Page 26 of 219

24In briefAdaptive Forward Lighting
The system improves lighting of
curves and increases the headlight
range.
The beam pivots based on steering
wheel position and vehicle speed.
At higher speeds and continuous straight ahead travel, the beam
automatically raises slightly, thereby
increasing headlight range.
Adaptive forward lighting 3 111.
Diesel particle filter
The diesel particle filter system filters
harmful soot particles out of the
exhaust gases. The system includes
a self-cleaning function that runs
automatically during driving. The filter
is cleaned by burning off the soot
particles at high temperature. This
process takes place automatically
under set driving conditions and may take up to 25 minutes. Fuel
consumption may be higher during
this period. The emission of smells
and smoke during this process is
normal.
Under certain driving conditions, e.g.
short distances, the system cannot
clean itself automatically.
If the filter requires cleaning and
previous driving conditions did not
enable automatic cleaning, control
indicator ! flashes.
Further instructions 3 128.
Page 91 of 219

Instruments and controls89
Illuminates when the engine is
running Fault in the emission control system.
The permitted emission limits may be
exceeded. Immediately seek the
assistance of a workshop.
Flashes when the engine is
running
Fault that could lead to catalytic
converter damage. Ease up on the
accelerator until the flashing stops.
Seek the assistance of a workshop
immediately.
Service vehicle soon A illuminates or flashes yellow.
Illuminates when the engine is running Fault in engine or transmission
electronics 3 133, 3 137. The
electronics switch to an emergency
running programme. Fuel
consumption may be increased and
the vehicle handling may be impaired.If the fault persists after restarting the vehicle, consult a workshop.
Illuminates together with InSP4in the service display
Seek the assistance of a workshop for
draining the diesel fuel filter 3 102.
Flashes with switched on
ignition
Fault in the immobiliser system. The engine cannot be started 3 36.
Switch off the ignition and repeat the
start attempt.
If the control indicator continues
flashing, attempt to start the engine
using the spare key and seek the
assistance of a workshop.
Brake and clutch system R illuminates or flashes red.
Illuminated
Illuminates when the parking brake is released if the brake and clutch fluidlevel is too low 3 157.9 Warning
Stop. Do not continue your
journey. Consult a workshop.
Illuminates after the ignition is
switched on if the parking brake is
applied 3 140.
Flashes
On vehicles with manual transmission
automated, flashes for a few seconds
when the ignition is switched off if the parking brake is not applied.
On vehicles with manual transmission
automated, flashes when the driver's
door is opened if no gear is engaged
and the parking brake is not applied.
Antilock brake system
(ABS) u illuminates red.
Illuminates for a few seconds after the ignition is turned on. The system is
ready for operation when the control indicator goes out.
Page 104 of 219

102Instruments and controlsDrain diesel fuel filter
If there is water in the diesel fuel filter, the message InSP4 appears in the
instrument panel. Consult a
workshop.
Lighting
Important exterior lights, including cables and fuses, are monitored. In
trailer mode, trailer lighting is also
monitored. Trailers with LED lighting
must have an adapter that enables
light monitoring as with conventional
bulbs.The failed lighting will be indicated in
the information display or the
message InSP2 will appear in the
instrument panel display.
Anti-theft alarm system
System fault in anti-theft alarm
system. Have the cause of the fault
remedied by a workshop.
Tyre pressure
On vehicles with tyre pressure
monitoring system, if there is low tyre pressure, information which tyre to
check appears on the display.
Reduce speed and check tyre
pressure at the next opportunity. Tyre
pressure monitoring system 3 176.
Check tyre pressure 3 175, 3 206.
If there is a considerable loss of
pressure, a corresponding message
appears indicating the tyre.
Steer out of flow of traffic as quickly as possible without endangering
other vehicles. Stop and check the
tyres. Mount the spare wheel 3 182.
If run-flat tyres are fitted, maximum
speed is 80 km/h. Information 3 174.
Tyre pressure monitoring system
3 176.
Page 127 of 219

Driving and operating125Driving and operatingDriving hints............................... 125
Starting and operating ...............125
Engine exhaust .......................... 128
Automatic transmission .............. 129
Manual transmission ..................134
Manual transmission automa‐
ted .............................................. 135
Brakes ........................................ 139
Ride control systems .................140
Cruise control ............................. 142
Object detection systems ........... 143
Fuel ............................................ 145
Trailer hitch ................................ 147Driving hints
Control of the vehicleNever coast with engine not
running
Many systems will not function in this
situation (e.g. brake servo unit, power
steering). Driving in this manner is a
danger to yourself and others.
Pedals To ensure the pedal travel is
uninhibited, there must be no mats in
the area of the pedals.Starting and operating
New vehicle running-in Do not brake unnecessarily hard for
the first few journeys.
During the first drive, smoke may
occur because of wax and oil
evaporating off the exhaust system.
Park the vehicle in the open for a
while after the first drive and avoid
inhaling the fumes.
During the running-in period fuel and
engine oil consumption may be
higher and the cleaning process of the diesel particle filter may take
place more often. Diesel particle filter 3 128.
Page 130 of 219

