engine RENAULT LAGUNA COUPE 2012 X91 / 3.G Service Manual

JauneNoirNoir texte
2.13
ENG_UD11986_3
Frein de parking assisté (X91 - D91 - Renault)
ENG_NU_939-3_D91_Renault_2
Special cases
When parking on a slope or towing a
trailer, pull switch 3 for a few seconds
to obtain the maximum braking effect.
To park the vehicle without applying the
electronic parking brake (if there is a
risk of freezing, for example):
– w i t h t h e e n g i n e r u n n i n g a n d
RENAULT card in reader 4 , switch
off the engine by pressing engine
Start/Stop button 1;
– select a gear (manual gearbox) or
position P (automatic gearbox);
– depress the brake pedal and press
switch 3 at the same time;
– remove the RENAULT card from the
card reader.
Brief stopTo manually activate the electronic
parking brake, (when stopping at a red
light, or stopping when the engine is
running, etc.): pull and release switch 3.
The brake is released as soon as the
vehicle is started up again.
aSSISteD P aRKING BRaKe (continued)
4
13
Manual operationYou can control the electronic parking
brake manually.
applying the electronic parking
brake
Pull switch 3 . Indicator lights 2 and
} light up on the instrument panel.
Releasing the electronic parking
brake
With the ignition on, depress the brake
pedal then press button 3 : indicator
lights 2 and
} go out.
2

2.14
ENG_UD11986_3
Frein de parking assisté (X91 - D91 - Renault)
ENG_NU_939-3_D91_Renault_2
– If there is an electronic parking brake
fault, warning lights
®, D
and
} light up accompanied by
the “Parking brake fault” message
and beep.
This indicates that it is essential to
stop immediately (as soon as traffic
conditions allow).
operating faults
– If there is a fault, warning lights
} and © light up on the in-
strument panel accompanied by the
“Check parking brake” message.
Contact an approved Dealer as soon
as possible.
aSSISteD P aRKING BRaKe (continued)
It is therefore essential to
immobilise the vehicle by
engaging first gear (manual
gearbox) or position P (au -
tomatic gearbox). If the slope re -
quires it, chock the vehicle.
Versions with an automatic
gearbox
For safety reasons, automatic release
is deactivated when the driver’s door
is open or not shut properly and the
engine is running (in order to prevent
the vehicle from moving without the
driver). A beep draws your attention to
this and the message “release manu -
ally” is displayed on the instrument
panel.
If no lights or sounds are
apparent, this indicates
a fault in the instrument
panel. This indicates that it
is essential to stop immediately
(as soon as traffic conditions
allow). Ensure that the vehicle is
correctly immobilised and contact
an approved Dealer.Never leave your vehicle
without moving the selec -
tor lever to position P or N.
This is because when the
vehicle is stationary with the engine
running and a gear engaged, the
vehicle may begin to move if you
accelerate.
there is a risk of accidents.

driving ................................................... (up to the end of the DU)
fuel economy ........................................ (up to the end of the DU)
advice on antipollution .......................... (up to the end of the DU)
antipollution advice .............................................................. (current page)
fuel advice on fuel economy ................................... (current page)
2.15
ENG_UD19886_6
Conseils antipollution, économie de carburant, conduite (X45 - H45 -\
X85 - B85 - C85 - S85 - X91 - X83 - X61 - F61 - K61 - K85 - X95 - B95 -\
D95 - J95 - R95 - L38 - X61
ENG_NU_939-3_D91_Renault_2
Advice: antipollution and fuel economy
aDVICe: antipollution, fuel economy and driving (1/3)
Your vehicle complies with criteria for
recycling and recovering vehicles at the
end of their service life which will come
into force in 2015.
Some parts of your vehicle have there-
fore been designed to facilitate future
recycling.
These parts are easy to remove so
that they can be recovered and reproc-
essed by recycling companies.
By virtue of its design, moderate fuel
consumption and initial settings, your
vehicle also conforms to current anti-
pollution regulations. The manufac -
turer is actively striving to reduce pol -
lutant exhaust gas emissions and to
save energy. But the fuel consumption
of your vehicle and the level of pollutant
exhaust gas emissions are also your
responsibility. Ensure that it is main -
tained and used correctly.aiding fuel economy
Depending on the vehicle, in order to
optimise consumption, an indicator light
on the instrument panel will inform you
of the best moment to upshift or down -
shift gears:
\ shift up a gear;
[ shift down a gear.
Maintenance
It is important to remember that failure to
respect antipollution regulations could
lead to legal action being taken against
the vehicle owner. In addition, replacing
engine, fuel supply system and exhaust
components with parts other than those
originally recommended by the manu -
facturer may alter your vehicle so that
it no longer complies with antipollution
regulations. Have your vehicle adjusted and
checked by an approved Dealer, in ac-
cordance with the instructions given in
your maintenance schedule: they will
have all the equipment necessary for
ensuring that your vehicle is maintained
to its original standard.
engine adjustments–
ignition: this does not require ad -
justment.
– spark plugs: for optimum fuel econ-
omy, efficiency and performance
the specifications laid down by our
Design Department must be strictly
applied.
If the spark plugs have to be
changed, use the make, type and
gap specified for your vehicle’s
engine. Contact an approved dealer
for this.
– idle: this does not require adjust -
ment.
– air filter, diesel filter: a clogged ele-
ment reduces performance. It must
be replaced.

