2018 RENAULT MASTER check engine light

4.8
LEVELS (1/3)
 Brake fluid
This should be checked frequently,
and immediately if you notice even the
slightest loss in braking efficiency.
The level should be read with the engine
switched off and on level ground.Level 1
It is normal for the level to drop as the
brake shoes become worn, but it must
never drop lower than the “
MINI” warn-
ing line.
If you wish to check the disc and drum
wear yourself, you should obtain the
document explaining the checking pro-
cedure from our network or from the
manufacturer’s website.
Filling
After any operation on the hydraulic cir-
cuit, a specialist must replace the fluid.
Only use fluids approved by our
Technical Department (and taken from
a sealed container).
Replacement intervals
Refer to the Maintenance Document for
your vehicle.
Consult your approved dealer at
once if you notice an abnormal or
repeated drop in any of the fluid
levels.
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.
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).

4.13
When the ignition is off, some consu-
mers may also be switched off (dipped
beam headlights, radio, ventilation,
etc.). On the instrument panel, the mes-
sage “BATTERY MODE: ECONOMY”
appears when switched off. When the
level is extremely low, the message
“BATTERY LOW START ENGINE” is
displayed.
The charge status of the battery can
decrease, especially if you use your
vehicle:
– for short journeys;
– for driving in town;
– when the temperature drops;
– with the vehicle stopped and the engine off.
Replacing the battery
As this operation is complex, we advise
you to contact an approved Dealer.
BATTERY
123
456
This is located behind step A and does
not require maintenance. You should
not open it or add any fluid .
Depending on the vehicle, a system
continuously checks the battery charge
status.
Handle the battery with care as it contains sulphuric acid, which must n\
ot
come into contact with 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.
Label B
Observe the indications on the battery:
– 1 naked flames and smoking are for-
bidden;
– 2 eye protection required;
– 3 keep away from children;
– 4 explosive materials;
– 5 refer to the handbook;
– 6 corrosive materials.
The battery is a speci-
fic type, please ensure it
is replaced with the same
type. Consult an approved
dealer.
B
A

5.30
Fuses in the engine
compartment
Removing fuse box C
Remove screw 2 and remove coolant
reservoir 3. Unscrew the four screws
4.Turn unit 5 over to access the fuses in
the engine compartment.
To identify the fuses, refer to the fuse
allocation label (see the next page for
details), located on unit 5.
FUSES (3/5)
2
3
C4
4
5
No operations should be
carried out on the cooling
circuit when the engine is
hot.
Risk of burns.
Check that no water or dust enters
unit 5 when it is being removed/re-
fitted.
Deactivate the Stop and
Start function for any opera-
tion performed in the engine
compartment.
Please note when work-
ing close to the engine that
it may be hot. The engine
cooling fan may also start
at any moment. The
 warning
light in the engine compartment re-
minds you of this.
Risk of injury.

5.38
TOWING: breakdown (1/2)
The steering wheel must be un-
locked and the ignition key must be
in position M (ignition on) to provide
brake lights and hazard warning
lights on the towed vehicle. At night
the vehicle must have its lights on.
Unhitch the trailer, etc., if one is
being towed.
You must observe the towing regu-
lations which apply in the country in
which you are driving: do not exceed
the towing weight for your vehicle.
Contact an approved dealer.
– Use a rigid towing bar.
If a rope or cable is used
(where the law allows this),
the vehicle being towed
must be able to brake.
– A vehicle must not be towed if it is not fit to be driven.
– Avoid accelerating or braking suddenly when towing, as this
may result in damage being
caused to the vehicle.
– When towing a vehicle, it is ad- visable not to exceed 15 mph
(25 km/h).
When the engine is
stopped, steering and brak-
ing assistance are not op-
erational.
Do not remove the key from
the ignition when the vehi-
cle is being towed.
Towing a vehicle with a
sequential gearbox
If the gearbox is stuck in a gear:
– switch on the ignition;
– select neutral with the brake pedal depressed;
– check that the gearbox is in neutral (by pushing the vehicle for example).
If you cannot find neutral you must tow
the vehicle with the front wheels raised.
The vehicle should always be towed
with the ignition switched off.

5.43
On the roadPOSSIBLE CAUSESWHAT TO DO
Vibrations. Tyres not inflated to the correct pres-
sure, incorrectly balanced or dam-
aged. Check the tyre pressures: if this is not the
problem, have them checked by an ap-
proved dealer.
Coolant boiling in the coolant reservoir. Mechanical fault: damaged cylinder
head gasket.Stop the engine.
Contact an approved Dealer.
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 (refer to the informa-
tion on “Engine oil level – Topping up/refill-
ing” 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.
White smoke from the exhaust. This is not necessarily a fault. Smoke
may be caused by regeneration of
the particle filter. Refer to the information on “Special fea-
tures of diesel versions” in Section 2.
OPERATING FAULTS (2/5)

5.44
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 warning light and the
STOP warning light come 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.
OPERATING FAULTS (3/5)
Radiator: If there is a significant lack of coolant, remember that it must
never be 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 prepar\
ed
in the correct proportions. Reminder: only products approved by our Technical
Department may be used for this purpose.