Page 206 of 297

204Driving and operating
Fuel selector
Pressing button Y switches between
petrol and natural gas operation.
Switching is not possible at high loads
(e.g. strong acceleration, running at
full throttle). The LED status shows
the current operating mode.
1 off=natural gas
operation.1 illumi‐
nates=petrol operation.1 flashes=no switching is
possible, one type of
fuel is empty.As soon as the natural gas tank is
empty, petrol operation is
automatically engaged until the
ignition is switched off.
If the natural gas tank is not refuelled, the system must be manually
switched to petrol operation before
the engine is started-up again. This
will prevent damage to the catalytic
converter (overheating caused by
irregular fuel supply).
If the selector switch is operated
several times within a short time, a
switchover block is activated. The engine remains in the current
operating mode. The block remains
active until the ignition is switched off.
A slight loss of power and torque can be expected during petrol operation.
You must therefore adapt your driving
style (e.g. during overtaking
manoeuvres) and vehicle loads (e.g.
towing loads) accordingly.
Every six months run the petrol tank
down until control indicator Y
illuminates, then refuel. This isnecessary to maintain fuel quality as
well as system function necessary for
petrol operation.
Fill the tank completely at regular intervals to prevent corrosion in the
tank.
Fuel for liquid gas
operation Liquid gas is known as LPG
(Liquefied Petroleum Gas) or under its French name GPL (Gaz de Pétrole Liquéfié). LPG is also known as
Autogas.
LPG consists mainly of propane and
butane. The octane rating is between
105 and 115, depending on the
butane proportion. LPG is stored
liquid at around 5 - 10 bar pressure.
The boiling point depends on the
pressure and mixing ratio. At ambient pressure, it is between -42 °C (pure
propane) and -0.5 °C (pure butane).
Page 219 of 297

Vehicle care217Vehicle careGeneral Information...................217
Vehicle checks ........................... 218
Bulb replacement .......................226
Electrical system ........................234
Vehicle tools .............................. 241
Wheels and tyres .......................241
Jump starting ............................. 257
Towing ....................................... 258
Appearance care .......................260General Information
Accessories and vehicle
modifications
We recommend the use of genuine parts and accessories and factory
approved parts specific for your
vehicle type. We cannot assess or
guarantee reliability of other products
- even if they have a regulatory or
otherwise granted approval.
Do not make any modifications to the electrical system, e.g. changes of
electronic control units (chip tuning).Caution
When transporting the vehicle on
a train or on a recovery vehicle, the
mud flaps might be damaged.
Vehicle storage
Storage for a long period of time
If the vehicle is to be stored for several months:
■ Wash and wax the vehicle.
■ Have the wax in the engine compartment and underbody
checked.
■ Clean and preserve the rubber seals.
■ Fill up fuel tank completely.
■ Change the engine oil.
■ Drain the washer fluid reservoir.
■ Check the coolant antifreeze and corrosion protection.
■ Adjust tyre pressure to the value specified for full load.
■ Park the vehicle in a dry, well ventilated place. Engage first orreverse gear or set selector lever to P . Prevent the vehicle from rolling.
■ Do not apply the parking brake.
Page 268 of 297