128Driving and operatingEngine exhaust9Danger
Engine exhaust gases contain
poisonous carbon monoxide,
which is colourless and odourless and could be fatal if inhaled.
If exhaust gases enter the interior
of the vehicle, open the windows.
Have the cause of the fault
rectified by a workshop.
Avoid driving with an open load
compartment, otherwise exhaust
gases could enter the vehicle.
Diesel particle filter
The diesel particle filter system filters
harmful soot particles out of the
exhaust gases. The system includes
a self-cleaning function that runs
automatically during driving. The filter
is cleaned by burning off the soot
particles at high temperature. This
process takes place automatically
under set driving conditions and may
take up to 25 minutes. Fuel
consumption may be higher during
this period. The emission of smells
and smoke during this process is
normal.
Under certain driving conditions, e.g.
short distances, the system cannot
clean itself automatically.
If the filter requires cleaning and
previous driving conditions did not
enable automatic cleaning, control
indicator ! flashes. Continue driving,
keeping engine speed above 2000
revolutions per minute. Shift down if
necessary. Diesel particle filter
cleaning is then started.
Stopping the journey or switching off
the engine during cleaning is not
recommended.
Caution
If the cleaning process is
interrupted more than once, there
is a great risk of provoking severe
engine damage.
Cleaning takes place quickest at high
engine speeds and loads.
Page 171 of 219

Vehicle care169
No.Circuit12Mobile telephone, Infotainment
system, display13Courtesy light14Windscreen wiper15Windscreen wiper16Horn, ABS, brake light switch,
air conditioning system17Diesel fuel filter or air condi‐
tioning system18Starter19–20Horn21Engine electronics22Engine electronics23Headlight range adjustment24Fuel pump25–26Engine electronicsNo.Circuit27Heating, air conditioning
system, air quality sensor28–29Power steering30Engine electronics31Rear window wiper32Brake light switch33Headlight range adjustment,
light switch, clutch switch,
instrument, driver's door
module34Steering column control unit35Infotainment system36Cigarette lighter, front power
outletFuse assignments in
conjunction with load
compartment fuse box version BNo.Circuit1ABS2ABS3Interior fan electronic climate control4Interior fan heating and air
conditioning system5Radiator fan6Radiator fan7Windscreen washer system8Horn9Headlight washer system10Emergency unlocking of central
locking system11–12–
Page 172 of 219

170Vehicle care
No.Circuit13Fog light14Windscreen wiper15Windscreen wiper16Control module electronics,
Open&Start system, ABS,
brake light switch17Diesel fuel filter heating18Starter19Transmission electronics20Air conditioning system21Engine electronics22Engine electronics23Adaptive forward lighting, head‐
light range adjustment24Fuel pump25Transmission electronics26Engine electronics27Power steeringNo.Circuit28Transmission electronics29Transmission electronics30Engine electronics31Adaptive forward fighting, head‐ light range adjustment32Brake system, air conditioning
system, clutch switch33Adaptive forward lighting, head‐
light range adjustment, light
switch34Steering column control unit35Infotainment system36Mobile telephone, Infotainment
system, displayLoad compartment fuse
box
The fuse box is behind a cover. Press
the locking tabs forward and remove
the cover.
Do not store any objects behind the
cover.
Depending on the equipment, there
are two different fuse boxes.
Fuse box version A
To replace a fuse, remove the
relevant protective cap.
Page 208 of 219
206Technical dataCapacitiesEngine oilEngineA18XER, A18XELA17DTJA17DTRincluding Filter [l]4.55.45.4between MIN and MAX [l]1.01.01.0
Fuel tank
Petrol/diesel, nominal capacity [l]56Petrol, nominal capacity [l]14Tyre pressuresComfort with up to 3 peopleECO with up to 3 peopleWith full loadEngineTyresfrontrearfrontrearfrontrear[kPa/bar](psi)[kPa/bar] (psi)[kPa/bar] (psi)[kPa/bar] (psi)[kPa/bar]
(psi)[kPa/bar]
(psi)A18XEL,
A18XER195/65 R 15,200/2.0 (29)200/2.0 (29)250/2.5 (36)250/2.5 (36)210/2.1 (30)260/2.6 (38)205/55 R 16,225/45 R 17225/40 R 18220/2.2 (32)220/2.2 (32)––230/2.3 (33)280/2.8 (41)