Page 109 of 157

The fuel tank is full when the compressor of the refuelling system automatically
switches off. To stop the refuelling operation prematurely, press the
“Stop ” but-
ton of the refuelling system.
Closing the filler cap
› Check that the sealing ring 3
» Fig. 96
has remained in the gas filler tube. If it
has slipped onto the filling coupling, reinsert it into the gas filler tube.
› Plug the cap 1
onto the gas filler tube.
› Close the filler cap.
In the following situation, it is possible that the tank cannot be fully filled with
natural gas.
› At very high ambient temperatures. The natural gas refuelling systems have
overheating protection. When the ambient temperature reaches a predefined
value, the refuelling system automatically switches off.
› If the refuelling system has been in operation for a longer period, the filling
pressure of the natural gas refuelling system slightly drops. WARNING
■ Stop the engine before refuelling.
■ Always switch off your mobile phone, do not smoke and do not use open
flames when refuelling with natural gas – risk of explosion!
■ When refuelling, never get into the vehicle. If you have to get into your vehi-
cle in exceptional cases, close the door and touch a metal surface before you
touch the filling coupling again. This will avoid electrostatic discharges, which
may generate sparks. Sparks can cause a fire during refuelling. ■ Natural gas is highly explosive and flammable. Incorrect refuelling or improp-
er handling of natural gas can cause a fire, an explosion and injuries. Note
■ The natural gas system of your vehicle is suitable both for fuelling from small
compressors (slow fuelling) and for fuelling from natural gas stations with large
compressors (quick fuelling). ■ Noises that occur during refuelling represent no risk.
■ If the vehicle is parked for a longer period of time immediately after refuelling,
the situation may arise in which the pointer of the fuel tank gauge does not indi-
cate exactly the same level as was the case immediately after refuelling when the
engine is restarted. This is not due to any system leakages but a drop in pressure
in the natural gas fuel tank due to technical reasons after a cooling phase directly
after refuelling. ■
For frequent short-haul traffic, especially at low outside temperatures, the vehi-
cle is driven more frequently in petrol mode than in natural gas mode. This is why
the petrol tank runs empty faster than the natural gas tank.
■ The capacity of the natural gas tank is about 11 kg, of which about 1.5
kg are a
reserve.
■ The capacity of the petrol tank is about 10 l, of which about 5 l
are a reserve.Ð Automatically switching over from CNG mode to petrol mode
First read and observe the introductory information and safety warn-
ings on page 106.
The vehicle automatically switches over from CNG mode to petrol mode when the
following conditions are met:
› when starting the engine, if the coolant temperature is below 15 °C,
› when the natural gas tank is empty,
› after refuelling with natural gas. Ð Natural gas as fuel
First read and observe the introductory information and safety warn-
ings on page 106.
Natural gas is an alternative fuel for motor vehicles. Its main component is meth-
ane (CH 4). The rest is carbon dioxide and lower hydrocarbons.
The strict legal requirements for exhaust emissions of motor vehicles are decisive
for the current significance of natural gas. In direct comparison to all other fossil
fuels, natural gas is one of the fuels which cause the lowest emissions.
Natural gas is odourless and lighter than air. For safety reasons, it is saturated
with odorous substances, so that is perceived even in very small amounts. Ð
ä
ä
107
Inspecting and replenishing
Page 141 of 157

›
Press the locking mechanism 1
and carefully open the cover in the direction of
the arrow.
› After the fuse has been replaced, fold the cover upwards in the opposite direc-
tion of the arrow so that it audibly latches.
Fuse assignment on the underside of the dash panel No. Power consumer
1 Telephone, radiator fan, instrument cluster, engine control unit
2 Diagnostic connection, AC compressor
3 Clutch pedal switch, brake pedal switch
4 Daytime running lights 5 Switch wiring harness
6 Headlamp beam adjustment, exterior mirror adjustment
7-8 Automated transmission 9 Airbag
10 Park Assist 11 Low beam
12 Rear fog light
13 Low beam
14 Rear window wiper 15 Light switch
16 Steering force assistance 17 Windscreen washer
18 Reverse light switch 19 Injection valves, coolant pump
20 ABS/ESP, switch wiring harness 21 Switch illumination, number plate light
22 Daytime running lights
23 Light switch
24-26 Switch wiring harness 27 Interior light
28 Diagnostic connector 29 Central control unit
30 Exterior mirror heater 31 Cooler fan, regulator valve, lambda probe No. Power consumer
32 Turn signal, brake light
33 Main beam
34 Instrument cluster, main beam 35 Not assigned
36 Cigarette lighter, 12-volt power socket 37 Air blower for heating and air conditioning
38 Radio 39 Panoramic sliding roof, horn
40 Engine control unit 41 Central locking system
42 Ignition module
43 Seat heaters
44 Fuel pump 45 Light switch
46 Rear window heater 47 Power windows - right
48 Horn 49 Windscreen wipers50 Fog lights 51 Power windows - left Ð
139
Fuses and light bulbs
Page 152 of 157

Head-Thorax 84
Headlights Driving abroad 95
Head restraint 40
Heating 52
Exterior mirror 36
Rear window 33
recommended settings 53
Seats 39
Heating rear window 33
Horn 7
I
Ignition 58
Ignition lock 58
Immobiliser 57
Instrument cluster 8
ISOFIX 89
J
Jacking points Raise vehicle 131
Jump-starting 134
L
Lever Main beam 31
Turn signal 31
Light Cockpit 32
Daytime running light 30
Fog lights 30
Hazard warning light system 31
Headlight beam adjustment 30
Headlight flasher 32
Low beam 29
Main beam 31
Parking light 29, 30Rear fog light 30
Replacing bulbs 141
Turn signal 31
Lights Switching lights on and off 29
Loads 145
Lock Central locking system 22
Locking Door opening lever 22
Emergency locking 25
Remote control 24
Locking and unlocking from the inside 23
luggage compartment see luggage compartment lid 25
Luggage compartment Bag hooks 42
cover 43
Emergency unlocking 26
Fixing nets 43
Lashing eyes 42
Unlocking the luggage compartment lid 26
Luggage compartment lid 25
M
Mirror Additional interior mirror 36
Exterior 36
Vanity 33
Mobile phone 72
Multifunction display Functions 11
Memory 11
Operation 12
O
Oil refer to Engine oil 111Onboard computer
see Multifunction display 11
Operation in winter De-icing windows 100
Vehicle battery 117
Outside temperature 12
Overview Engine compartment 110
Warning lights 14
P
Paint see Paint damage 99
Paint damage 99
Parking Parking aid 62
Visual parking system 63
Parking ticket holder 50
Passive Safety 74
Periodic wiping 34
Petrol refer to Fuel 105
Polishing the paintwork refer to Taking care of your vehicle 99
Power steering 57
Power windows Button in the driver's door 27
Preservation refer to Taking care of your vehicle 99
R
Radiator fan 113
Radio reception Operating problem 100
Raise vehicle 131
Rear mirror Exterior 36
Interior 35
150 Index