Overheating The Engine And Transmission - Volvo XC 90 Owner's Manual

Overheating the engine and
transmission
In demanding driving conditions, such as when
transporting heavy loads, driving in mountainous
areas or in very hot weather there is a risk of
overheating the engine or transmission.
•
The engine's output may be slightly limited if
there is a risk of overheating.
•
Remove e.g., auxiliary lights mounted in front
of the grille in hot weather.
•
If the temperature of the engine coolant
becomes too high, the warning symbol will
Engine
illuminate and the message
temperature Stop safely
/ will be displayed.
Stop the vehicle as soon as possible in a
safe place and let the engine idle for several
minutes.
•
Engine temperature
If the message
temperature Turn off engine
coolant Stop safely
/ is displayed, stop
safely and turn off the engine.
•
If the transmission begins to overheat, an
alternative gear shifting program will be
selected. An integrated protective function
will also by activated, the warning symbol will
Transmission
illuminate and the message
warmHigh temperature Reduce speed
Transmission warmStop safely, wait
or
for cooling
will be displayed in the instru-
ment panel.
•
The air conditioning may be switched off
temporarily.
•
After a prolonged period of driving, do not
turn off the engine immediately after stop-
ping.
•
The engine cooling fan commonly continues
to run for several minutes after the engine
has been turned off.
WARNING
The cooling fan (located at the front of the
engine compartment, behind the radiator) may
start or continue to operate (for up to
6 minutes) after the engine has been
switched off.
Related information
•
Driving with a trailer (p. 345)
High
/
•
Before a long distance trip (p. 332)
Engine
or
STARTING AND DRIVING
Winter driving
Check your vehicle before the approach of cold
weather.
The following advice is worth noting:
•
Make sure that the engine coolant contains
50 percent antifreeze. Any other mixture will
reduce freeze protection. This gives protec-
tion against freezing down to –31 °F
(–35 °C). The use of "recycled" antifreeze is
not approved by Volvo. Different types of
antifreeze must not be mixed.
•
Volvo recommends using only genuine Volvo
antifreeze in your vehicle's radiator.
•
Try to keep the fuel tank well filled – this
helps prevent the formation of condensation
in the tank. In addition, in extremely cold
weather conditions it is worthwhile to add
fuel line de-icer before refueling.
•
The viscosity of the engine oil is important.
Oil with low viscosity (thinner oil) improves
cold-weather starting as well as decreasing
fuel consumption while the engine is warm-
ing up. Full synthetic 0W-30 oil is recom-
mended for driving in areas with sustained
low temperatures.
•
The load placed on the battery is greater dur-
ing the winter since the windshield wipers,
lighting, etc., are used more often. Moreover,
the capacity of the battery decreases as the
temperature drops. In very cold weather, a
poorly charged battery can freeze and be
damaged. It is therefore advisable to check
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