engine TOYOTA RAV4 PLUG-IN HYBRID 2021 Repair Manual

579
8
8-2. Steps to take in an emergency
When trouble arises
A warning message about an operation
of the brake pedal m ay be shown while
the driving suppor t systems such as
PCS (Pre-Collis ion system) (if
equipped) or the dynamic radar cruise
control with full- speed range (if
equipped) is operating. If a warning
message is shown, be sure to deceler -
ate the vehicle or follow an instruction
shown on the multi-in formation display.
• A warning message is shown when
Brake Override System operates. ( →P.301, 574)
• A warning message is shown when
Drive-Start Control or Parking Support Brake function (if equipped) operates
( →P.301, 420). Follow the instructions
on the multi-information display.
●If a message about an operation of
the power switch is shown
An instruction for operation of the power
switch is shown when the incorrect pro -
cedure for starting the hybrid system is
performed or the power switch is oper -
ated incorrectly. Follow the instructions
shown on the multi-in formation display
to operate the pow er switch again.
●If a message about a shift lever opera-
tion is shown
To prevent the shift lever from being
operated incorrectly or the vehicle from
moving unexpectedly, a message that
requires shifting the shift lever may be
shown on the multi-in formation display.
In that case, follow the instruction of the
message and shift the shift lever.
●If a message or image about an
open/close state of a part or replen-
ishment of a consumable is shown
Confirm the part indicated by the multi-
information display or a warning light,
and then perform the coping method
such as closing the open door or replen -
ishing a consumable.
■If a message that indicates the
need for visiting any authorized Toyota retailer or Toyota autho -
rized repairer, or any reliable
repairer is displayed
The system or part sh own on the multi-
information display is malfunctioning.
Have the vehicle inspected by any authorized Toyota r etailer or Toyota
authorized repairer, or any reliable
repairer immediately.
■If a message that indicates the need for referring to Owner’s Man -
ual is displayed
●If the following messages are shown,
follow the instructions, accordingly.
• “Blind Spot Monitor Unavailable” ( →P.394, 578)
• “RCTA Unavailable” ( →P.394, 578)
• “Engine Coolant Temp High” ( →P.611)
• “Exhaust Filter Full” ( →P.437)
●If the following messages are shown,
there may be a malfunction. Immedi -
ately stop the vehicle in a safe place and contact any authorized Toyota
retailer or Toyota authorized repairer,
or any reliable repairer. Continuing to drive the vehicle may be dangerous.
• “Plug-in charging system malfunction”
• “Hybrid System Malfunction” • “Charging System Malfunction”
• “Check Engine”
• “Hybrid Battery System Malfunction” • “Accelerator System Malfunction”
• “Smart Entry & Start System Malfunc -
tion”
●If the following messages are shown,
there may be a malfunction. Immedi - ately have the vehi cle inspected by
any authorized Toyota retailer or
Toyota authorized repairer, or any reli -
able repairer. • “Oil Pressure Low”
• “Braking Power Low”
●If any of the following messages are
shown on the multi-information dis -
play, the vehicle ma y have run out of fuel. Stop the vehicle in a safe place
and, if the fuel leve l is low, refuel the

