check engine RENAULT MEGANE 2018 Owner's Guide

4.10
LEVELS (3/3)/FILTERS
Windscreen washer reservoir
Topping up
With the engine switched off, open
cap 3, fill until you can see the fluid,
then refit the cap.
Note: Regularly check the reservoir
level by topping up the liquid before
taking a trip. Liquid
Windscreen washer fluid. In winter, use
anti-freeze product. Use products rec-
ommended by an authorised dealer.
Note: do not use pure water (risk of
damage to the priming pump, limescale
building up on the pump and the jets).
Jets
To adjust the windscreen washer jets,
please consult an authorised dealer.
Depending on the vehicle, to find
out the fluid level, open cap
3 and
pull out the dipstick.
Filters
The replacement of filter elements (air
filter, passenger compartment filter,
diesel filter, etc.) is scheduled in the
maintenance operations for your vehi-
cle.
Replacement intervals for filter el-
ements: refer to the Maintenance
Document for your vehicle.
3

4.11
BATTERY (1/2)
1
Battery 1 does not require any mainte-
nance. You should not open it or add
any fluid.
Handle the battery with care
as it contains sulphuric acid
which must not come into
contact with the eyes or
skin. If it does, wash the affected
area with plenty of cold water. If
necessary, consult a doctor.
Ensure that naked flames, red hot
objects and sparks do not come into
contact with the battery as there is a
risk of explosion.
Please note when work-
ing close to the engine that
it may be hot. In addition,
the engine cooling fan may
start at any moment. The

warning light in the engine compart-
ment reminds you of this.
Risk of injury.
Before performing any
action in the engine com-
partment, the ignition must
be switched off (please see
the information on “Starting, stop-
ping the engine” in Section 2).
Depending on the vehicle, a system
continuously checks the battery charge
status. If this decreases, the message
“Battery low start engine” is displayed
on the instrument panel. In this case,
start the engine. The message will go
off.
The charge status of your battery can
decrease especially if you use your ve-
hicle:
– for short journeys;
– for driving in town;
– when the temperature drops;
– after extended use of energy-con- suming devices (radio, etc.) with the
engine switched off.

5.14
Any operation on (or modi-
fication to) the electrical
system must be performed
by an approved dealer
since an incorrect connection might
damage the electrical equipment
(harness, components and in partic-
ular the alternator). In addition, your
Dealer has all the parts required for
fitting these units.
LED dipped beam
headlights 1
Please see an authorised dealer.
LED main beam headlights 2
Please see an authorised dealer.
FRONT HEADLIGHTS: replacing the bulbs (1/2)
Halogen dipped beam
headlight
To change the bulb:
– open the bonnet;
– remove cover B;
– Turn the bulb holder a quarter turn 4;
– remove the bulb.
Bulb type: H7.
Once the bulb has been replaced,
check that it is properly secured.
BA
The bulbs are under pres-
sure and can break when
replaced.
Risk of injury.
1
Please note when work-
ing close to the engine that
it may be hot. In addition,
the engine cooling fan may
start at any moment. The

warning light in the engine compart-
ment reminds you of this.
Risk of injury.
2

5.31
Starting the vehicle using the
battery from another vehicle
If you have to use the battery from an-
other vehicle to start, obtain suitable
jump leads (with a large cross section)
from an approved dealer or, if you al-
ready have jump leads, ensure that
they are in perfect condition.
The two batteries must have an iden-
tical nominal voltage of 12 volts. The
battery supplying the current should
have a capacity (amp-hours, Ah) which
is at least the same as that of the dis-
charged battery.
Ensure that there is no risk of contact
between the two vehicles (risk of short
circuiting when the positive terminals
are connected) and that the discharged
battery is properly connected. Switch
off your vehicle ignition.
Start the engine of the vehicle supply-
ing the current and run it at a moderate
speed.
BATTERY: troubleshooting (2/2)
3
B
A
1
Lift the red cover on box 1 located
behind the battery.
Connect the positive cable A to sup-
port 3 (+) located under the box
cover 1, then to terminal 5 (+) of the
battery supplying the current.
Connect the negative cable B to termi-
nal 4 ( – ) of the battery supplying the
current then to the metal cable 2 ( – )
of the discharged battery.
2
54
Check that there is no con-
tact between leads A and B
and that the positive lead A
is not touching any metal
parts on the vehicle supplying the
current.
Risk of injury and/or damage to the
vehicle.
Start the engine, and as soon as it starts
running, disconnect cables A and B in
reverse order (2 - 4 - 5 - 3).
2

