speed.
Crawl Control indicator
Slip indicator
1
2
3
4

2544-5. Using the driving support systems
4RUNNER (U)_(OM35B37U)■
Speed modes
The following table shows
some typical terrains and the
recommended speed modes.
■
Crawl Control can be operated when
●The engine is running.
● The shift lever is in any position other than P or N.
● The front-wheel drive control lever or switch is in L4.
● The driver’s door is closed.
■ Crawl Control is temporarily canceled when
Vehicle speed exceeds 15 mph (25 km/h). The Crawl Control indicator
flashes until the vehicle speed is reduced.
ModeRoad condition
L (Low)Rock, mogul (downhill) and gravel
(downhill)
Between L and M
Mogul (uphill)
M (Medium)
Snow, mud, gravel (uphill), sand, dirt,
mogul (uphill) and grassBetween M and H
H (High)
1
2
3
4
5

2554-5. Using the driving support systems
4
Driving
4RUNNER (U)_(OM35B37U)■
Automatic system cancelation
In the following situations, the system will cease operation and a buzzer will
sound to alert the driver. The Crawl Cont rol indicator will flash until the system
is turned off completely.
● When the shift lever is shifted to P or N
● When the front-wheel drive control lever or switch is shifted to H4
● When the driver’s door is opened
● When the system is malfunctioning
● When the brake system overheats
Stop the vehicle in a safe place. (There is no problem with continuing normal
driving.)
● When the automatic transmission system overheats
Stop the vehicle in a safe place until the automatic transmission fluid tem-
perature warning light goes off.
■ Sounds and vibrations caused by the Crawl Control system
● 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 indicate
that a malfunction has occurred in Crawl Control system.
● Either of the following conditions may occur when the Crawl Control system
is operating. None of these indicates that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard after the vehicle comes to a stop.
CAUTION
■When using Crawl Control
● Do not overly rely on Crawl Control. This function does not extend the
vehicle’s performance limitations. Always check the terrain thoroughly and
drive safely.
● The recommended speed modes for the listed terrains ( →P. 254) are only
a reference. The selected mode may not be suitable to actual off-road con-
ditions due to factors such as the type or unevenness of the terrain or the
degree of incline. Check the actual terrain thoroughly and drive safely.
● After activating Crawl Control, make sure that the Crawl Control indicator
comes on. If the indicator flashes, the vehicle is not under system control.
■ Conditions under which the syst em may not operate correctly
When driving on the following surfaces, the system may not be able to
maintain a fixed low speed, which may result in an accident:
● Extremely steep inclines
● Extremely uneven surfaces
● Snow-covered roads, or other slippery surfaces

2564-5. Using the driving support systems
4RUNNER (U)_(OM35B37U)
Multi-terrain Select∗
∗: If equipped
The Multi-terrain Select system has 4 terrain modes. When a ter-
rain mode is selected in accordance with terrain conditions,
engine power and active traction c ontrol system is controlled to
enhance off-road drivability.
Additionally, guidance messages such as transfer mode selec-
tion advice are displayed on th e multi-information display to
assist the driver in operating the vehicle.
“ON/OFF” switch
Mode selector dial
Mode indicators
Multi-terrain Select indicator
Multi-information display1
2
3
4
5