5808-2. Steps to take in an emergency
vehicle.
• “Hybrid System Stopped” • “Engine Stopped”
●If “Maintenance required for DCDC converter cooling parts See Owner’s
Manual” is shown, the filter may be
clogged, the air intake vent may be blocked, or there may be a gap in the
duct. Therefore, perform the following
correction procedure. • If the air intake v ent or filter of the
DC/DC converter are dirty, perform
the procedures on P.536 to clean them.
• If the warning message is shown
when the air intake vent and filter of the DC/DC converter are not dirty,
have the vehicle inspected at any
authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer.
●If “12-Volt Battery Charging System
Malfunction Stop in a Safe Place See
Owner’s Manual” is shown
Indicates a malfunct ion in the vehicle’s
charging system. Pull over and stop the
vehicle as soon as it is safe to do so.
While the message is displayed, the
functions of the air conditioning, etc.
may be partially limited in order to
reduce the power consumption of the
12-volt battery.
■If “Hybrid System Overheated Out - put Power Reduced” is shown
The message may be shown when driv -
ing under severe ope rating conditions. (For example, when driving up a long
steep hill or drivi ng up a steep hill in
reverse.)
Coping method: →P.611
■If “Traction Battery Needs to be Protected Refrain from the Use of N
Position” is shown
This message may be displayed when the shift lever is in N.
As the hybrid battery (traction battery)
cannot be charged when the shift lever
is in N, shift the shift lever to P when the
vehicle is stopped.
■If “Traction Battery Needs to be Protected Shift into P to Restart” is
shown
This message is displayed when the hybrid battery (trac tion battery) charge
has become extremely low because the
shift lever has been left in N for a certain amount of time.
When operating the vehicle, shift to P
and restart the hybrid system.
■If “Shift to P when Parked” is shown
Message is displayed when the driver’s
door is opened without turning the power switch to OFF with the shift lever
in any position other than P.
Shift the shif t lever to P.
■If “Shift is in N Release Accelerator Before Shifting” is shown
Message is displaye d when the acceler-
ator pedal has been depressed and the shift lever is in N. Release the accelera -
tor pedal and shift the shift lever to D or
R.
■If “Press Brake when Vehicle is Stopped Hybrid System may Over -
heat” is shown
Message is displaye d when the acceler- ator pedal is depressed to maintain the
vehicle position when stopped on a
upward slope, etc.
If this continues, the hybrid system may
overheat.
Release the accelerator pedal and depress the brake pedal.
■If “Auto Power OFF to Conserve
Battery” is shown
Power was turned off due to the auto -
matic power o ff function.
Next time when starting the hybrid sys -
tem, operate the hybrid system for
approximately 5 minutes to recharge the 12-volt battery.

581
8
8-2. Steps to take in an emergency
When trouble arises
■If “Engine Oil Level Low Add or
Replace” is displayed
The engine oil level may be low. Check
the level of the engine oil, and add
engine oil if necessary. This message may be displayed if the vehicle is
stopped on a slope. Move the vehicle to
a level surface and check if the mes - sage disappears.
■If a message that indicates the mal -
function of fron t camera is dis-
played (if equipped)
The following systems may be sus -
pended until the prob lem shown in the
message is resolved. ( →P.353, 568)
●PCS (Pre-Collision System)*
●LTA (Lane Tracing Assist)*
●Automatic High Beam*
●RSA (Road Sign Assist)*
●Dynamic radar cruise control with full-
speed range*
*: If equipped
■If “Radar Cruise Control Unavail -
able See Owner ’s Manual” is
shown (if equipped)
The dynamic radar cru ise control with full-speed range system (if equipped) is
suspended temporarily or until the prob -
lem shown in the message is resolved. (causes and coping methods: →P.353)
■If “Radar Cruise Control Unavail-
able” is shown (if equipped)
The dynamic radar cru ise control with full-speed range system (if equipped)
cannot be used temporarily. Use the
system when it bec omes available again.
■Warning buzzer
→ P.576
WARNING
■If a warning light comes on or a
warning buzzer sounds when a
warning message is shown on the multi-information display
→ P.577
NOTICE
■“High Power Consumption Par- tial Limit On AC/Heater Opera -
tion” is frequently shown
There is a possible malfunction relat - ing to the chargin g system or the 12-
volt battery may b e deteriorating.
Have the vehicle inspected by any authorized Toyota retailer or Toyota
authorized repairer, or any reliable
repairer.
■If “Maintenance required For
Traction Battery A t Your Dealer” is shown
The hybrid battery (traction battery) is
scheduled to be inspected or
replaced. Have the vehicle inspected by any authorized Toyota retailer or
Toyota authorized repairer, or any
reliable repairer immediately.
●Continuing to drive the vehicle with -
out having the hybr id battery (trac-
tion battery) inspected will cause the hybrid system not to start.
●If the hybrid system does not start, contact any autho rized Toyota
retailer or Toyota authorized
repairer, or any reliable repairer immediately.