266Service and maintenance
Select the appropriate engine oil
based on its quality and on the
minimum ambient temperature
3 269.
Additional engine oil additives
The use of additional engine oil
additives could cause damage and
invalidate the warranty.
Engine oil viscosity grades
The SAE viscosity grade gives
information of the thickness of the oil.
Multigrade oil is indicated by two
figures, e.g. SAE 5W-30. The first
figure, followed by a W, indicates the
low temperature viscosity and the
second figure the high temperature viscosity.
Select the appropriate viscosity grade
depending on the minimum ambient
temperature 3 269.
All of the recommended viscosity
grades are suitable for high ambient
temperatures.Coolant and antifreeze
Use only organic acid type-long life
coolant (LLC) antifreeze approved for
the vehicle. Consult a workshop.
The system is factory filled with
coolant designed for excellent
corrosion protection and frost
protection down to approx. -28 °C. In
northern countries with very low
temperatures the factory filled coolant
provides frost protection down to
approx. -37 °C. This concentration
should be maintained all year round.
The use of additional coolant
additives that intend to give additional
corrosion protection or seal against
minor leaks can cause function
problems. Liability for consequences
resulting from the use of additional
coolant additives will be rejected.
Brake and clutch fluid
Over time, brake fluid absorbs
moisture which will reduce braking
effectiveness. The brake fluid should
therefore be replaced at the specified
interval.AdBlue
Only use AdBlue to reduce the
nitrogen oxides in the exhaust
emission 3 160.
Page 271 of 297
Technical data269Vehicle dataRecommended fluids and lubricantsEuropean service scheduleRequired engine oil qualityAll European countries
(except Belarus, Moldova, Russia, Turkey)
Only Israel
Engine oil qualityPetrol engines
(including CNG, LPG, E85)Diesel enginesPetrol engines
(including CNG, LPG, E85)Diesel enginesdexos 1––✔–dexos 2✔✔–✔
In case dexos quality is unavailable you may use max. 1 litre engine oil quality ACEA C3 once between each oil change.
Engine oil viscosity grades
All European countries and Israel (except Belarus, Moldova, Russia, Turkey)Ambient temperaturePetrol and diesel enginesdown to -25 °CSAE 5W-30 or SAE 5W-40below -25 °CSAE 0W-30 or SAE 0W-40
Page 272 of 297
270Technical data
International service scheduleRequired engine oil qualityAll countries outside Europe except Israel
Only Belarus, Moldova, Russia, Turkey
Engine oil qualityPetrol engines
(including CNG, LPG, E85)Diesel enginesPetrol engines
(including CNG, LPG, E85)Diesel enginesdexos 1✔–––dexos 2–✔✔✔
In case dexos quality is unavailable you may use the oil qualities listed below:
All countries outside Europe except Israel
Only Belarus, Moldova, Russia, Turkey
Engine oil qualityPetrol engines
(including CNG, LPG, E85)Diesel enginesPetrol engines
(including CNG, LPG, E85)Diesel enginesGM-LL-A-025✔–✔–GM-LL-B-025–✔–✔
Page 273 of 297
Technical data271
All countries outside Europeexcept Israel
Only Belarus, Moldova, Russia, Turkey
Engine oil qualityPetrol engines
(including CNG, LPG, E85)Diesel enginesPetrol engines
(including CNG, LPG, E85)Diesel enginesACEA A3/B3✔–✔–ACEA A3/B4✔✔✔✔ACEA C3✔✔✔✔API SM✔–✔–API SN resource conserving✔–✔–
Engine oil viscosity grades
All countries outside Europe (except Israel),
including Belarus, Moldova, Russia, TurkeyAmbient temperaturePetrol and diesel enginesdown to -25 °CSAE 5W-30 or SAE 5W-40below -25 °CSAE 0W-30 or SAE 0W-40down to -20 °CSAE 10W-30 1)
or SAE 10W-40 1)1)
Permitted, but usage of SAE 5W-30 or SAE 5W-40 with dexos quality is recommended.
Page 274 of 297
272Technical dataEngine dataSales designation1.41.41.4 LPG1.6 CNGEngine identifier codeB14NELB14NETB14NETB16XNTNumber of cylinders4444Piston displacement [cm3
]1364136413641598Engine power [kW]88103103110at rpm4200-60004900-600049005000Torque [Nm]200200200210at rpm1850-42001850-49001850-49002300Fuel typePetrolPetrolLiquid gas/PetrolNatural gas/PetrolOctane rating RONrecommended95959595possible98989898possible91919191Gas––LPGCNGEngine oil consumption [l/1000 km] 2)0.60.60.60.62)
Maximum value.
Page 275 of 297
Technical data273
Sales designation1.61.61.81.8Engine identifier codeA16SHTA16XHTA18XELA18XERNumber of cylinders4444Piston displacement [cm3
]1598159817961796Engine power [kW]14712585103at rpm5500600056006300Torque [Nm]280260175175at rpm1650-35001650-320038003800Fuel typePetrolPetrolPetrolPetrolOctane rating RONrecommended98989595possible95959898possible91919191Gas––––Engine oil consumption [l/1000 km] 2)0.60.60.60.62)
Maximum value.