609
8
8-2. Steps to take in an emergency
When trouble arises
a malfunction, as the hybrid system
will start normally on the second attempt.
●The power switch mode is memorized by the vehicle. When the 12-volt bat-tery is reconnected, the system will
return to the mode it was in before the 12-volt battery was discharged. Before disconnecting the 12-volt bat-
tery, turn the power switch off. If you are unsure what mode the power switch was in before the 12-volt
battery discharged, be especially careful when reconnecting the 12-volt battery.
■When replacing the 12-volt battery
●Use a 12-volt battery that conforms to European regulations.
●Use a 12-volt battery that the case size is same as the previous one
(LN2), 20 hours rate capacity (20HR) is equivalent (55Ah) or greater, and performance rating (CCA) is equiva-
lent (345A) or greater. • If the sizes differ, the 12-volt battery cannot be properly secured.
• If the 20 hour rate capacity is low, even if the time period where the vehi-cle is not used is a short time, the 12-
volt battery may discharge and hybrid system may not be able to start.
●Use a ventilation type calcium battery
●Use a 12-volt battery with a handle. If
a 12-volt battery without a handle is used, removal is more difficult.
●When removing the 12-volt battery: P.508
●After replacing, firmly attach the fol- lowing items to the exhaust hole of the 12-volt battery.
• Use the exhaust hose that was attached to the 12-volt battery before replacing and confirm that it is firmly
connected to the hole section of the vehicle.• Use the exhaust hole plug included
with the new 12-volt battery or the one installed on the battery prior to the replacement. (Depending on the new
12-volt battery installed, the exhaust
hole may be plugged.)
For details, consult any authorized
Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
Exhaust hole
Exhaust hose
Hole section of the vehicle
●The terminals can be connected to the body side when the negative terminal of the 12-volt battery is disconnected,
as shown in the illustration.
WARNING
■When removing the battery ter-
minals
Always remove the negative (-) termi- nal first. If the positive (+) terminal
contacts any metal in the surrounding area when the positive (+) terminal is removed, a spark may occur, leading
to a fire in addition to electrical shocks and death or serious injury.
A
B
C
6148-2. Steps to take in an emergency
mation display.
If the message does not disap-
pear: Stop the hybrid system
and contact any authorized
Toyota retailer or Toyota autho-
rized repairer, or any reliable
repairer.
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 any authorized
Toyota retailer or Toyota authorized repairer, or any reliable repairer.
WARNING
■When inspecting under the hood of your vehicle
Observe the following precautions.
Failure to do so may result in serious injury such as burns.
●If steam is seen coming from under
the hood, do not open the hood until the steam has subsided. The engine compartment may be very
hot.
●After the hybrid system has been
turned off, check that the “READY” indicator is off.When the hybrid system is operat-
ing, the gasoline engine may auto- matically start, or the cooling fan may suddenly operate even if the
gasoline engine stops. Do not touch or approach rotating parts such as the fan, which may lead to fingers
or clothing (especially a tie, a scarf or a muffler) getting caught, result-ing in serious injury.
●Do not loosen the coolant reservoir cap while the hybrid system and
radiator are hot. High temperature steam or coolant could spray out.
NOTICE
■When adding engine/power con-trol unit coolant
Add coolant slowly after the hybrid system has cooled down sufficiently. Adding cool coolant to a hot hybrid
system too quickly can cause dam- age to the hybrid system.
■To prevent damage to the cool-ing system
Observe the following precautions:
●Avoid contaminating the coolant with foreign matter (such as sand or dust, etc.).
●Do not use any coolant additive.
