2012 RENAULT LAGUNA COUPE check engine light

2.8
ENG_UD28949_4
Fonction Stop and Start (X91 - B91 - K91 - D91 - Renault)
ENG_NU_939-3_D91_Renault_2
operating faults
When the message “ Check Stop &
Start” appears on the instrument panel
and the integrated warning light 2 lights
up on the switch 1, the system is deac-
tivated.
Please consult an authorised dealer.
Deactivating, activating the
function
Press 1 to deactivate the function. The
message “Stop & Start deactivated ” will
appear on the instrument panel and the
integrated warning light 2 on the switch
will light up.
Pressing again will reactivate the
system. The message “Stop & Start ac-
tivated ” will appear on the instrument
panel and the integrated warning light 2
on switch 1 will go out.
StoP aND StaRt function (3/3)
The system is automatically reactivated
each time the vehicle is started using
the start button (please see “Starting,
stopping the engine)”.
Before getting out of the
vehicle, you must switch
off the ignition by pressing
the engine stop (please see
“Starting, stopping the engine”).
2
1
In the event of an emer -
gency, the engine can be
restarted by pressing on the
clutch pedal if the Stop and
Start function is activated.

catalytic converter................................. (up to the end of the DU)
special features of diesel versions ........(up to the end of the DU)
driving ................................................... (up to the end of the DU)
2.10
ENG_UD6756_3
Particularités des versions diesel (X91 - B91 - K91 - Renault)
ENG_NU_939-3_D91_Renault_2
Special features of diesel versions
SPeCIaL FeatUReS oF DIeSeL VeRSIoNS
Diesel engine speed
Diesel engines are fitted with injection
equipment which prevents the engine
speed being exceeded irrespective of
the gear selected.
If the message “Check antipollu -
tion” is displayed on the instrument
panel accompanied by the
Ä and
©warning light; consult an ap -
proved dealer straight away.
When driving, depending on the fuel
grade used, it is possible that white
smoke may be emitted.
This is due to the exhaust particle filter
being cleaned automatically, and does
not affect the way the vehicle runs.
Running out of fuel
If the tank has been completely
drained, the system must be reprimed
after the tank is refilled: see information
on the “fuel tank” in section 1 before re-
starting the engine.
Do not park the vehicle or
run the engine in locations
where combustible sub -
stances or materials such
as grass or leaves can come into
contact with the hot exhaust system.
Precautions to be taken in
winter
To avoid any faults in icy weather:
– ensure that the battery is always fully
charged,
– always keep the diesel tank rela -
tively full to avoid water vapour con-
densing in it and accumulating at the
bottom of the tank.

driving ................................................... (up to the end of the DU)
electronic parking brake ....................... (up to the end of the DU)
2.12
ENG_UD11986_3
Frein de parking assisté (X91 - D91 - Renault)
ENG_NU_939-3_D91_Renault_2
Jaune NoirNoir texte
Electronic parking brake
Before leaving the vehicle,
check that the electronic
parking brake is fully ap -
plied. Indicator light 2 on
switch 3 and indicator light
}
on the instrument panel light up to
show that the parking brake is ap -
plied but go out when the doors are
locked.
Note:
The message “apply parking brake” ap-
pears on the instrument panel and a
beep sounds to indicate that the elec -
tronic parking brake is applied or re -
leased: This message may appear:
– with the engine running: when the
driver’s door is opened;
– with the engine switched off (e.g.
when the engine stalls): when a door
is opened.
In this case, pull and release switch 3 to
apply the electronic parking brake.
The brake will be released as soon as
the vehicle starts and accelerates.
automatic operation
The electronic parking brake en -
sures vehicle immobilisation when the
engine is stopped and engine Start/
Stop button 1 is pressed.
In all other instances, e.g. engine stall-
ing, the electronic parking brake is not
applied automatically. Manual mode
must be used.
For certain country-specific model ver-
sions, the automatic brake application
function is not activated. Refer to the in-
formation on “Manual operation”.
aSSISteD P aRKING BRaKe
To confirm that the electronic parking
brake is applied, the message “parking
brake applied” and indicator light
}
on the instrument panel and indicator
light 2 on switch 3 light up.
Indicator light 2 goes out several min -
utes after the electronic parking brake
has been applied and indicator light
} goes out when the vehicle is
locked.
12
3

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

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.