check engine TOYOTA RAV4 PLUG-IN HYBRID 2023 Owner's Manual

4807-3. Do-it-yourself maintenance
oil level on the dipstick.
■Checking the engine oil
1Park the vehicle on level
ground. After warming up the
engine and turning off the hybrid
system, wait more than 5 min-
utes for the oil to drain back into
the bottom of the engine.
2Holding a rag under the end,
pull the dipstick out.
3Wipe the dipstick clean.
4Reinsert the dipstick fully.
5Holding a rag under the end,
pull the dipstick out and check
the oil level.
Low
Normal
Excessive
The shape of the dipstick may differ depending on the type of vehicle or
engine.
6Wipe the dipstick and reinsert it
fully.
■Checking the oil type and pre-
paring the items needed
Make sure to check the oil type and
prepare the items needed before
adding oil.
Engine oil selection
P.587
Oil quantity (Low  Full)
1.5 L (1.6 qt., 1.3 Imp. qt.)
Item
Clean funnel
■Adding engine oil
If the oil level is below or near the
low level mark, add engine oil of the
same type as that already in the
engine.
1Remove the oil filler cap by turn-
ing it counterclockwise.
2Add engine oil slowly, checking
the dipstick.
3Install the oil filler cap by turning
it clockwise.
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B
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7
7-3. Do-it-yourself maintenance
Maintenance and care
■Engine oil consumption
A certain amount of engine oil will be
consumed while driving. In the following situations, oil consumption may increase, and engine oil may need to be
refilled in between oil maintenance inter- vals.
●When the engine is new, for example directly after purchasing the vehicle or after replacing the engine
●If low quality oil or oil of an inappropri-ate viscosity is used
●When driving at high engine speeds or with a heavy load, when towing, or
when driving while accelerating or decelerating frequently
●When leaving the engine idling for a long time, or when driving frequently through heavy traffic
The coolant level is satisfactory if it
is between the “FULL” and “LOW”
lines on the reservoir when the
hybrid system is cold.
■Engine coolant reservoir
Reservoir cap
“FULL” line
WARNING
■Used engine oil
●Used engine oil contains poten-
tially harmful contaminants which may cause skin disorders such as inflammation and skin cancer, so
care should be taken to avoid pro- longed and repeated contact. To remove used engine oil from your
skin, wash thoroughly with soap and water.
●Dispose of used oil and filters only in a safe and acceptable manner. Do not dispose of used oil and fil-
ters in household trash, in sewers or onto the ground. Call any autho-rized Toyota retailer or Toyota
authorized repairer, or any reliable repairer, service station or auto parts store for information concern-
ing recycling or disposal.
●Do not leave used engine oil within
the reach of children.
NOTICE
■To prevent serious engine dam- age
Check the oil level on a regular basis.
■When replacing the engine oil
●Be careful not to spill engine oil on the vehicle components.
●Avoid overfilling, or the engine could be damaged.
●Check the oil level on the dipstick every time you refill the vehicle.
●Be sure the engine oil filler cap is properly tightened.
■If oil is spilled on the engine cover
To prevent the engine cover from
being damaged, remove any engine oil from the engine cover as soon as possible using a neutral detergent. Do
not use an organic solvent such as brake cleaner.
Checking the coolant
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B

4827-3. Do-it-yourself maintenance
“LOW” line
If the level is on or below the “LOW”
line, add coolant up to the “FULL” line.
( P.578)
■Power control unit coolant
reservoir
Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the “LOW”
line, add coolant up to the “FULL” line.
( P.580)
■Coolant selection
Only use “Toyota Super Long Life Coo- lant” or a similar high quality ethylene glycol based non-silicate, non-amine,
non-nitrite, and non-borate coolant with long-life hybrid organic acid technology.“Toyota Super Long Life Coolant” is a
mixture of 50% coolant and 50% deion- ized water. (Minimum temperature: -35°C [-31°F])
For more details about coolant, contact any authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer.
■If the coolant level drops within a short time of replenishing
Visually check the radiators, hoses,
engine/power control unit coolant reser- voir caps, drain cock and water pump.If you cannot find a leak, have any
authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer, test the cap and check for leaks in the cooling system.
Check the radiator and condenser,
and clear away any foreign objects.
If either of the above parts is
extremely dirty or you are not sure
of their condition, have your vehicle
inspected by any authorized Toyota
retailer or Toyota authorized
repairer, or any reliable repairer.
C
A
B
C
WARNING
■When the hybrid system is hot
Do not remove the engine/power con- trol unit coolant reservoir caps.
The cooling system may be under pressure and may spray hot coolant if the cap is removed, causing serious
injuries, such as burns.
NOTICE
■When adding coolant
Coolant is neither plain water nor straight antifreeze. The correct mix-ture of water and antifreeze must be
used to provide proper lubrication, corrosion protection and cooling. Be sure to read the antifreeze or coolant
label.
■If you spill coolant
Be sure to wash it off with water to prevent it from damaging parts or
paint.
Checking the radiator and
condenser

