2012 RENAULT LAGUNA COUPE Owners Manual

tyres ...................................................... (up to the end of the DU)
tyre pressure monitor ............................(up to the end of the DU)
tyre pressure ......................................... (up to the end of the DU)
driving ................................................... (up to the end of the DU)
2.19
ENG_UD22198_5
Système de surveillance de pression des pneumatiques (X91 - B91 - K9\
1 - Renault)
ENG_NU_939-3_D91_Renault_2
This system monitors the tyre pressure.
Information is displayed:
– with the ignition on, when scrolling
through the trip computer and warn-
ing system information by pressing
control 2 (refer to the information
on the “trip computer and warning
system” in Section 1);
– or if there is a fault when driving
(refer to the following page to find out
more about the warning messages).
Tyre pressure monitor
This function is an addi -
tional driving aid.
However, the function does
not take the place of the
driver. It cannot, therefore, under
any circumstances replace the vig -
ilance or the responsibility of the
driver.
Check the tyre pressures, including
the emergency spare wheel, once a
month.
tyRe PReSSURe MoNItoR (1/3)
If the vehicle is equipped with the func-
tion, this system monitors the tyre pres-
sure.
operating principle
Each wheel (except for the emergency
spare wheel) has a sensor in the infla-
tion valve which periodically measures
the tyre pressure.
The system informs the driver via the
trip computer and warning system 1
that the tyres are sufficiently inflated
and warns if they are underinflated or
leaking.
t he tyre pressure can be adjusted
when cold (refer to the information on
“Tyre pressures”).
If tyre pressures cannot be checked
when the tyres are cold, the recom -
mended pressures must be increased
by 0.2 to 0.3 bar (3 PSI).
Never deflate a hot tyre.1
2
Changing a wheel
The system may take sev -
eral minutes depending on
use for the new wheel po -
sitions and pressures to be recog -
nised; check the tyre pressures after
all operations.

2.20
ENG_UD22198_5
Système de surveillance de pression des pneumatiques (X91 - B91 - K9\
1 - Renault)
ENG_NU_939-3_D91_Renault_2
Jaune NoirNoir texte
Display
Display 1 on the instrument panel in -
forms you of any tyre pressure faults
(flat tyre, punctured tyre, system fault,
etc.).
tyRe PReSSURe MoNItoR (2/3)
1
“Check tyre pressure”
A shaded wheel B indicates a deflated
tyre.
“Inflate tyres to motorway pressure”
The tyre pressure is not suitable for the
speed of travel. Slow down or inflate all
four tyres to motorway pressure (refer
to the information on “Tyre pressures”).
“Puncture”
Wheel B indicates that the tyre con -
cerned is punctured or severely un -
derinflated. Replace it or contact an
approved dealer if it is punctured. Top
up the tyre pressure if the wheel is de-
flated.
This message appears along with the
® warning light.
“t
yre sensors absent” or “check
tyre sensors”
One wheel A disappears, indicating
that the sensor on this wheel is missing
or faulty (e.g. if the emergency spare
wheel is fitted).
a
B

JauneNoirNoir texte
2.21
ENG_UD22198_5
Système de surveillance de pression des pneumatiques (X91 - B91 - K9\
1 - Renault)
ENG_NU_939-3_D91_Renault_2
Interchangeability of wheelsIf you wish to swap the wheels around,
please consult an approved dealer to
reinitialise the system.
emergency spare wheelIf the vehicle is equipped with an emer-
gency spare wheel, it will not have a
sensor. When it is fitted to the vehicle,
the message “tyre sensors absent” is
displayed on the instrument panel.
Replacing wheels/tyres
This system requires specific equip -
ment (wheels, tyres, hubcaps, etc.).
Contact an approved dealer to fit new
tyres and to find out about accessories
compatible with the system and avail -
able from manufacturer ’s accessory
outlets: the use of any other accessory
could affect the correct operation of the
system or damage the system.
t yre repair products
Because the valves are specially de -
signed, only use products approved by
our Technical Department.
tyRe PReSSURe MoNItoR (3/3)
Each of the sensors incorporated in the valves 3 is dedicated to a single
wheel: under no circumstances should you swap the wheels, without re-
setting the system.
There is a risk of incorrect information which could have serious conse-
quences.
3
3
4
CD
eF
To mark the correct position of the
wheel, note the colour of ring 4 (after
cleaning, if necessary) on each valve:
C yellow ring
D black ring
E red ring
F green ring