6008-2. Steps to take in an emergency
WARNING
■When using the compact spare
tire
●Remember that the compact spare tire provided is specifically
designed for use with your vehicle.
Do not use your compact spare tire on another vehicle.
●Do not use more than one compact
spare tire simultaneously.
●Replace the compact spare tire with
a standard tire as soon as possible.
●Avoid sudden acceleration, abrupt
steering, sudden braking and shift - ing operations that cause sudden
engine braking.
■When the compact spare tire is
attached
The vehicle speed may not be cor - rectly detected, and the following sys -
tems may not oper ate correctly:
• ABS & Brake assist
• VSC/Trailer Sway Control
•TRC
• Cruise control (if equipped)
• Dynamic radar cruise control with
full-speed range (if equipped)
• PCS (Pre-Collision System) (if
equipped)
• EPS
• LTA (Lane Tracing Assist) (if
equipped)
• Tire pressure warning system
• AHB (Automatic High Beam) (if equipped)
• BSM (Blind Spot Monitor) (if equipped)
• Rear view monitor system (if equipped)
• Panoramic view monitor (if equipped)
• Toyota parking assist monitor (if equipped)
• Toyota parking assist-sensor (if equipped)
• PKSB (Parking Support Brake) (if equipped)
• Navigation system (if equipped)
Also, not only can the following sys-
tem not be utilized fully, but it may actually negatively affect the drive-
train components:
• E-Four (Electro nic On-Demand AWD system)
■Speed limit when using the com - pact spare tire
Do not drive at speeds in excess of 80
km/h (50 mph) when a compact spare tire is installed on the vehicle.
The compact spare tire is not
designed for driving at high speeds. Failure to observe this precaution
may lead to an accident causing
death or serious injury.
■After using the tools and jack
Before driving, make sure all the tools and jack are securely in place in their
storage location to reduce the possi -
bility of personal i njury during a colli- sion or sudden braking.
NOTICE
■Be careful when driving over
bumps with the compact spare
tire installed on the vehicle
The vehicle height may become lower
when driving with the compact spare
tire compared to w hen driving with standard tires. Be careful when driv-
ing over uneven road surfaces.

607
8
8-2. Steps to take in an emergency
When trouble arises
Push claw ( ) and ( ) to com -
pletely release the lock, and then lift up the cover.
3 Open the exclusive jump start-
ing terminal cover.
4 Connect a positive jumper cable clamp to on your vehicle and con-
nect the clamp on the other end o f the positive cable to on the sec-
ond vehicle. Then, connect a ne gative 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 terminal (second vehicle)
Solid, stationary, unpainted metallic point away from the exclu sive jump
starting terminal and any moving parts as shown in the illustra tion
5 Start the engine of the second
vehicle. Increase the engine
speed slightly and maintain at
that level for a pproximately 5
AB
A
B
C
D
A
B
C
D

6088-2. Steps to take in an emergency
minutes to 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” indica-
tor comes on. If the indicator
light does not come on, contact
any authorized Toyota retailer or
Toyota authorized repairer, or
any reliable repairer.
9 Once the hybrid system has
started, remove the jumper
cables in the exact reverse
order from which they were con -
nected.
10 Close the exclusive jump start-
ing terminal cover, and reinstall
the fuse box cover to its original
position.
Once the hybrid system starts,
have the vehicle inspected at any
authorized Toyota retailer or Toyota
authorized repairer, or any reliable
repairer as soon as possible.
■Starting the hybrid system when
the 12-volt battery is discharged
The hybrid system c annot be started by push-starting.
■To prevent 12-volt battery dis -
charge
●Turn off the headlights and the audio
system while the hybrid system is off.
●Turn off any unnecessary electrical
components when the vehicle is run - ning 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 any authorized Toyota retailer or
Toyota authorized repairer, or any reli - able repairer.
●Some systems may r equire initializa- tion. ( →P.643)
■When removing the 12-volt battery
terminals
When the 12-volt batte ry terminals are removed, the in formation stored in the
ECU is cleared. Before removing the 12-
volt battery termi nals, contact any authorized Toyota r etailer or Toyota
authorized repairer, or any reliable
repairer.
■Charging the 12-volt battery
The electricity stor ed in the 12-volt bat-
tery will discharge gr adually even when
the vehicle is not in use, due to natural discharge and the dr aining effects of
certain electrical appliances. If the vehi -
cle is left for a long time, the 12-volt bat- tery may discharge, and the hybrid
system may be unable t o start. (The 12-
volt battery recharges automatically while the hybrid syst em is operating.)
■When recharging or replacing the
12-volt battery
●In some cases, it may not be possible
to unlock the doors using the smart
entry & start system when the 12-volt
battery is discharged. Use the wire - less remote control o r the mechanical
key to lock or unlock the doors.
●The hybrid system may not start on
the first attempt after reinstalling the
12-volt battery. In t hat case, start the hybrid system in t he same manner as
when the electr onic key does not
operate properly ( →P.605). This is not