483
7
7-3. Do-it-yourself maintenance
Maintenance and care
Without level gauge
Type A: If any washer does not
work, the washer tank may be
empty. Add washer fluid.
Type B: If any washer does not
work or the warning message
appears on the multi-information
display, the washer tank may be
empty. Add washer fluid.
With level gauge
If the washer fluid level is at “LOW”,
add washer fluid.
■Using the gauge (if equipped)
The washer fluid level can be checked
by observing the position of the level on the liquid-covered holes in the gauge.
If the level falls below the second hole
from the bottom (the “LOW” position), refill the washer fluid.
Current fluid level
WARNING
■When the hybrid system is hot
Do not touch the radiator or con-
denser as they may be hot and cause serious injuries, such as burns.
■When the electric cooling fan is operating
Do not touch the engine compart-
ment.
With the power switch in ON, the electric cooling fan may automatically
start to run if the air conditioning is on and/or the coolant temperature is high. Be sure the power switch is off
when working near the electric cool- ing fan or radiator grille.
Checking and adding the
washer fluid
WARNING
■When adding washer fluid
Do not add washer fluid when the hybrid system is hot or operating as
washer fluid contains alcohol and may catch fire if spilled on the hybrid system, etc.
A

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7
7-3. Do-it-yourself maintenance
Maintenance and care
1 Turn the power switch off.
Confirm that the charging connector is not connected. Also, do not use the
Remote Air Conditioning System during the procedure.
2 Open the fuse box cover.
Engine compartment: Type A
fuse box
Push claws and to completely
release the lock, and then lift up the
cover.
Engine compartment: Type B
fuse box
Push claws and to completely
release the lock, and then lift up the
cover.
WARNING
■To prevent battery explosion or leakage of flammable liquid or
gas
●Replace the battery with a new bat- tery of the same type. If a wrong
type of battery is used, it may explode.
●Do not expose batteries to extremely low pressure due to high altitude or extremely high tempera-
tures.
●Do not burn, break or cut a battery.
■Certification for the electronic key battery
CAUTION
RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT
TYPE. DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUC-
TIONS
NOTICE
■When replacing the battery
Use a flathead screwdriver of appro- priate size. Applying excessive force may deform or damage the cover.
■For normal operation after replacing the battery
Observe the following precautions to prevent accidents:
●Always work with dry hands.
Moisture may cause the battery to rust.
●Do not touch or move any other component inside the remote con-trol.
●Do not bend either of the battery terminals.
Checking and replacing
fuses
If any of the electrical compo-
nents do not operate, a fuse
may have blown. If this hap-
pens, check and replace the
fuses as necessary.
Checking and replacing
fuses
AB
AB

5167-3. Do-it-yourself maintenance
Check the wattage of the light bulb
to be replaced. ( P.591)
Outside rear view mirrors
Outer foot lights (if equipped)
WARNING
■To prevent system breakdowns and vehicle fire
Observe the following precautions. Failure to do so may cause damage to the vehicle, and possibly a fire or
injury.
●Never use a fuse of a higher amperage rating than that indi-
cated, or use any other object in place of a fuse.
●Always use a genuine Toyota fuse or equivalent.Never replace a fuse with a wire,
even as a temporary fix.
●Do not modify the fuses or fuse
boxes.
NOTICE
■Before replacing fuses
Have the cause of electrical overload determined and repaired by any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer as soon as possible.
■To prevent damage to the engine compartment fuse box cover
When opening the fuse box, com- pletely release the claw locks before lifting up the cover. Otherwise, the
claws may be damaged.
Light bulbs
You may replace the following
bulbs by yourself. The diffi-
culty level of replacement var-
ies depending on the bulb. As
there is a danger that compo-
nents may be damaged, we
recommend that replacement
is carried out by any autho-
rized Toyota retailer or Toyota
authorized repairer, or any reli-
able repairer.
Preparing for light bulb
replacement
Bulb location
A

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

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.

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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