Toyota SIENNA 2022 Manual page 511

If the message does not disappear:
Stop the hybrid system and contact
your Toyota dealer.
If the message is not displayed:
Have the vehicle inspected at the
nearest Toyota dealer.
If "Hybrid System Over-
■
heated Output Power
Reduced" is shown on the
multi-information display
1
Stop the vehicle in a safe
place.
2
Stop the hybrid system and
carefully lift the hood.
3
After the hybrid system has
cooled down, inspect the
hoses and radiator core (radi-
ator) for any leaks.
Radiator
A
Cooling fan
B
If a large amount of coolant leaks,
immediately contact your Toyota
dealer.
4
The coolant level is satisfac-
tory if it is between the
7-2. Steps to take in an emergency
"FULL" and "LOW" lines on
the reservoir.
Reservoir
A
"FULL" line
B
"LOW" line
C
5
Add coolant if necessary.
Water can be used in an emer-
gency if power control unit coolant
is unavailable.
6
After stopping the hybrid sys-
tem and waiting for 5 minutes
or more, start the hybrid sys-
tem again and check for the
multi-information display.
If the message does not disappear:
Stop the hybrid system and contact
your Toyota dealer.
If the message is not displayed:
The hybrid system temperature has
dropped and the vehicle may be
driven normally.
However, if the message appears
again frequently, contact your
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