2021 TOYOTA PRIUS PRIME radiator

43Maintenance Log
MAINTENANCE LOG
MAINTENANCE
30,000 miles or 36 months
Check installation of driver’s floor mat
Inspect and adjust all fluid levels1
Inspect HV battery cooling intake lter6
Inspect wiper blades
Replace cabin air filter
Replace engine air filter
Replace engine oil and oil filter2
Rotate tires
Inspect the following:
_
Automatic transmission for signs of leakage
_ Ball joints and dust covers
_ Brake lines and hoses
_ Brake linings/drums and
brake pads/discs
4
_ Drive shaft boots
_ Engine/Inverter coolant
5
_Additional Maintenance Items for Special Operating Conditions3
Driving on dirt roads or dusty roads:Tighten nuts and bolts on chassis and body
Driving while towing, using a car-top carrier, or heavy vehicle loading:7
Tighten nuts and bolts on chassis and body




_ Exhaust pipes and mountings
_ Fuel lines and connections, fuel tank band
and fuel tank vapor vent system hoses
_ Fuel tank cap gasket
_ Radiator, condenser and/or intercooler
_ Steering gear
_ Steering linkage and boots
1 Inspect sealed transmissions, transfer cases and differentials for signs of leakage. If any leakage from a sealed
component is suspected, it is recommended that you have the sealed component inspected by a Toyo t a dealer. Inspect
power steering fluid (if equipped) and brake fluid level/condition. Inspect engine and inverter (if equipped) coolant
level/condition/freezing point. Your dealer may recommend services (Dealer-Recommended Maintenance) based on
inspection results.
2

Reset the oil replacement reminder light (“MAINT REQD”) or the message “OIL MAINTENANCE REQUIRED” on the
multi-information display after maintenance at every 5,000 miles.
3
Perform these service items only if you drive primarily under the conditions indicated. 4 Inspect thickness measurement and disc runout.5

Refer to “Engine/Inverter Coolant” in the “Explanation of Maintenance Items” section in the back of this guide for
more information.
6 Visually check the HV battery cooling intake lter for dirt or dust every 5,000 miles and clean if necessary. Clean every
20,000 miles.
7
Not all vehicles are designed for towing. Refer to your Vehicle Owner’s Manual for details.
DEALER SERVICE VERIFICATION:
D
ATE:
MILEAGE:
19-TCS-14205 MY21 PRIUS PRIME WMG _GUTS 2_tg.indd 436/10/20 8:42 PM

45Maintenance Log
MAINTENANCE LOG
MAINTENANCE
45,000 miles or 54 months
Check installation of driver’s floor mat
Inspect and adjust all fluid levels1
Inspect HV battery cooling intake lter5
Inspect wiper blades
NOTE: If 0W-16 oil WAS NOT used at the last oil change, replace engine oil and oil filter.2
Inspect the following:
_Ball joints and dust covers _
Exhaust pipes and mountings
_ Brake lines and hoses _
Radiator, condenser and/or intercooler
_ Cabin air filter _
Steering gear
_ Drive shaft boots _
Steering linkage and boots
_ Engine/Inverter coolant
4






Additional Maintenance Items for Special Operating Conditions3
Driving on dirt roads or dusty roads:Inspect engine air filter
Replace engine oil and oil filter2
Tighten nuts and bolts on chassis and body
Driving while towing, using a car-top carrier, or heavy vehicle loading:6
Replace engine oil and oil filter2
Tighten nuts and bolts on chassis and body
Repeated trips of less than five miles in temperatures below 32°F / 0°C:
Replace engine oil and oil filter2
Extensive idling and/or low speed driving for a long distance such as police, taxi or
door-to-door delivery use:
Replace engine oil and oil filter2
1
Inspect sealed transmissions, transfer cases and differentials for signs of leakage. If any leakage from a sealed
component is suspected, it is recommended that you have the sealed component inspected by a Toyota dealer. Inspect
power steering fluid (if equipped) and brake fluid level/condition. Inspect engine and inverter (if equipped) coolant
level/condition/freezing point. Your dealer may recommend services (Dealer-Recommended Maintenance) based on
inspection results.
2 Reset the oil replacement reminder light (“MAINT REQD”) or the message “OIL MAINTENANCE REQUIRED” on the
multi-information display after maintenance at every 5,000 miles.
3 Perform these service items only if you drive primarily under the conditions indicated.