611
8
8-2. Steps to take in an emergency
When trouble arises
■If the high coolant temperature
warning light comes on,
flashes or “Engine Coolant
Temp High Stop in a Safe
Place See Owner’s Manual” is
shown on the multi-informa -
tion display
1 Stop the vehicle in a safe place
and turn off the air conditioning
system, and then stop the hybrid
system.
2 If you see steam:
Carefully lift th e hood after the
steam subsides.
If you do no t see steam:
Carefully lift the hood.
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 terminal
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 overheats
The following may indicate that
your vehicle is overheating.
 The high coolant temperature
warning light ( →P.170) comes
on or flashes, or a loss of
hybrid system power is experi -
enced. (For example, the vehi -
cle 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 display.
 Steam comes out from under
the hood.
Correction procedures

6128-2. Steps to take in an emergency
3After the hybrid system has
cooled down sufficiently, inspect
the hoses and radiator core
(radiator) for any leaks.
Radiator
Cooling fan
If a large amount of coolant leaks,
immediately contac t any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
4 The coolant level is satisfactory
if it is between the “FULL” and
“LOW” lines on the reservoir.
Reservoir
“FULL” line
“LOW” line
5 Add coolant if necessary.
Water can be used in an emergency if
engine coolant is unavailable.
If water was added in an emergency,
have the vehicle i nspected at any
authorized Toyota r etailer or Toyota authorized repairer, or any reliable
repairer as soon as possible.
6 Start the hybrid system and turn
the air conditioning system on to
check that the radiator cooling
fan operates and to check for
coolant leaks from the radiator
or hoses.
The fan operates when the air condi -
tioning system is turned on immediately
after a cold start. Confirm that the fan is operating by check ing the fan sound
and air flow. If it is difficult to check
these, adjust the temperature control switch to “LO” and turn the “A/C” switch
ON and OFF. After t his, turn the air
conditioning system o n and off repeat- edly. (The fan may not operate in freez-
ing temperatures.)
7 If the fan is not operating:
Stop the hybrid system immedi -
ately and contact any authorized
Toyota retailer or Toyota autho -
rized repairer, or any reliable
repairer.
If the fan is operating:
Have the vehicle inspected at
the nearest authorized Toyota
retailer or Toyota authorized
repairer, or any reliable repairer.
A
B
A
B
C

613
8
8-2. Steps to take in an emergency
When trouble arises
8 Check if “Engine Coolant Temp
High Stop in a Safe Place See
Owner’s Manual” is shown on
the multi-information display.
If the message does not disap -
pear:
Stop the hybrid system and con -
tact any authorized Toyota
retailer or Toyo ta authorized
repairer, or any reliable repairer.
If the message is not displayed:
Have the vehicle inspected at
the nearest authorized Toyota
retailer or Toyo ta authorized
repairer, or any reliable repairer.
■If “Hybrid System Overheated
Output Power Reduced” is
shown on the multi-informa -
tion 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 (radiator) for
any leaks.
Radiator
Cooling fan
If a large amount o f coolant leaks,
immediately contact any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
4 The coolant level is satisfactory
if it is between the “FULL” and
“LOW” lines on the reservoir.
Reservoir
“FULL” line
“LOW” line
5 Add coolant if necessary.
Water can be used in an emergency if
power control unit coolant is unavail- able.
If water was added in an emergency,
have the vehicle i nspected at any authorized Toyota r etailer or Toyota
authorized repairer, or any reliable
repairer as soon as possible.
6 After stopping the hybrid system
and waiting for 5 minutes or
more, start the hybrid system
again and check th e multi-infor-
A
B
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 no t 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 rotatin g parts such as
the fan, which may lead to fingers
or clothing (especia lly a tie, a scarf or a muffler) getting caught, result -
ing in serious injury.
●Do not loosen the c oolant reservoir
cap while t he 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.