5.35
WIPER BLADES: REPLACEMENT (1/2)
Replacing windscreen wiper
blades 1
With the ignition on and engine
switched off, lower the windscreen
wiper stalk completely: they stop
slightly away from the bonnet.
Lift wiper arm 3, pull tab 2 (move-
ment A) and push the blade upwards.
To refit
Slide the blade along the arm until it
clips on. Make sure that the blade is
correctly locked in position. Return the
windscreen wiper stalk to the park po-
sition.
1
2
3
Check the condition of the wiper
blades. You are responsible for their
service life:
– clean the blades, windscreen and rear screen regularly with soapy
water;
– do not use them when the wind- screen or rear screen are dry;
– free them from the windscreen or rear screen when they have not
been used for a long time.
A
– In frosty weather, make
sure that the wiper blades
are not stuck by ice (to
avoid the risk of the motor
overheating).
– Check the condition of the wiper
blades.
Replace the wiper blades as soon
as they begin to lose efficiency
(approximately once a year).
Whilst changing the blade, take care
not to drop the arm onto the window
after it has been removed as this
may break the window.

5.42
OPERATING FAULTS (4/7)
On the roadPOSSIBLE CAUSESWHAT TO DO
Vibrations. Tyres not inflated to correct pres-
sures, incorrectly balanced or dam-
aged. Check the tyre pressures: if this is not the
problem, have them checked by an ap-
proved Dealer.
White smoke from the exhaust. In the diesel version, this is necessar-
ily a fault. Smoke may be caused by
particle filter regeneration. Refer to the information on “Special fea-
tures of diesel versions” in Section 2.
Smoke under the bonnet. Short-circuit or cooling system leak. Stop, switch off the ignition, stand away
from the vehicle and contact an approved
dealer.
The oil pressure warning light comes
on: while cornering or braking The level is too low. Top up the engine oil level (refer to the in-
formation on “Engine oil level: topping up,
filling” in Section 4).
is slow to go out or remains lit
under acceleration Loss of oil pressure.
Stop the vehicle and contact an approved
Dealer.

5.43
OPERATING FAULTS (5/7)
On the roadPOSSIBLE CAUSESWHAT TO DO
Steering becomes heavy. Assistance overheating.
Fault with the electric assistance
motor.
Fault in the assistance system. Drive carefully at reduced speed, be aware
of the level of force in the steering wheel
needed to turn the wheels. Consult an ap-
proved dealer
The engine is overheating. The cool-
ant temperature indicator is in the
warning zone and warning light
® comes on. Engine cooling fan not working. Stop the vehicle, switch off the engine and
contact an approved dealer.
Coolant leaks. Check the coolant reservoir: it should con- tain fluid. If there is no coolant, consult an
approved dealer as soon as possible.
Coolant boiling in the coolant reser-
voir. Mechanical fault: damaged cylinder
head gasket. Stop the engine.
Contact an approved dealer.
Radiator:
If there is a significant lack of coolant, remember that it must never b\
e topped up using cold coolant while
the engine is very warm. After any procedure on the vehicle which has involved even partial drain\
ing of the cooling
system, it must be refilled with a new mixture prepared in the correct p\
roportions. Reminder: only products approved
by our Technical Department may be used for this purpose.

6.1
Section 6: Technical specifications
Vehicle identification plates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . . . . . . . . . . . . 6.2
Engine identification plates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . . . 6.3
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5
Engine specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . . . . . . . . . . . . . . . . . 6.8
Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.9
Towing weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.9
Replacement parts and repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . . . . . . . . . 6.10
Service sheets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.11
Anticorrosion check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . . . . . . . . . . . . . . . . . . 6.17