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Owners Manual_Europe_M62060_en
2-1. Fuel cell vehicle
Fuel cell system
Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
Consult any authorized Toyota retailer
or Toyota authorized repairer, or any
reliable repairer if the hydrogen tanks
or valves need to be disposed.
Fuel cell stack coolant
Fuel cell stack coolant uses a specifi-
cally-designed fluid with high electrical
insulation properties, in order to safely
cool the high-voltage fuel cell stack.
Never add water or other coolants to
the fuel cell stack cooling system, as
they will cause permanent damage.
Consult any authorized Toyota retailer
or Toyota authorized repairer, or any
reliable repairer for replenishing or
changing the fuel cell stack coolant.
Ion filter
An ion filter is installed in the coolant
lines for the fuel cell stack, in order to
maintain the normal insulation proper-
ties of the coolant.
It is necessary to periodically change
the ion filter. (P.435) Contact any
authorized Toyota retailer or Toyota
authorized repairer, or any reliable
repairer for this periodic maintenance.
Tailpipe
When the power switch is turned off
and the fuel cell system is stopped
(P.180) after driving, exhaust water
is discharged. Be careful when stand-
ing behind the vehicle to avoid drip-
ping or spraying.
It is possible to manually purge the
exhaust. This may be desirable, for
instance, before parking in a garage.
This is done by pressing the H2O
switch. (P.194)
On cold days, water vapor in the
exhaust may appear as a white mist
emitted from the tailpipe. This is not a
malfunction. A white mist may be
emitted from the vehicle side depend-
ing on the wind direction. If it is a con-
cern, consult with a any authorized
Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
If the tailpipe is blocked, the fuel cell
system will stop.
In the following state when cold, a
white mist may be emitted. Water
vapor is being emitted as a system
protection and it is not a malfunction.
If several minutes have passed after
opening the fuel lid, such as refueling.
Several hours have passed after the
power switch was turned off.
Hydrogen detectors
When the power switch is turned to ON,
the hydrogen detectors are activated.
Power output restriction
When the power output is restricted, the
vehicle may fail to accelerate or even
decelerate, even though the accelerator
pedal is depressed. If a safe driving
speed cannot be maintained, stop the
vehicle in a safe place away from the
traffic. This may be caused by the fol-
lowing conditions:
The coolant temperature may be too
high. This can be caused by driving
conditions such as repeated sudden
acceleration and deceleration, contin-
uous driving on an incline, continuous
driving at high altitudes with a high
load, etc. In such situations, “FCV
system overheated Output power
reduced” is displayed on the multi-
information display, and the power
output is restricted. Once the coolant
returns to normal temperature, the
power output will return to normal.
(P.433)
The remaining fuel may be low. After
the low fuel level warning light comes
on, the output power will be gradually
restricted in order to extend the possi-
ble driving distance. Once getting to
this point, the remaining driving dis-
tance possible is short. Immediately
refill the vehicle with hydrogen.
On cold days, the low fuel level warn-
ing light comes on faster than usual
and the output power is restricted.
95


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