jump start TOYOTA RAV4 PRIME 2021 Owners Manual (in English)
Page 539 of 616
5398-2. Steps to take in an emergency
8
When trouble arises
3Firmly depress the brake 
pedal and check that   
is displayed on the multi-
information display.
4 Press the power switch 
shortly and firmly.
In the event that the hybrid system 
still cannot be started, contact your 
Toyota dealer.
■Stopping the hybrid system
Shift the shift lever to P, set the 
parking brake and press the power 
switch as you no rmally do when 
stopping the hybrid system.
■Replacing the key battery
As the above proc edure is a tempo-
rary measure, it is recommended 
that the electronic key battery be 
replaced immediate ly when the bat-
tery is depleted. ( P.493)
■Changing power switch modes
Release the brake pedal and press 
the power switch in step  3 above.
The hybrid system does not start 
and modes will be changed each 
time the switch is pressed. 
(  P.283)
If you have a set of jumper (or 
booster) cables and a second 
vehicle with a 12-volt battery, 
you can jump start your vehicle 
by following the steps below.
1 Vehicles with alarm: Confirm 
that the electronic key is 
being carried.
When connecting the jumper (or 
booster) cables, depending on the 
situation, the alarm may activate 
and the doors locked. ( P.74)
2 Open the hood ( P.457) and 
fuse box cover.
Push claw   and   to com-
pletely release the lock, and then lift 
If the 12-volt battery is 
discharged
The following procedures 
may be used to start the 
hybrid system if the vehi-
cle’s 12-volt battery is dis-
charged.
You can also call your 
Toyota dealer or a qualified 
repair shop.
Restarting the hybrid sys-
tem
AB 
Page 540 of 616
5408-2. Steps to take in an emergency
up the cover.3Open the exclusive jump 
starting terminal cover.
4 Connect a positive jumper cable clamp to   on your vehicle and 
connect the clamp on the other end of the positive cable to   on  
the second vehicle. Then, connect a negative cable clamp to   
on the second vehicle and connect the clamp at the other end of 
the negative cable to  .
Exclusive jump starting terminal (your vehicle)
Positive (+) battery terminal (second vehicle)
Negative (-) battery term inal (second vehicle)
Solid, stationary, unpainted metallic point away from the exclu -
sive jump starting terminal and any moving parts as shown in th e 
illustration
5 Start the engine of the sec-
ond vehicle. Increase the 
engine speed slightly and  maintain at that level for 
approximately 5 minutes to 
A
B
C
D
A
B
C
D 
Page 541 of 616
5418-2. Steps to take in an emergency
8
When trouble arises
recharge the 12-volt battery 
of your vehicle.
6 Open and close any of the 
doors of your vehicle with the 
power switch off.
7 Maintain the engine speed of 
the second vehicle and start 
the hybrid system of your 
vehicle by turning the power 
switch to ON.
8 Make sure the “READY” indi-
cator comes on. If the indica-
tor light does not come on, 
contact your Toyota dealer.
9 Once the hybrid system has 
started, remove the jumper 
cables in the exact reverse 
order from which they were 
connected.
10 Close the exclusive jump 
starting terminal cover, and 
reinstall the fuse box cover to 
its original position.
Once the hybrid system starts, 
have the vehicle inspected at 
your Toyota dealer as soon as 
possible.
■Starting the hybrid system 
when the 12-volt battery is dis-
charged
The hybrid system cannot be 
started by push-starting.
■To prevent 12-vol t battery dis-
charge
●Turn off the headlights and the 
audio system while the hybrid sys-
tem is off.
●Turn off any unnec essary electri-
cal components when the vehicle  is running at a low speed for an 
extended period, such as in heavy 
traffic.
■When the 12-volt battery is 
removed or discharged
●Information stored in the ECU is 
cleared. When the 12-volt battery 
is depleted, have the vehicle 
inspected at you
r Toyota dealer.
●Some systems may require initial-
ization. (P.582)
■When removing the 12-volt bat-
tery terminals
When the 12-volt battery terminals 
are removed, the information stored 
in the ECU is cleared. Before 
removing the 12-vo lt battery termi-
nals, contact your Toyota dealer.
■Charging the 12-volt battery
The electricity stored in the 12-volt 
battery will discha rge gradually even 
when the vehicle i s not in use, due 
to natural dischar ge and the drain-
ing effects of certain electrical appli-
ances. If the vehicle is left for a long 
time, the 12-volt  battery may dis-
charge, and the hybrid system may 
be unable to start. (The 12-volt bat-
tery recharges automatically while 
the hybrid system is operating.)
■When recharging or replacing 
the 12-volt battery
●In some cases, it may not be pos-
sible to unlock the doors using the 
smart key system when the 12-
volt battery is discharged. Use the 
wireless remote c ontrol or the 
mechanical key to lock or unlock 
the doors.
●The hybrid syste m may not start 
on the first attemp t after reinstall-
ing the 12-volt battery. In that 
case, start the hybrid system in 
the same manner as when the 
electronic key  does not operate 
properly ( P.538). This is not a 
malfunction, as the hybrid system 
will start normally on the second 
attempt. 
Page 544 of 616
5448-2. Steps to take in an emergency
■If the high coolant tempera-
ture warning light comes 
on, flashes or “Engine 
Coolant Temp High Stop in 
a Safe Place See Owner’s 
Manual” is shown on the 
multi-information display
1 Stop the vehicle in a safe 
place and turn off the air con-
ditioning system, and then 
stop the hybrid system.
2 If you see steam:
Carefully lift the hood after 
NOTICE
■When handling jumper cables
When connecting the jumper 
cables, ensure that they do not 
become entangled in the cooling 
fan, etc.
■To prevent damaging the 
vehicle
The exclusive jump starting termi-
nal is to be used when charging 
the 12-volt battery from another 
vehicle in an emergency. It cannot 
be used to jump start another 
vehicle.
If your vehicle over-
heats
The following may indicate 
that your vehicle is over-
heating.
 The high coolant tempera-
ture warning light ( P.161) 
comes on or flashes, or a 
loss of hybrid system power 
is experienced. (For exam-
ple, the vehicle speed does 
not increase.)
 “Engine Coolant Temp High 
Stop in a Safe Place See 
Owner’s Manual” or “Hybrid 
System Overheated Output 
Power Reduced” is shown 
on the multi-information dis-
play.
 Steam comes out from 
under the hood.
Correction procedures