Regular gas system checks
On natural gas-powered vehicles regular gas system
checks must be carried out at a specialist workshop.
The vehicle operator is responsible for ensuring
these tests are carried out properly.
For new cars, this is after 4 years and then every 2
years
▶
Check the gas system for leaks and carry out an
examination of gas containers
▶
Check the ller cap
▶
Check the condition of fuel ller tubes and the
sealing ring in the fuel ller tubes, and clean sealing
ring if necessary
Lifetime of the containers
The lifetime of the natural gas containers is max. 20
years.
›
Ensure the gas tanks are replaced at the appropri-
ate time.
Indicates the natural gas system test.
illuminates
Notication regarding the remaining days until
the natural gas system is checked
›
Ensure the test is carried out by a specialist com-
pany.
NOTICE
If the natural gas system is not tested by the due
date, the natural gas drive will not be available in
your vehicle.
Functionality
A natural gas vehicle also has a petrol en-
gine » page 153,
Natural gas operation display
illuminates
Automatically switching over from natural gas
mode to petrol mode
The vehicle automatically switches from natural gas
to petrol, for example, if the following situations oc-
cur.
Position of the sticker
▶
With an empty natural gas tank or insucient
pressure in the tank.
▶
After natural gas refuelling - the fuel system of the
vehicle determines the quality of natural gas.
▶
At very low ambient temperatures.
Gas gauge
A
The natural gas supply has reached the reserve
area.
WARNING
Danger of remaining in trac.
▶
After the indicator light illuminates Fill up with
petrol as soon as possible.
▶
Never fully empty the petrol tank.
▶
Track the range with natural gas in the drive data
menu item » page 58. Plan to ll up with natural
gas in good time.
Every six months, to ensure the correct function-
ing of the fuel system, it is recommended that the
fuel tank for petrol should be run down until the
warning light comes on.
run empty.
Requirements for refuelling
✓ Vehicle unlocked
✓ Ignition o
Relling
›
Open the tank ap.
›
Remove the cap A
from the natural gas
ller neck.
›
Plug the coupling of
the refuelling system
onto the ller neck and
start refuelling with
natural gas and while
doing so, follow the in-
structions given on the
refuelling system.
The refuelling system stops the refuelling process
automatically when the tank is full.
156
Engine, exhaust system and fuel › CNG (compressed natural gas)
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