engine TOYOTA RAV4 PLUG-IN HYBRID 2023 Repair Manual

545
8
8-2. Steps to take in an emergency
When trouble arises
• A warning message about an opera-
tion of the brake pedal may be shown while the driving assist systems such as PCS (Pre-Collision 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 decel- erate the vehicle or follow the instruc-tion shown on the multi-information
display. • A warning message is shown when Brake Override System operates.
( P.289) • A warning message is shown when Drive-Start Control or Parking Support
Brake function (if equipped) operates ( P.289, 403). 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-information display
to operate the power 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-information 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 shown on the multi- information display is malfunctioning.
Have the vehicle inspected by any authorized Toyota retailer 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.388) • “RCTA Unavailable” ( P.388)
• “Engine Coolant Temp High” ( P.578) • “Exhaust Filter Full” ( P.414)
●If the following messages are shown, there may be a malfunction.
Immediately have the vehicle inspected
by any authorized Toyota retailer or
Toyota authorized repairer, or any reli-
able repairer.
• “Plug-in Charging System Malfunc- tion”• “Hybrid System Malfunction”
• “Charging system malfunction” • “Check Engine”• “Traction battery system malfunction”
• “Accelerator System Malfunction” • “Smart Entry & Start System Malfunc-tion”
●If the following messages are shown, there may be a malfunction.
Immediately stop the vehicle in a safe
place and contact any authorized
Toyota retailer or Toyota authorized
repairer, or any reliable repairer. Con-
tinuing to drive the vehicle may be dan-
gerous.
•“Oil Pressure Low” • “Braking Power Low”
●If any of the following messages are

5468-2. Steps to take in an emergency
shown on the multi-information dis-
play, the vehicle may have run out of fuel. Stop the vehicle in a safe place and, if the fuel level is low, refuel the
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 vent or filter of the
DC/DC converter are dirty, perform the procedures on P.504 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 malfunction 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 operating conditions. (For example, when driving up a long
steep hill or driving up a steep hill in reverse.)
Coping method: P.578
■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 (traction 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 Before Exiting Vehi- cle” 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 shift lever to P.
■If “Shift Out of N Release Accelera- tor Before Shifting” is shown
Message is displayed 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 displayed 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 off function.
Next time when starting the hybrid sys-
tem, operate the hybrid system for approximately 5 minutes to recharge the

547
8
8-2. Steps to take in an emergency
When trouble arises
12-volt battery.
■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 front camera is dis-
played (if equipped)
The following systems may be sus- pended until the problem shown in the
message is resolved. ( P.341, 534)
●PCS (Pre-Collision System)*
●LTA (Lane Tracing Assist)*
●AHB (Automatic High Beam)*
●RSA (Road Sign Assist)*
●Dynamic radar cruise control with full-
speed range*
*: If equipped
■If a message that indicates the mal- function of radar sensor is dis-
played
The following systems may be sus- pended until the problem shown in the
message is resolved. ( P.341, 534)
●PCS (Pre-Collision System)*
●LTA (Lane Tracing Assist)*
●Dynamic radar cruise control with full-
speed range*
*: If equipped
■If “Radar Cruise Control Temporar- ily Unavailable See Owner’s Man-
ual” is shown
The dynamic radar cruise 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.341)
■If “Radar Cruise Control Unavail-
able” is shown
The dynamic radar cruise control with full-speed range system (if equipped)
cannot be used temporarily. Use the system when it becomes available again.
■Warning buzzer
 P.542
WARNING
■If a warning light comes on or a warning buzzer sounds when a
warning message is shown on the multi-information display
 P.543
NOTICE
■“High Power Consumption Par- tial Limit On AC/Heater Opera-
tion” is frequently shown
There is a possible malfunction relat- ing to the charging system or the 12-
volt battery may be deteriorating. Have the vehicle inspected by any
authorized Toyota retailer or Toyota authorized repairer, or any reliable repairer.
■If “Maintenance Reqd. For Trac-tion Battery At 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 hybrid battery (trac-
tion battery) inspected will cause the hybrid system not to start.
●If the hybrid system does not start, contact any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer immediately.

567
8
8-2. Steps to take in an emergency
When trouble arises
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 operate 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 (if equipped)
• RCTA (if equipped)
• PKSB (if equipped)
• Toyota parking assist-sensor
• Rear view monitor system (if
equipped)
• Panoramic view monitor (if
equipped)
• Toyota parking assist monitor (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 (Electronic 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 injury 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 when driving with standard tires. Be careful when driv-ing over uneven road surfaces.

5748-2. Steps to take in an emergency
Push claw and to completely
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 of the positive cable to on the sec-
ond 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 terminal (second vehicle)
Solid, stationary, unpainted metallic point away from the exclusive jump
starting terminal and any moving parts as shown in the illustration
5 Start the engine of the second
vehicle. Increase the engine
speed slightly and maintain at
that level for approximately 5
AB
A
B
C
D
A
B
C
D

575
8
8-2. Steps to take in an emergency
When trouble arises
minutes to recharge the 12-volt
battery of your vehicle.
6 Vehicles with steering lock func-
tion: 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 cannot 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 require initializa-
tion. ( P.609)
■When removing the 12-volt battery terminals
When the 12-volt battery terminals are
removed, the information stored in the ECU is cleared. Before removing the 12-volt battery terminals, contact any
authorized Toyota retailer or Toyota authorized repairer, or any reliable repairer.
■Charging the 12-volt battery
The electricity stored in the 12-volt bat- tery will discharge gradually even when the vehicle is not in use, due to natural
discharge and the draining 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 to start. (The 12-volt battery recharges automatically
while the hybrid system 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 or 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 that case, start the hybrid system in the same manner as when the electronic key does not

5788-2. Steps to take in an emergency
■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 the hood after the
steam subsides.
If you do not 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.183) 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

579
8
8-2. Steps to take in an emergency
When trouble arises
3 After 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 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
engine coolant is unavailable. If water was added in an emergency,
have the vehicle inspected at any
authorized Toyota retailer 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 checking 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 this, turn the air
conditioning system on 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

5808-2. Steps to take in an emergency
8Check 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 Toyota authorized
repairer, or any reliable repairer.
If the message is not displayed:
Have the vehicle inspected at
the nearest authorized Toyota
retailer or Toyota 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 of 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 inspected at any authorized Toyota retailer 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
A
B
A
B
C

581
8
8-2. Steps to take in an emergency
When trouble arises
again and check the multi-infor-
mation display.
If the message does not disappear:
Stop the hybrid system and contact any authorized Toyota retailer or Toyota authorized 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.