2012 RENAULT LAGUNA check engine

2.24
ENG_UD27695_10
Dispositifs de correction et d’assistance à la de conduite (X91 - B91 - K91 - D91 - Renault)
ENG_NU_936-5_BK91_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_936-5_BK91_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.

2.38
ENG_UD27633_9
Boîte de vitesses automatique (X91 - B91 - K91 - D91 - Renault)
ENG_NU_936-5_BK91_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.

3.10
ENG_UD10081_2
Air conditionné : informations et conseils d’utilisation (X91 - B\
91 - K91 - Renault)
ENG_NU_936-5_BK91_Renault_3
Air conditioning: information and advice on use
AIR coNDITIoNINg: information and advice on use
Fuel consumption
You will normally notice an increase
in fuel consumption (especially
when driving in town) when the air
conditioning is operating.
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:
Drive with the air vents open and
the windows closed.
If the vehicle has been parked in
the sun, open the doors for a few
moments to let the hot air escape
before starting the engine.
Maintenance
Refer to the Maintenance Document
for your vehicle for the inspection
frequency.operating faults
As a general rule, contact your ap-
proved Dealer in the event of an op-
erating fault:
– reduction in de-icing, demist -
ing or air conditioning per -
formance. This may be caused
by the passenger compartment
filter cartridge becoming clogged;
– no cold air is being produced.
Check that the controls are set
correctly and that the fuses are
sound. Otherwise, switch off the
system.
Advice on use
In some situations, (air conditioning
off, air recirculation activated, venti-
lation speed at zero or low, etc.) you
may notice that condensation starts
to form on the windows and wind -
screen.
If there is condensation, use the
“clear View” function to remove it,
then use the air conditioning in auto-
matic mode to stop it forming again.
If the condensation does not clear,
use the FAST programme.
Do not open the refriger -
ant fluid circuit. The fluid
may damage eyes or skin.
Note
Presence of water under the ve -
hicle. After prolonged use of the air
conditioning system, it is normal for
water to be present under the vehi-
cle. This is caused by condensation.

bonnet................................................... (up to the end of the DU)
maintenance: mechanical ...................................... (up to the end of the DU)
4.2
ENG_UD28950_3
Capot moteur (X91 - B91 - K91 - Renault)
ENG_NU_936-5_BK91_Renault_4
Jaune NoirNoir texte
Bonnet
Opening the bonnet
Lift the bonnet and release stay 4 from
its holder 5 . For your own safety, it is
very important to fix the stay into re -
tainer 3 in the bonnet.
To open, pull handle
1 , located on the
left-hand side of the dashboard.
Unlocking the bonnet catch
To unlock, lift tab 2 (hook A will release
the bonnet).
BOnnet (1/2)
The engine may be hot
when carrying out opera -
tions in close proximity. In
addition, the engine cooling
fan can come on at any moment.
Risk of injury.In the event of even a slight
impact involving the radia -
tor grille or bonnet, have
the bonnet lock checked by
an approved Dealer as soon as pos-
sible.
1
A
2

JauneNoirNoir texte
4.3
ENG_UD28950_3
Capot moteur (X91 - B91 - K91 - Renault)
ENG_NU_936-5_BK91_Renault_4
Closing the bonnet
Check that nothing has been left in the
engine compartment.
To close the bonnet, replace stay 4
back into its holder 5, hold the bonnet in
the middle and lower it to 30 cm above
the closed position, then release it. It
will latch automatically under its own
weight.
Ensure that the bonnet is
properly locked.
Check that nothing is pre -
venting the catch from lock-
ing (gravel, cloth, etc.).
BOnnet (2/2)
3
4
5
After any procedure in the
engine compartment, make
sure that you do not forget
anything (cloth, tools, etc.).
These may damage the engine or
cause a fire.
Deactivate the Stop and
Start function for any opera -
tion performed in the engine
compartment.

engine oil ............................................................... (current page)
oil change .............................................................. (current page)
levels: engine oil ......................................................... (current page)
4.4
ENG_UD28951_8
Niveau huile moteur : généralités (X91 - B91 - K91 - D91 - Ren\
ault)
ENG_NU_936-5_BK91_Renault_4
Jaune NoirNoir texte
Engine oil level:
general information
enGIne OIL LeVeL: general information (1/2)
Minimum oil level warning on
the instrument panel
When the message “test of functions
being checked” appears on the instru -
ment panel, press one of the buttons 3
or 4.
If the level is above the minimum
level : the display shows “oil level cor -
rect accompanied by squares 1 which,
when the level drops, are replaced by
dashes 2.
note: the detailed level cannot be dis-
played if the vehicle was previously
only driven for a short time. If the minimum level has been
reached: the message “Adjust oil level”
and warning light © lights up on
the instrument panel.
It is vital to top up the oil as soon as
possible.
n ote : To advance to trip computer
reading, press button 3 or 4 again.
The display only warns the
driver if the oil level is at the
minimum level. It does not
inform the driver that the oil
level has exceeded the maximum
level as this can only be measured
using a dipstick.
It is normal for an engine to use oil for
lubrication and cooling of moving parts
and it is normal to top up the level be-
tween oil changes.
However, contact your approved
Dealer if more than 0.5 litres is being
consumed every 600 miles (1,000 km)
after the running in period.
Oil change frequency: check the oil
level from time to time and certainly
before any long journey to avoid the
risk of damaging your engine.
Reading the oil level
The oil level should be read with the ve-
hicle on level ground, after the engine
has been switched off for some time.
t he dipstick must be used to read
the exact oil level and make sure
that the maximum level has not been
exceeded (risk of engine damage).
Refer to the following pages.
The instrument panel display only
alerts the driver when the oil level is at
its minimum.
3
4
Oil level
   
12

4.6
ENG_UD29069_3
Niveau huile moteur : appoint, remplissage (X91 - B91 - K91 - Renault)\
ENG_NU_936-5_BK91_Renault_4
Jaune NoirNoir texte
topping up/filling
– Unscrew cap 1;
– top up the level (as a guide, the ca-
pacity between the minimum and
maximum reading on the dipstick 2
is between 1.5 and 2 litres, depend-
ing on the engine);
enGIne OIL LeVeL: topping up/filling (1/2)
t opping up/filling
The vehicle must be parked on level
ground and the engine should be cold
(for instance, before the engine is
started up for the first time in the day).
engine oil grade
Refer to the Maintenance Document for
your vehicle.
Do not exceed the “maximum” level
and do not forget to refit the cap 1
and dipstick 2.To prevent splashback, you are rec-
ommended to use a funnel to top up
the oil.
1
2
1
2
1
2
– wait for approximately 20 minutes to
allow the oil to flow into the engine;
– check the level using the dipstick 2
(as described above).
Once the operation has been com -
pleted, ensure that the dipstick is
pushed in as far as it will go or that the
cap-type dipstick is completely screwed
in.