wheel torque DACIA DUSTER 2019 Owners Manual

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2.20
ENG_UD32144_1
Transmission : 4 roues motrices (4WD) (H79 - Dacia)
ENG_NU_1079-3_H79Ph2_Dacia_2
4x2 (2WD) and 4x4 (4WD)
mode selector
Depending on the road conditions, tur-
ning selector 1 enables the following
modes to be selected:
– 2WD ;
– AUTO ;
– 4WD Lock.
TRANSMISSION: 4-wheel drive (4WD) (1/4)
“AUTO" mode
To activate this mode, turn the selec-
tor 1 to the “AUTO” position.
Operating principle
“AUTO” mode automatically distributes
the engine torque between the front and
rear axles according to the road condi-
tions and the vehicle speed. This po-
sition optimises roadholding. Use this
mode on any type of road (dry, snow-
covered, slippery, etc.) or when towing
(trailer or caravan). This mode is not in-
dicated on the instrument panel.
“2WD" mode
To activate this mode, turn selector 1 to
the “2WD" position. The
‘ indica-
tor light will light up on the instrument
panel.
Operating principle
The “2WD” mode uses the front wheels
only. Use this mode on dry roads with
good grip.
Remember that driving a vehicle off-
road is very different to driving it on
the road.
To make the most of your vehicle
in an off-road situation, we recom-
mend that you are trained to drive a
4x4 (4WD) vehicle.
The safety of both you and your
passengers is your responsibility,
and depends on your skill and the
care you take when driving off-road.
1

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2.21
ENG_UD32144_1
Transmission : 4 roues motrices (4WD) (H79 - Dacia)
ENG_NU_1079-3_H79Ph2_Dacia_2
TRANSMISSION: 4-wheel drive (4WD) (2/4)
This problem may be resolved by chan-
ging the tyres. Always use four identi-
cal tyres (same brand, profile, etc.) and
with similar wear.
In the event of excessive wheelspin,
the mechanical components may be
overheating.
If this happens:
– at first, the
’ warning light
flashes. “4WD Lock” mode is still
active, however we recommend that
you stop as soon as possible to allow
the system to cool down (until the
warning light stops flashing);
– if the wheels still spin, the system au- tomatically switches to “2WD” mode
to protect the mechanical compo-
nents.
The
‘ warning light flashes. The
mode cannot be changed while the
light is flashing.
After one minute, the system switches
to “2WD” or “AUTO” mode depending
on the position of the selector.
Note: if the vehicle speed exceeds
36 mph (60 km/h) in 4WD Lock mode,
the system automatically switches back
to AUTO mode. The
’ indicator
light goes out.
Special features of the
4-wheel drive transmission
The vehicle may make more noise when
the “AUTO" or "4WD Lock" modes are
activated. This is normal. If the system
detects a difference in the dimensions
of the front and rear wheels (eg. un-
derinflation, severe wear on an axle),
the system automatically switches to
"2WD" mode.
The
‘ and Ò warning lights on
the instrument panel come on. Drive as
soon as possible at a moderate speed
to an approved dealer.
To deactivate this mode, turn selector
1
to the “AUTO” position. The
‘ indi-
cator light on the instrument panel goes
out.
“4WD Lock" mode
To activate this mode, turn selector 1 to
the “4WD Lock” position. The selector
the returns to the “AUTO” position. The
’ indicator light will light up on the
instrument panel.
Operating principle
“4WD Lock” mode distributes the
engine torque between the front and
rear axles in order to optimise the per-
formance capacity of the vehicle in off-
road situations. This mode should only
be used in extreme driving conditions
(mud, steep slopes, sand).
To deactivate this mode, turn selector 1
to the “4WD Lock” position again. The
indicator light on the instrument panel
goes out. When the engine is switched
off, the system stays in “4WD Lock”
mode for one minute.

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2.22
ENG_UD32144_1
Transmission : 4 roues motrices (4WD) (H79 - Dacia)
ENG_NU_1079-3_H79Ph2_Dacia_2
TRANSMISSION: 4-wheel drive (4WD) (3/4)
Electronic stability program and
traction control when driving off-
road
(vehicles equipped with ESC)
When driving on soft ground (sand,
mud, deep snow), we recommend that
you deactivate the ESC function by
pressing the “ ESC” switch.
In this case, only individual wheel bra-
king remains active. This function ap-
plies the brake to any wheel that is slip-
ping, allowing the engine torque to be
transferred to the wheels with the most
grip. This is particularly useful when
crossing a bridge.
All the ESC functions will be reactivated
when the vehicle speed reaches ap-
proximately 30 mph (50 km/h) (36 mph
(60 km/h) in 4WD Lock mode), when
the engine is restarted or when the
“ESC” button is pressed again.Operating faults
If the system detects an operating
fault, it automatically switches to “2WD”
mode, and the
‘ and Ò war-
ning lights come on.
Drive as soon as possible at a mode-
rate speed to an approved dealer.
For certain operating faults, the system
may not be able to switch to “2WD" or
"4WD Lock" mode. "AUTO" mode re-
mains active.
Contact an approved dealer as soon as
possible.
In this case, we recommend that you
stop as soon as possible to allow the
system to cool down (until the warning
light stops flashing).
Cooling may take up to five minutes.
If the system detects excessive whee-
lspin on the front wheels, it adapts the
engine to run in a way that reduces
wheelspin.
Anti-lock braking in “
LOCK” mode
(vehicles equipped with ABS)
When “4WD Lock" mode is active, the
ABS switches to off-road mode. In this
case, the wheels may lock intermit-
tently to achieve better grip, thus redu-
cing braking distances on soft ground.
When this mode is active:
– the vehicle’s manoeuvrability is limi- ted during braking. This operating
mode is therefore not recommended
in very low-grip conditions (eg. ice).
– there may be some noise. This is normal, and does not indicate an
operating fault.

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5.11
ENG_UD34941_5
Changement de roue (H79 - H79 Ph2 - Dacia)
ENG_NU_1079-3_H79Ph2_Dacia_5
CHANGING A WHEEL (2/2)
If the vehicle is parked on
the hard shoulder, you must
warn other road users of
your vehicle’s presence
with a warning triangle or with other
devices as per the legislation apply-
ing to the country you are in.
Note: ensure that the emergency
spare wheel or punctured wheel and
the wheel tray are correctly posi-
tioned so that the luggage compart-
ment carpet can be properly fitted.
Tighten the bolts, checking that the
wheel is correctly positioned on its hub
and lower the jack.
With the wheels on the ground, tighten
the bolts firmly, beginning on side 5,
then 7, 9, 6, and finishing with 8. Check
the tightness (tightening torque 105
Nm), and the pressure of the emer-
gency spare wheel’s tyre as soon as
possible.
If the vehicle is not equipped with a
jack or wheelbrace, you can obtain
these from your approved dealer.
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6
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