ABS ...................................................... (up to the end of the DU)
anti-lock braking system: ABS ..............(up to the end of the DU)
emergency brake assist ........................(up to the end of the DU)
emergency braking ............................... (up to the end of the DU)
driving ................................................... (up to the end of the DU)
ASR (traction control) ........................... (up to the end of the DU)
traction control: ASR .............................(up to the end of the DU)
traction control system: ASR ................(up to the end of the DU)
electronic stability control: ESC ............ (up to the end of the DU)
ESC: electronic stability control ............ (up to the end of the DU)
Hill Start Assist...................................... (up to the end of the DU)
2.22
ENG_UD27695_10
Dispositifs de correction et d’assistance à la de conduite (X91 -\
B91 - K91 - D91 - Renault)
ENG_NU_939-3_D91_Renault_2
Jaune NoirNoir texte
aBS (anti-lock braking
system)
Under heavy braking, the ABS prevents
the wheels from locking, allowing the
stopping distance to be managed and
keeping control of the vehicle.
Under these circumstances, the vehi -
cle can be steered to avoid an obstacle
whilst braking. In addition, this system
can increase stopping distances, par -
ticularly on roads with low surface grip
(wet ground etc.).
You will feel a pulsation through the
brake pedal each time the system is
activated. The ABS does not in any way
improve the vehicle's physical perform-
ance relating to the road surface and
roadholding. It is still essential to follow
the rules of good driving practice (such
as driving at a safe distance from the
vehicle in front etc.).
Driver correction devices and aids
DRIVeR CoRReCtIoN DeVICeS aND aIDS (1/5)
Depending on the vehicle, they may
comprise:
– t h e aB S ( a n t i - l o c k b r a k i n g
system);
– eSC (electronic stability program)
with understeer control and a SR
traction control;
– emergency brake assist with, de -
pending on the vehicle, braking
anticipation;
– rear wheel steering.
In an emergency, apply firm and
continuous pressure to the brake
pedal. There is no need to pump
it repeatedly. The ABS will modu -
late the force applied in the braking
system.
These functions are an ad-
ditional aid in the event of
critical driving conditions,
enabling the vehicle behav -
iour to be adapted to suit the driving
conditions.
However, the functions do not take
the place of the driver. they do
not increase the vehicle’s limits
and should not encourage you
to drive more quickly. Therefore,
they can under no circumstances
replace the vigilance or responsibil -
ity of the driver when manoeuvring
the vehicle (the driver must always
be ready for sudden incidents which
may occur when driving).
Yo u r b r a k i n g s y s t e m s
are partially operational.
However, it is dangerous
to brake suddenly and
it is essential to stop immediately,
as soon as traffic conditions allow.
Contact an approved dealer.
operating faults:
–
© and x lit up on the in -
strument panel alongside mes -
sages “Check ABS”, “Check braking
system” and “Check ESC”: indicates
the ABS, ESC and emergency brake
assist are deactivated. Braking is
always enabled;
–
x, D, © and ® lit
up on the instrument panel alongside
the message “Braking system fault”:
this indicates a fault in the braking
system.
In both cases, consult an approved
dealer.

JauneNoirNoir texte
2.23
ENG_UD27695_10
Dispositifs de correction et d’assistance à la de conduite (X91 -\
B91 - K91 - D91 - Renault)
ENG_NU_939-3_D91_Renault_2
DRIVeR CoRReCtIoN DeVICeS aND aIDS (2/5)
hill start assistance
This function assists the driver when
starting on hills. It prevents the vehicle
from rolling backwards, depending on
the slope, by automatically applying the
brakes when the driver lifts his/her foot
off the brake pedal to depress the ac -
celerator pedal.
System operation
It only operates when the gear lever is
in a position other than neutral (other
than N or P for automatic transmis -
sions) and the vehicle is completely
stationary (brake pedal depressed)
The system holds the vehicle for ap -
proximately 2 seconds. The brakes are
then gradually released (the vehicle will
move according to the slope).
The hill start assistance
system cannot completely
prevent the vehicle from
rolling backwards in all sit -
uations (extremely steep gradients,
etc.).
In all cases, the driver may depress
the brake pedal to prevent the vehi-
cle from rolling backwards.
The hill start assistance function
should not be used for prolonged
stops: use the brake pedal.
This function is not designed to im-
mobilise the vehicle permanently.
If necessary, use the brake pedal to
stop the vehicle.
The driver must remain particularly
vigilant when driving on slippery or
low-grip surfaces and/or on hills.
Risk of serious injury.

