Volvo XC40 2019 Owner's Manual page 401

heating. This includes: altering fuel injec-
tion settings or components, altering
emission system components or location
or removing components, and/or repeated
use of leaded fuel.
NOTE
Unleaded fuel is required for vehicles with
three-way catalytic converters.
Heated oxygen sensors
The heated oxygen sensors monitor the oxy-
gen content of the exhaust gases. Readings
are fed into a control module that continuously
monitors engine functions and controls fuel
injection. The ratio of fuel to air into the engine
is continuously adjusted for efficient combus-
tion to help reduce harmful emissions.
Related information
Octane rating (p. 397)
•
Fuel (p. 396)
•
Overheating of engine and
transmission
In certain driving conditions, such as driving
in mountainous areas or hot weather, there is
a risk of the engine or transmission overheat-
ing, especially when carrying heavy loads.
Engine power may be temporarily limited.
•
Remove any auxiliary lights mounted in
•
front of the grille when driving in hot
weather.
If the temperature in the engine's cooling
•
system becomes too high, a warning sym-
bol will appear in the instrument panel
along with the message Engine
temperature High temperature Stop
safely . Pull over to a safe location and let
the engine idle for a few minutes to cool
down.
If the message Engine temperature
•
High temperature Turn off engine
Engine coolant Level low, turn off
engine is displayed, stop the vehicle 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 be activated, the warning symbol
will illuminate and the message
Transmission warm Reduce speed to
lower temperature or Transmission hot
Stop safely, wait for cooling
played in the instrument panel. Follow the
recommendations given by reducing
speed or stopping the vehicle safely and
letting the engine idle for a few minutes to
let the transmission cool.
If the vehicle begins to overheat, the air
•
conditioning may be temporarily switched
off.
After a prolonged period of driving in
•
demanding conditions, do not turn off the
engine immediately after stopping.
NOTE
It is normal for the engine's cooling fan to
operate for a short time after the engine is
switched off.
Symbols in the instrument panel
Symbol Meaning
or
High engine temperature. Follow
the recommendations provided.
Low coolant level. Follow the
recommendations provided.
Transmission hot/overheated/
cooling. Follow the recommen-
will be dis-
dations provided.
STARTING AND DRIVING
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