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Operation
Things to note
If the v
ehicl
e is left parked for a long time im-
mediately after refuelling, the natural gas lev-
el indicator may not accurately indicate the
same level shown after refuelling when the
vehicle is started up again. This is not due to a
leak in the system, but to a drop in pressure in
the gas tank for technical reasons after a
cooling phase just after refuelling.
Note
In vehicles with natural gas engines, the
petrol t
ank fuel level gauge may display
the refuelled amount with a slight delay
(depending on the refuelled amount).
Engine coolant temperature indica-
t
or
.
Fig. 71
Analogue instrument panel: engine
cool
ant t
emperature indicator.
Fig. 72 Digital instrument panel: engine cool-
ant temper
ature indicator.
Cool zone. The engine has not r
eached
oper
ating temperature yet. Avoid high
speeds and stressing the engine if it has
not reached operating temperature.
Normal zone. At high outside tempera-
tures and when making the engine work
hard, the diodes may continue lighting up
and reach the upper zone. This is no
cause for concern, provided the control
lamp does not light up
Warning area. When the engine is work-
ing hard, especially at high outside tem-
peratures, the diodes may light up in the
warning area.
The coolant temperature gauge only works
when the ignition is switched on.
A
B
C
Control and warning lamp
It lights up red
Do not carry on driving!
Engine coolant l
evel too low, coolant temperature too
high.
Flashes red
Fault in the engine coolant system.
●
Stop the vehicle, switch off the engine and
let it cool do
wn.
●
Check the engine coolant level
››
›
page 269.
●
If the warning lamp does not switch off even
if the coolant level is correct, request assis-
tance from specialised personnel.
CAUTION
●
To ensur
e a long useful life for the engine,
avoid high revs, driving at high speed and
making the engine work hard for approxi-
mately the first 15 minutes when the engine
is cold. The phase until the engine is warm
also depends on the outside temperature. If
necessary, use the engine oil temperature*
›››
page 74
›››
page 75 as a guide.
●
Additional lights and other accessories in
front of the air inlet reduce the cooling ef-
fect of the coolant. At high outside temper-
atures and high engine loads, there is a risk
of the engine overheating.
80
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