2019 TOYOTA PRIUS PLUS air conditioning

3866-3. Do-it-yourself maintenance
PRIUS +_OM_OM47D30E_(EE)
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.
WARNING
■ When the hybrid system is hot
Do not remove the engine/power control 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 mixture 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.
Radiator and condenser
WARNING
■ When the hybrid system is hot
Do not touch the radiator or condenser as they may be hot and cause seri-
ous injuries, such as burns.
■ When the electric cooling fans are operating
Do not touch the engine compartment.
With the power switch in ON mode, the electric cooling fans may automati-
cally 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 fans or radiator grille.

4136-3. Do-it-yourself maintenance
PRIUS +_OM_OM47D30E_(EE)
6
Maintenance and care
Air conditioning filter
Turn the power switch off.
Open the lower glove box and
remove the filter exchange
cover.
Remove the filter cover.
The air conditioning filter must be changed regularly to maintain
air conditioning efficiency.
Removal method
1
2
3
Left-hand drive vehiclesRight-hand drive vehicles

4146-3. Do-it-yourself maintenance
PRIUS +_OM_OM47D30E_(EE)
Slide and pull out the filter.
Replace it with a new one.
The “ UP” marks shown on the fil-
ter should be pointing up.
When installing, reverse the steps listed.
■ Checking interval
Inspect and replace the air conditioning filter according to the maintenance
schedule. In dusty areas or areas with heavy traffic flow, early replacement
may be required. (For scheduled maintenance information, please refer to the
“Toyota Service Booklet” or “Toyota Warranty Booklet”.)
■ If air flow from the vents decreases dramatically
The filter may be clogged. Check the filter and replace if necessary.
4
NOTICE
■ To prevent damage to the system
When using the air conditioning system, make sure that a filter is always
installed.
5

4437-2. Steps to take in an emergency
PRIUS +_OM_OM47D30E_(EE)
7
When trouble arises
If you think something is wrong
●Fluid leaks under the vehicle
(Water dripping from the air conditioning after use is normal.)
● Flat-looking tires or uneven tire wear
● High coolant temperature warning light flashes or comes on
● Changes in exhaust sound
● Excessive tire squeal when cornering
● Strange noises related to the suspension system
● Pinging or other noises related to the hybrid system
● Engine missing, stumbling or running roughly
● Appreciable loss of power
● Vehicle pulls heavily to one side when braking
● Vehicle pulls heavily to one side when driving on a level road
● Loss of brake effectiveness, spongy feeling, pedal almost touches
the floor
If you notice any of the following symptoms, your vehicle proba-
bly needs adjustment or repair. Contact any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer as
soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms

5187-2. Steps to take in an emergency
PRIUS +_OM_OM47D30E_(EE)
If your vehicle overheats
■If the high coolant temperature warning light comes on or
flashes
Stop the vehicle in a safe place and turn off the air conditioning
system, and then stop the hybrid system.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the hybrid system has cooled down sufficiently, inspect the
hoses and radiator core (radiator) for any leaks.
Radiator
Cooling fans
If a large amount of coolant
leaks, immediately contact
any authorized Toyota retailer
or Toyota authorized repairer,
or any reliable repairer.
The following may indicate that your vehicle is overheating.
● The high coolant temperature warning light (P. 449) comes on
or flashes, or a loss of hybrid system power is experienced. (For
example, the vehicle speed does not increase.)
● Vehicles without multi-information display: The hybrid system
overheat warning light ( P. 449) comes on.
● Vehicles with multi-information display: The warning message
indicating overheat is shown on the multi-information display.
( P. 464)
● Steam comes out from under the hood.
Correction procedures
1
2
3
1
2

5197-2. Steps to take in an emergency
PRIUS +_OM_OM47D30E_(EE)
7
When trouble arises
The coolant level is satisfactory if it is between the “FULL” and
“LOW” lines on the reservoir.
Reservoir
“FULL” line
“LOW” line
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
Start the hybrid system and turn the air conditioning system on to
check that the radiator cooling fans operate and to check for
coolant leaks from the radiator or hoses.
The fans operate when the air condi tioning system is turned on immedi-
ately after a cold start. Confirm that the fans are operating by checking
the fan sound and air flow. If it is difficult to check these, turn the air con-
ditioning system on and off repeatedly. (The fans may not operate in
freezing temperatures.)
If the fans are not operating:
Stop the hybrid system immediately and contact any authorized
Toyota retailer or Toyota authorized repairer, or any reliable
repairer.
If the fans are operating:
Have the vehicle inspected at the nearest any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer.
4
1
2
3
5
6
7

5438-2. Customization
PRIUS +_OM_OM47D30E_(EE)
8
Vehicle specifications
■PCS (Pre-Crash Safety system)* (P. 271)
*: If equipped
■
RSA (Road Sign Assist)* (P. 294)
*: If equipped
■
Automatic air conditioning system (P. 332)
FunctionDefault
settingCustomized
setting
PCS (Pre-Crash Safety
system)OnOffO——
Alert timingMiddleFarO——Near
123
FunctionDefault
settingCustomized
setting
RSA (Road Sign Assist)OnOffO–O
Notification
method
Excess
speedOnly visual
No notification
O–OVisual and audi-
ble
OthersOnly visual
No notification
O–OVisual and audi-
ble
Excess speed notification
level2 km/h
(1 mph)
5 km/h
(3 mph)
O–O10 km/h
(5 mph)
123
FunctionDefault
settingCustomized
setting
A/C auto switching opera-
tionOnOff––O
Heating/cooling operation
minimized in Eco drive
mode
OnOff––O
123

552Alphabetical index
PRIUS +_OM_OM47D30E_(EE)
Alphabetical index
A/C............................................. 332
Air conditioning filter.............. 413
Automatic air conditioning
system ................................ 332
Climate remote control
switches.............................. 340
Pollen removal mode ............ 335
ABS
(Anti-lock Brake System) ...... 318
Function ................................ 318
Warning light ......................... 445
Air conditioning filter .............. 413
Air conditioning system .......... 332
Air conditioning filter.............. 413
Automatic air conditioning
system ................................ 332
Climate remote control
switches.............................. 340
Pollen removal mode ............ 335
Air intake vent ............................ 86
Airbag manual on-off
system ...................................... 56Airbags ....................................... 46
Airbag manual on-off
system .................................. 56
Airbag operating conditions .... 52
Airbag precautions for your
child ...................................... 48
Airbag warning light .............. 445
Correct driving posture ........... 36
Curtain shield airbag
operating conditions ............. 52
Curtain shield airbag
precautions........................... 50
General airbag precautions .... 48
Locations of airbags................ 46
Modification and disposal of
airbags.................................. 51
Side airbag operating
conditions ............................. 52
Side airbag precautions .......... 49
Side and curtain shield
airbags operating
conditions ............................. 52
Side and curtain shield
airbags precautions .............. 50
SRS airbags............................ 46
A