2.16
ENG_UD19886_6
Conseils antipollution, économie de carburant, conduite (X45 - H45 -\
X85 - B85 - C85 - S85 - X91 - X83 - X61 - F61 - K61 - K85 - X95 - B95 -\
D95 - J95 - R95 - L38 - X61
ENG_NU_939-3_D91_Renault_2
Jaune NoirNoir texte
aDVICe: antipollution, fuel economy and driving (2/3)
– Avoid sudden acceleration.
– Brake as little as possible. If you an-
ticipate an obstacle or bend in ad -
vance, you may then simply release
the accelerator pedal.
– Do not try to maintain the same
speed up a hill, accelerate no more
than you would on the level. Keep
your foot in the same position on the
accelerator pedal.
– Double declutching and accelerating
before switching off are unnecessary
in modern vehicles.
– Bad weather, flooded roads:
Do not drive through floods
if the water is above the
lower edge of the wheel
rims.
Driving– Drive carefully for the first few miles
until the engine reaches its normal
operating temperature, rather than
let it warm up while the vehicle is sta-
tionary.
– Speed is expensive.
– Sporty driving uses a lot of fuel: drive
with a light right foot.
– Do not overrev the engine in the in-
termediate gears.
Always use the highest gear possi -
ble without labouring the engine.
On versions with an automatic gear-
box, it is preferable to keep the gear
lever in position D.
exhaust gas monitoring
system
The exhaust gas monitoring system will
detect any operating faults in the vehi-
cle’s antipollution system.
If this system malfunctions, toxic sub -
stances may be released into the at -
mosphere or damage may occur.
ÄThis warning light on the in -
strument panel will indicate if
there are any faults in the system:
This lights up when the ignition is
switched on and goes out when the
engine is started.
– If it lights up continuously, consult an
approved Dealer as soon as possi -
ble;
– if it flashes, reduce the engine speed
until the light stops flashing. Contact
your approved dealer as soon as
possible.
obstructions to the driver
On the driver ’s side, only
use mats adapted to the ve-
hicle that attach to the pre-
installed parts, and regularly check
their mounting. Do not place several
mats on top of each other.
Risk of pedals jamming

JauneNoirNoir texte
2.17
ENG_UD19886_6
Conseils antipollution, économie de carburant, conduite (X45 - H45 -\
X85 - B85 - C85 - S85 - X91 - X83 - X61 - F61 - K61 - K85 - X95 - B95 -\
D95 - J95 - R95 - L38 - X61
ENG_NU_939-3_D91_Renault_2
aDVICe: antipollution, fuel economy and driving (3/3)
advice on use
– Electricity is fuel; switch off all the
electrical components which are
not really needed. however (safety
first), keep your lights on when the
visibility is bad (“see and be seen”).
– Use the air vents. Driving with the
windows open at 60 mph (100 km/h)
will increase fuel consumption by
4%.
– Avoid using the car for door-to-door
calls (short journeys with long waits
in between) because the engine
never reaches its normal operating
temperature.
tyres
– An underinflated tyre increases fuel
consumption.
– The use of non-recommended tyres
can increase fuel consumption.
–
In vehicles fitted with air condi -
tioning, it is normal to observe an
increase in fuel consumption (es -
pecially in urban conditions) when
it is used. For vehicles fitted with
manual air conditioning, switch off
the system when it is not required.
advice for reducing consumption
and therefore helping to preserve
the environment:
If the vehicle has been parked in the
sun, open the doors for a few mo -
ments to let the hot air escape before
starting the engine.
– Never fill the fuel tank right to the
brim to avoid overflow.
– Do not leave an empty roof rack
fitted to the vehicle.
– It is better to fit a trailer for bulky ob-
jects.
– When towing a caravan, fit a wind
deflector and adjust it carefully.

