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132Climate controlAir conditioning regularoperation
In order to ensure continuously
efficient performance, cooling must
be operated for a few minutes once a
month, irrespective of the weather
and time of year. Operation with
cooling is not possible when the
outside temperature is too low.
Service For optimal cooling performance, it is recommended to annually check the
climate control system, starting
three years after initial vehicle
registration, including:
● functionality and pressure test
● heating functionality
● leakage check
● check of drive belts
● cleaning of condenser and evaporator drainage
● performance check
Notice
Refrigerant R-134a contains
fluorinated greenhouse gases.
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138Driving and operatingOtherwise an Autostop will be
inhibited.
Certain settings of the climate control
system may inhibit an Autostop. See
'Climate control' chapter for more
details 3 126.
Immediately after motorway driving,
an Autostop may be inhibited.
New vehicle running-in 3 135.
Vehicle battery discharge protection To ensure reliable engine restarts,
several battery discharge protection
features are implemented as part of
the stop-start system.
Power saving measures
During an Autostop, several electrical
features such as auxiliary electric
heater or rear window heating are
disabled or switched to a power
saving mode. The fan speed of the
climate control system is reduced to
save power.
Restart of the engine by the driver Depress the clutch pedal to restart the
engine.The engine start is indicated by the
needle at the idle speed position in
the tachometer.
If the selector lever is shifted out of
neutral before depressing the clutch
first, control indicator - illuminates
or is shown as a symbol in the Driver Information Centre.
Control indicator - 3 88.
Restart of the engine by the stop- start system
The selector lever must be in neutral to enable an automatic restart.
If one of the following conditions occurs during an Autostop, the
engine will be restarted automatically by the stop-start system:
● The stop-start system is manually deactivated.
● The bonnet is opened.
● The driver's seat belt is unfastened and the driver's door
is opened.
● The engine temperature is too low.● The charging level of the vehiclebattery is below a defined level.
● The brake vacuum is not sufficient.
● The vehicle is driven at least at walking speed.
● The climate control system requests an engine start.
● The air conditioning is manually switched on.
If the bonnet is not fully closed, a
warning message is displayed in the
Driver Information Centre.
If an electrical accessory, e.g. a
portable CD player, is connected to
the power outlet, a brief power drop
during restart might be noticeable.
Parking9 Warning
● Do not park the vehicle on an
easily ignitable surface. The
high temperature of the
exhaust system could ignite the
surface.
Page 207 of 263
Vehicle care205No.Circuit35Power windows, rain sensor,
exterior mirror36Climate control37–38Vacuum pump39Fuel system control module40Windscreen washer system41Right high beam (Halogen)42Radiator fan43Windscreen wiper44–45Radiator fan46–47Horn48Radiator fan49Fuel pump50Headlamp levelling, adaptive
forward lightingNo.Circuit51–52Auxiliary heater, diesel engine53Transmission control module,
Engine control module54Vacuum pump, instrument
panel cluster, heating ventila‐
tion, air conditioning system
After having changed defective fuses,
close the fuse box cover and press
until it engages.
If the fuse box cover is not closed
correctly, malfunctions may occur.
Instrument panel fuse box
In left-hand drive vehicles, the fuse
box is behind the storage
compartment in the instrument panel.
Open the compartment and push it to the left to unlock. Fold the
compartment down and remove it.
Page 208 of 263
206Vehicle care
In right-hand drive vehicles, the fuse
box is located behind a cover in the
glovebox. Open the glovebox, then
open the cover and fold it down.
No.Circuit1Displays2Body control unit, exterior lights3Body control unit, exterior lights4Infotainment system5Infotainment system, instru‐
ment6Power outlet, cigarette lighter7Power outlet8Body control module, left low
beam9Body control module, right low
beam10Body control module, door locks11Interior fan12Driver power seat13Passenger power seat14Diagnostic connector15Airbag16Boot lid relayNo.Circuit17Air conditioning system18Service diagnose19Body control module, brake
lights, tail lights, interior lights20-21Instrument panel22Ignition system23Body control module24Body control module25–26Trunk power outlet accessory
Load compartment fuse box
The fuse box is on the left side of the
load compartment behind a cover.
Page 211 of 263

Vehicle care209Vehicles with tyre repair kit and
flat load compartment floor
Some tools and the towing eye are
located together with the tyre repair
kit in a bag, which is fixed at the front left lashing eye in the load
compartment.
Wheels and tyres
Wheels
On vehicles with Diesel engines, no steel rims and only special, vehicle-
approved alloy wheels are permitted.
Tyre condition, wheel condition Drive over edges slowly and at right
angles if possible. Driving over sharp
edges can cause tyre and wheel
damage. Do not trap tyres on the kerb when parking.
Regularly check the wheels for
damage. Seek the assistance of a
workshop in the event of damage or
unusual wear.
Winter tyres
Winter tyres improve driving safety at temperatures below 7 °C and should
therefore be fitted on all wheels.
