check engine light RENAULT MASTER 2018 User Guide

2.18
DRIVING CORRECTION DEVICES AND AIDS (3/8)
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.
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 ABS”
appears on the instrument panel along
with the
© warning light.
Consult an approved dealer.
Driver assistance with a
trailer
This system helps to maintain control
over the vehicle while using a trailer.
It detects shaking caused by towing a
trailer under certain driving conditions.
Operating conditions
– The towbar must be approved by an authorised dealer;
– the harness must be approved by an authorised dealer;
– the towbar must be connected to the vehicle.
Operating principle
The function stabilises the vehicle by:
– asymmetric braking of the front wheels to reduce shaking caused by
the trailer;
– braking of all four wheels and limita- tion on engine torque to reduce the
vehicle speed until the shaking has
stopped.
Warning light
 flashes on the in-
strument panel to inform the driver.
Active emergency braking
Using the sensor 1, the system calcu-
lates the distance separating the vehi-
cle from the one in front and alerts the
driver if there is a risk of a front-end col-
lision. The driver can then brake the ve-
hicle to limit the damage arising from a
collision.
Note: Make sure that the sensor 1 is
not obscured (by dirt, mud, snow, etc.).
1

2.20
DRIVER CORRECTION DEVICES AND AIDS (5/8)
Active emergency braking
This function is an additional driving aid. This function is not under any
circumstances intended to replace the due care and attention of the
driver, who should at all times be in control of the vehicle.
System servicing/repairs
– In the event of an impact, the sensor alignment may become changed, and \
its operation will consequently be affected. Deactivate the function, then consult
an authorised dealer.
– Any work in the area where the radar is located (repairs, replacements,\
touch- ing up of paintwork) must be carried out by a qualified professional.
Only an authorised dealer is qualified to service the system.
In the event of system disturbance
Some conditions can disturb or damage the operation of the system, such \
as:
– a complex environment (metal bridge, tunnel etc.) ;
– poor weather conditions (snow, hail, black ice, etc.).
Risk of inadvertent braking.
Operating faults
The warning lights
 and 
lit up on the instrument panel accom-
panied by the message “WARNING
AEBSCHECK” indicate a system
fault. Consult an approved dealer.
When the system detects that the func-
tion is not available, the
 warn-
ing light lights up on the instrument
panel and stays on, with the message
“WARNING AEBS DISABLED”.
There are two possibilities:
– The system is temporarily disrupted (for example: radar obscured by
dirt, mud, snow etc.). In this case,
park the vehicle and switch off the
engine. Clean the detection zone of
the radar. When you next start the
engine, the warning light and the
message go out;
– If this is not the case, this may arise from another cause; contact an
Approved Dealer.

2.48
SEQUENTIAL GEARBOX (4/5)
Operation in automatic mode
Automatic mode is selected by default
every time the ignition is switched on.
The letter A appears on the display.
The vehicle is controlled using the ac-
celerator and the brake. Gears will
change automatically at the correct
moment and at a suitable engine speed
because the automatic mode takes the
road surface and the chosen driving
style into consideration.
Gears may be shifted manually in this
mode. Pushing the lever forwards
or backwards shifts a gear upwards
(except if there is a risk of underrev-
ving) or downwards (except if there is a
risk of overrevving).
Note: automatic mode takes account
of:
– the position and speed of depression of the accelerator pedal to assess
driving style and select the optimum
gear;
– action on the brake pedal, to com- mence engine braking in preparation
for a downshift.
You can stop the vehicle at red lights,
with the gear engaged, by depressing
the brake pedal; there is no need to
change to neutral (N).
The vehicle will move off again:
– either slowly, if you release the brake without accelerating (e.g. when in a
traffic jam);
– or quickly, if you release the brake and accelerate.
Accelerating and overtaking
– Slowly depress the accelerator pedal to accelerate gradually;
The oil level in the automatic gear-
box system reservoir varies depend-
ing on use. Adding oil is strictly
forbidden (except by qualified ap-
proved network personnel).
– to obtain maximum vehicle per-
formance regardless of the mode
selected (automatic or manual),
quickly depress the accelerator
pedal beyond the kickdown point.
The speed with which you depress the
pedal will allow you to downshift ac-
cording to the vehicle’s capabilities.
Parking the vehicle
It is possible to park in gear (for exam-
ple, on a slope):
– with the ignition on, select a gear with your foot on the brake ;
– check that a gear other than N is dis- played on the instrument panel, then
remove the ignition key;
– apply the handbrake.
To disengage the gear, switch on the
ignition without starting the engine and
shift the selector lever to neutral with
the brake pedal depressed . Check
that N is displayed on the instrument
panel.

2.49
SEQUENTIAL GEARBOX (5/5)
Load position
When the vehicle is driven loaded,
press the 6 switch on the dashboard.
The indicator light
§ on the instru-
ment panel will light up.
Load mode is deselected every time
the engine is switched off. It will be nec-
essary to select it again.
Load mode may be used to equal effect
in both automatic and manual modes.
6
Bleep– If you hold the vehicle on a slope for too long without applying the
brakes or handbrake, you will strain
the system (risk of overheating the
clutch).
In this case, an intermittent beep- ing sound will remind you that you
should put your foot on the brake
pedal or apply the handbrake.
– Never leave the vehicle with the engine running when in gear. For
safety reasons you will hear an in-
termittent beeping sound when you
open the door if you have not shifted
into neutral or you have not switched
off the ignition or depressed the
brake pedal.
Special circumstances
On a slippery surface or surface with
little grip, change to manual mode
(A/M) and select second gear before
accelerating to avoid wheelspin.
Operating faults
i
If this warning light comes on
when the vehicle is in motion , it
indicates a fault in the system. In most
cases, you may still drive the vehicle,
although it will not function perfectly.
Contact an approved dealer as soon as
possible.
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 exam-
ple).
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.

4.2
BONNET (1/2)
To open the bonnet, pull handle 1.
Unlocking the bonnet catch
To unlock, pull control 2.
In the event of even a slight
impact involving the radia-
tor grille or bonnet, have the
bonnet lock checked by an
authorised dealer as soon as pos-
sible.
1
2
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).

4.4
ENGINE OIL LEVEL: general information (1/2)
If the level is at the minimum
The “TOP-UP OIL LEVEL” message
and warning light
© are displayed
on the instrument panel.
It is vital to top up the oil as soon as
possible.
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 an 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.
The 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.
A
1
2
Minimum oil level display A
If the level is above the minimum
level
The “OIL LEVEL” message appears on
the display, accompanied by squares
indicating the level. These squares di-
sappear as the level drops and they are
replaced by dashes.
To switch to trip computer reading,
press button 1 or 2 again.

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.