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.

automatic gearbox (use) ....................... (up to the end of the DU)
automatic gearbox selector lever ..........(up to the end of the DU)
changing gear ....................................... (up to the end of the DU)
reverse gear selecting .......................................... (up to the end of the DU)
driving ................................................... (up to the end of the DU)
2.37
ENG_UD27633_9
Boîte de vitesses automatique (X91 - B91 - K91 - D91 - Renault)
ENG_NU_939-3_D91_Renault_2
Automatic gearbox
Selector lever 1
Display 3 on the instrument panel
shows the mode and gear selected.
4: P: park
5: R: reverse gear
6: N: neutral
7: D: automatic mode
8 : manual mode
9 : zone displaying gearbox mode or
gear engaged in manual mode
operation
With gear lever 1 in position P, switch
on the ignition.
To move out of position P, you must de-
press the brake pedal before pressing
unlocking button 2.
With your foot on the brake pedal
(warning light
c on display 3 goes
out), move the lever out of position P.
o nly engage D or R when the vehi -
cle is stopped, with your foot on the
brake and the accelerator pedal re -
leased.
aUtoMatIC GeaRBox (1/3)
Driving in automatic mode
Select position D. In most traffic con -
ditions, you will not have to touch the
gear selector lever again: the gears will
change automatically at the right time
and at the most suitable engine speed
because the automatic system takes
into account the vehicle load and road
contour and adjusts itself to the particu-
lar driving style you have chosen.
economical driving
When driving, always leave the lever
in position D, keeping the accelerator
pedal lightly depressed to ensure auto-
matic gear changes at a lower engine
speed.
accelerating and overtaking
Depress the accelerator pedal firmly
and fully (so that it goes beyond the
kickdown point).
this will enable you to change down
to the optimum gear within the
engine range.
3
2
1
4
5
6
78
9

2.38
ENG_UD27633_9
Boîte de vitesses automatique (X91 - B91 - K91 - D91 - Renault)
ENG_NU_939-3_D91_Renault_2
Jaune NoirNoir texte
Parking the vehicle
When the vehicle is stopped, move the
lever to position P while keeping your
foot on the brake pedal: the gearbox is
in neutral and the drive wheels are me-
chanically locked by the driveshaft.
a pply the handbrake or, depending
on the vehicle, ensure that the elec-
tronic parking brake is applied.
Special circumstances
– If the road contours and bends
do not allow you to stay in auto -
matic mode (e.g.: in the mountains),
we recommend that you change to
manual mode.
This will prevent the automatic gear-
box from changing gears repeatedly
when climbing, and permit engine
braking on long descents.
– In cold weather , to prevent the
engine from stalling, wait a few mo-
ments before shifting the selector
lever from position P or N and en -
gaging D or R.
– Vehicles not fitted with traction
control: on a slippery surface or
surface with a low level of adhe -
sion, change to manual mode and
select second gear before starting
the engine to avoid wheelspin when
starting.
Driving in manual mode
With the selector lever in position D,
move the lever to the left. Shifting the
lever repeatedly allows you to change
gears manually:
– To move down through the gears,
push the lever backwards;
– To move up through the gears, push
the lever forwards.
The gear selected is displayed on the
instrument panel.
Special cases
Under certain driving conditions (e.g.
engine protection, electronic stability
program (ESP) operational etc.: ESC),
the “automatic system” may change
gear automatically.
Likewise, to prevent incorrect manoeu -
vres, a gear change may be refused by
the automatic system: in this case the
gear display flashes for a few seconds
as a warning.
aUtoMatIC GeaRBox (2/3)
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.: de -
formation of an axle).
To avoid any risk of accident, have
your vehicle checked by an ap -
proved Dealer.
In very cold weather, the system
may prevent the gears from being
shifted in manual mode until the
gearbox reaches the right tempera-
ture.

JauneNoirNoir texte
3.7
ENG_UD22215_6
Air conditionné automatique (X91 - B91 - K91 - Renault)
ENG_NU_939-3_D91_Renault_3
AuT oMATIc clIMATE coNTRol (2/4)
The displayed temperature values
show a comfort level.
When starting the engine, increas -
ing or decreasing the value dis -
played will not allow the com -
fort level to be reached any more
quickly. The system will always op-
timise the temperature increase or
decrease (the ventilation system
does not start instantly at maximum
speed: it gradually increases). This
may take several minutes.
Generally speaking, unless there is
a particular reason not to, the dash-
board air vents should remain open.
Switching air conditioning on
or off
In automatic mode, the system switches
the air conditioning system on or off,
depending on the climate conditions.
Press button 10 to switch off the air
conditioning.
Varying the ventilation speed
In automatic mode, the system uses
the most suitable amount of air to reach
and maintain the desired comfort level.
You can always adjust the ventilation
speed by pressing on the top or bottom
of button 11 to increase or decrease the
ventilation speed.
In this situation, the ventilation speed,
which is no longer automatically con -
trolled, appears on the display.
Where possible, it is recom -
mended that automatic mode is
used by selecting one of the auto-
matic programmes: AuT o, SoFT
or FAST.
In automatic mode (indicator light
for button 3 on), all heating and air
conditioning functions are controlled
by the system.
You can also change the system
selection, in this case, indicator
light for button 3 will go out and
the changed function, which is no
longer controlled by the system, is
shown on display 12.
To return to automatic mode, press
one of programmes: AuTo , S o FT
or FAST.
10
3
11
12