2.24
ENG_UD27695_10
Dispositifs de correction et d’assistance à la de conduite (X91 -\
B91 - K91 - D91 - Renault)
ENG_NU_939-3_D91_Renault_2
Jaune NoirNoir texte
DRIVeR CoRReCtIoN DeVICeS aND aIDS (3/5)
electronic stability control
eSC with understeer control
and traction control aSR
electronic stability control eSC
This system helps you to keep control
of the vehicle in critical driving condi -
tions (avoiding an obstacle, loss of grip
on a bend, etc.).
operating principle
A sensor in the steering wheel detects
the direction selected by the driver.
Other sensors throughout the vehicle
measure the actual direction.
The system compares driver input to
the actual trajectory of the vehicle and
corrects the trajectory, if necessary, by
controlling the braking of certain wheels
and/or engine power. In the event that
the system is engaged, warning light
 flashes on the instrument panel. Understeer control
This system optimises the action of the
ESC in the case of pronounced under
-
steer (loss of front axle road holding).
t raction control (aSR)
This system helps to limit wheelspin of
the drive wheels and to control the ve-
hicle when pulling away accelerating or
decelerating.
operating principle
Using the wheel sensors, the system
measures and compares the speed of
the drive wheels at all times and slows
down their over-rotation. If a wheel is
starting to slip, the system brakes au -
tomatically until the drive supplied be -
comes compatible with the level of grip
under the wheel again.
The system also adjusts the engine
speed to the grip available under the
wheels, independently of the pressure
exerted on the accelerator pedal. operating faults
When the system detects an operat
-
ing fault the message “Check ESC” and
warning light
© appear on the in-
strument panel. In this case, the ESC
and ASR are deactivated.
Consult an approved dealer.

JauneNoirNoir texte
2.25
ENG_UD27695_10
Dispositifs de correction et d’assistance à la de conduite (X91 -\
B91 - K91 - D91 - Renault)
ENG_NU_939-3_D91_Renault_2
Disabling the aSR function
In some situations (driving on very wet
ground: snow, mud, etc. or driving with
snow chains fitted), the system may
reduce the engine output to limit wheel -
spin. If this is not required, it is possible
to deactivate the function by pressing
switch 1.
The message “ Traction control off ” is
displayed on the instrument panel to
inform you.
Traction control (ASR) offers additional
safety; it is recommended that you do
not drive with the function disabled.
Correct this as soon as possible by
pressing switch 1 again.
Note: The function is reactivated auto-
matically when the ignition is switched
on or when a speed of approximately
24 mph (40 km/h) is exceeded.
emergency brake assist
This system supplements the ABS
and helps reduce vehicle stopping dis-
tances.
operating principle
The system is for detecting an emer -
gency braking situation. In this case,
the braking assistance immediately de-
velops maximum power and may trig -
ger ABS regulation.
ABS braking is maintained as long as
the brake pedal is applied.
DRIVeR CoRReCtIoN DeVICeS aND aIDS (4/5)
1
hazard warning lights switching on
Depending on the vehicle, these may
light up in the event of sudden decel -
eration.
operating faults
When the system detects an operat -
ing fault the message “ Check brak-
ing system” appears on the instrument
panel along with the
© warning
light.
Consult an approved dealer.
Braking anticipation
Depending on the vehicle, when you
rapidly release the accelerator, the
system anticipates the braking ma -
noeuvre in order to reduce stopping
distances.
Special cases
When using the cruise control:
– if you use the accelerator, when you
release it, the system may be trig -
gered;
– if you do not use the accelerator, the
system will not be triggered.

rear drive wheels ................................................... (current page)
2.26
ENG_UD27695_10
Dispositifs de correction et d’assistance à la de conduite (X91 -\
B91 - K91 - D91 - Renault)
ENG_NU_939-3_D91_Renault_2
Rear wheel steering
On equipped vehicles, this system,
when the vehicle is being driven, steers
the rear wheels according to driving
conditions: at low speed this system
offers manoeuvrability, at higher speeds
it optimises stability.
When driving at low speeds, the rear
wheels steer in the opposite direction to
the front wheels (figure A ) to increase
the vehicle’s manoeuvrability. This is
used when driving in towns, on winding
roads, during parking manoeuvres, etc.
When driving at speeds above 40 mph
(60 km/h), the rear wheels steer in the
same direction as the front wheels
(figure B) to optimise the vehicle’s sta-
bility. This is useful when changing
lanes or when cornering etc. operating faults
–
If the
© warning light, together
with the message “ Check power
steering ”, is displayed on the instru-
ment panel: please contact an au -
thorised dealer.
– If the warning light
®, together
with the message “ Power steering
fault”, is displayed on the instrument
panel, this indicates a fault in the
system.
DRIVeR CoRReCtIoN DeVICeS aND aIDS (5/5)
aB
® requires you to stop
as soon as traffic conditions
allow. Contact an approved
Dealer.
An impact to the underside of the
vehicle (e.g.: striking a post, raised
kerb or other street furniture) may
result in damage to the vehicle (e.g.:
deformation of an axle).
To avoid any risk of accident, have
your vehicle checked by an ap -
proved Dealer.