All tyre sizes are permitted as winter
tyres 3 246.
Use tyre size 245/45 R18 only as winter tyres.On vehicles with Diesel engines, no
steel rims and only special, vehicle-
approved alloy wheels are permitted.
In accordance with country-specific
regulations, affix the speed sticker in
the driver's field of view.
Tyre designations
E.g. 235/55 R 17 99 V235:Tyre width, mm55:Cross-section ratio (tyre height
to tyre width), %R:Belt type: RadialRF:Type: RunFlat17:Wheel diameter, inches99:Load index e.g. 99 is
equivalent to 775 kgV:Speed code letter
Speed code letter:
Q:up to 100 mphS:up to 112 mphT:up to 118 mphH:up to 130 mphV:up to 150 mphW:up to 168 mph
Choose a tyre appropriate for the
maximum speed of your vehicle.
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Vehicle care211
A detected low tyre pressure
condition is indicated by illumination
of control indicator w 3 91.
If w illuminates, stop as soon as
possible and inflate the tyres as
recommended 3 246.
If w flashes for 60-90 seconds then
illuminates continuously, there is a
fault in the system. Consult a
workshop.
After inflating, driving may be
required to update the tyre pressure
values in the Driver Information
Centre. During this time w may
illuminate.
If w illuminates at lower temperatures
and extinguishes after driving, this
could be an indicator for approaching a low tyre pressure condition. Check
tyre pressure.
Vehicle messages 3 99.
If the tyre pressure must be reduced
or increased, switch off ignition.
Only mount wheels with pressure
sensors, otherwise the tyre pressure
will not be displayed and w
illuminates continuously.
A spare wheel or temporary spare
wheel is not equipped with pressure
sensors. The tyre pressure
monitoring system is not operational
for these tyres. Control indicator w
illuminates. For the further three
wheels the system remains
operational.
The use of commercially-available liquid tyre repair kits can impair the
function of the system. Factory-
approved repair kits can be used.
Operating electronic devices or being
close to facilities using similar wave
frequencies could disrupt the tyre
pressure monitoring system.Each time the tyres are replaced, tyre pressure sensors must be
dismounted and serviced. For the
screwed sensor: replace valve core
and sealing ring. For clipped sensor:
replace complete valve stem.
Vehicle loading status
Adjust tyre pressure to load condition according to the tyre information labelor tyre pressure chart 3 246, and
select the appropriate setting in the
Tyre load menu in the Driver
Information Centre 3 93. This setting
is the reference for the tyre pressure
warnings.
The menu Tyre Load only appears if
the vehicle is at a standstill and the parking brake is applied. On vehicles
with automatic transmission, the
selector lever must be in P.
Page 234 of 263

232Service and maintenanceService and
maintenanceGeneral information ...................232
Service information ..................232
Recommended fluids, lubricants
and parts .................................... 233
Recommended fluids and lubricants ................................ 233General information
Service information In order to ensure economical and
safe vehicle operation and to
maintain the value of your vehicle, it
is of vital importance that all
maintenance work is carried out at the proper intervals as specified.
The detailed, up-to-date service
schedule for your vehicle is available
at the workshop.
Service display 3 85.
European service intervals
Maintenance of your vehicle is
required every 20,000 miles or after
1 year , whichever occurs first, unless
otherwise indicated in the service
display.
A shorter service interval can be valid
for severe driving behaviour, e.g. for
taxis and police vehicles.
The European service intervals are
valid for the following countries:Andorra, Austria, Belgium, Bosnia-
Herzegovina, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark,
Estonia, Finland, France, Germany,
Greece, Greenland, Hungary,
Iceland, Ireland, Italy, Latvia,
Liechtenstein, Lithuania,
Luxembourg, Macedonia, Malta,
Monaco, Montenegro, Netherlands,
Norway, Poland, Portugal, Romania, San Marino, Serbia, Slovakia,
Slovenia, Spain, Sweden,
Switzerland, United Kingdom.
Service display 3 85.
International service intervals Maintenance of your vehicle is
required every 10,000 miles or after
1 year , whichever occurs first, unless
otherwise indicated in the service
display.
Severe operating conditions exist if
one or more of the following
circumstances occur frequently: Cold starting, stop and go operation, trailer
operation, mountain driving, driving
on poor and sandy road surfaces,
increased air pollution, presence of
airborne sand and high dust content,
Page 245 of 263
Technical data243Vehicle weightKerb weight, basic model without any optional equipmentEngineManual transmissionAutomatic transmissionwithout/with air conditioning
[kg]B14NEL1701/1714–B14NET1701/1714–A16XHT–/1733–B16SHT–/1733–B16SHL––/1733A20DTH–/1816–/1816B20DTH–/1843–
Optional equipment and accessories increase the kerb weight.
Loading information 3 75.
Vehicle dimensionsLength [mm]4696Length max. when operating soft top [mm]4760Width without exterior mirrors [mm]1839Width with two exterior mirrors [mm]2020Height (without antenna) [mm]1443