Volvo S90 2019 Owner's Manual page 581

NOTE
If the conditions for measuring oil level are
not properly fulfilled (time after engine shut-
down, vehicle inclination, ambient tempera-
No value available
ture, etc.) the message
will be shown in the center display. This does
not mean that anything is wrong in the vehi-
cle systems.
Related information
Engine oil (p. 576)
•
Engine oil specifications (p. 634)
•
Ignition modes (p. 410)
•
Vehicle status (p. 568)
•
Refilling coolant
Coolant helps keep the combustion engine at
the right operating temperature. The heat trans-
ferred from the engine to the coolant can be
used to warm the passenger compartment.
When refilling coolant, follow the instructions on
the package. Never fill the cooling system with
only water. The risk of freezing is increased with
too low or too high amounts of coolant.
If there is coolant under the vehicle, smoke from
the cooling system, or if more than 2 liters (about
2 quarts) of coolant has been added to the sys-
tem, there could be something wrong with the
cooling system and starting the vehicle could
damage the engine. Call a tow truck and do not
attempt to start the engine.
WARNING
The coolant may be very hot. Never unscrew
the cap when the coolant is hot. If coolant
must be filled, unscrew the expansion tank
cap slowly to relieve overpressure.
MAINTENANCE AND SERVICE
Coolant expansion tank, left-hand drive vehicle.
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