4 Refer to “Engine/Inverter Coolant” in the “Explanation of Maintenance Items” section in the back of this guide for
more information.
5 Visually check the HV battery cooling intake lter for dirt or dust every 5,000 miles and clean if necessary. Clean every
20,000 miles.
6 Not all vehicles are designed for towing. Refer to your Vehicle Owner’s Manual for details.
DEALER SERVICE VERIFICATION:
D
ATE:
MILEAGE:
NOTE: Driving in heavy traffic, on dirt roads or in urban, dusty or desert areas may
shorten the life of the cabin air filter. Replacement may be needed if you notice
reduced airflow from the air conditioner and heater or if the windows fog easily
when you use the Fresh mode. Consult your dealer if any of these conditions occur.
Rotate tires
Visually inspect brake linings/
drums and brake pads/discs
19-TCS-14205 MY21 PRIUS PRIME WMG _GUTS 2_tg.indd 456/10/20 8:43 PM

47Maintenance Log
MAINTENANCE LOG
MAINTENANCE
60,000 miles or 72 months
Check installation of driver’s floor mat
Clean HV battery cooling intake lter6
Inspect and adjust all fluid levels1
Inspect wiper blades
Replace cabin air filter
Replace engine air filter
Replace engine oil and oil filter2
Rotate tires
Inspect the following: _Automatic transmission for signs of leakage
_ Ball joints and dust covers
_ Brake lines and hoses
_ Brake linings/drums and
brake pads/discs
4
_Drive shaft boots
_ Engine/Inverter coolant
5

Additional Maintenance Items for Special Operating Conditions3
Driving on dirt roads or dusty roads:Tighten nuts and bolts on chassis and body
Driving while towing, using a car-top carrier, or heavy vehicle loading:7
Replace automatic transmission fluid
Tighten nuts and bolts on chassis and body

1
Inspect sealed transmissions, transfer cases and differentials for signs of leakage. If any leakage from a sealed
component is suspected, it is recommended that you have the sealed component inspected by a Toyota dealer. Inspect
power steering fluid (if equipped) and brake fluid level/condition. Inspect engine and inverter (if equipped) coolant
level/condition/freezing point. Your dealer may recommend services (Dealer-Recommended Maintenance) based on
inspection results.
2 Reset the oil replacement reminder light (“MAINT REQD”) or the message “OIL MAINTENANCE REQUIRED” on the
multi-information display after maintenance at every 5,000 miles.
3 Perform these service items only if you drive primarily under the conditions indicated. 4 Inspect thickness measurement and disc runout.5 Refer to “Engine/Inverter Coolant” in the “Explanation of Maintenance Items” section in the back of this guide for
more information.
6 Visually check the HV battery cooling intake lter for dirt or dust every 5,000 miles and clean if necessary. Clean every
20,000 miles.
7 Not all vehicles are designed for towing. Refer to your Vehicle Owner’s Manual for details.
_
Exhaust pipes and mountings
_
Fu el lines and connections, fuel tank band
and fuel tank vapor vent system hoses
_ Fuel tank cap gasket
_ Radiator, condenser and/or intercooler
_ Steering gear
_ Steering linkage and boots
DEALER SERVICE VERIFICATION:
D
ATE:
MILEAGE:
19-TCS-14205 MY21 PRIUS PRIME WMG _GUTS 2_tg.indd 476/10/20 8:43 PM

49Maintenance Log
75,000 miles or 90 months
Check installation of driver’s floor mat
Inspect and adjust all fluid levels1
Inspect HV battery cooling intake lter5
Inspect wiper blades
NOTE: If 0W-16 oil WAS NOT used at the last oil change, replace engine oil and oil filter.2
Inspect the following:
_Ball joints and dust covers _

Exhaust pipes and mountings
_ Brake lines and hoses _
Radiator, condenser and/or intercooler
_ Cabin air filter _
Steering gear
_ Drive shaft boots _
Steering linkage and boots
_ Engine/Inverter coolant
4





Additional Maintenance Items for Special Operating Conditions3
Driving on dirt roads or dusty roads:Inspect engine air filter
Replace engine oil and oil filter2
Tighten nuts and bolts on chassis and body
Driving while towing, using a car-top carrier, or heavy vehicle loading:6
Replace engine oil and oil filter2
Tighten nuts and bolts on chassis and body
Repeated trips of less than five miles in temperatures below 32°F / 0°C:
Replace engine oil and oil filter2
Extensive idling and/or low speed driving for a long distance such as police, taxi or
door-to-door delivery use:
Replace engine oil and oil filter2
NOTE: Driving in heavy traffic, on dirt roads or in urban, dusty or desert areas may
shorten the life of the cabin air filter. Replacement may be needed if you notice
reduced airflow from the air conditioner and heater or if the windows fog easily
when you use the Fresh mode. Consult your dealer if any of these conditions occur.
MAINTENANCE LOG
MAINTENANCE
1 Inspect sealed transmissions, transfer cases and differentials for signs of leakage. If any leakage from a sealed
component is suspected, it is recommended that you have the sealed component inspected by a Toyota dealer. Inspect
power steering fluid (if equipped) and brake fluid level/condition. Inspect engine and inverter (if equipped) coolant
level/condition/freezing point. Your dealer may recommend services (Dealer-Recommended Maintenance) based on
inspection results.
2 Reset the oil replacement reminder light (“MAINT REQD”) or the message “OIL MAINTENANCE REQUIRED” on the
multi-information display after maintenance at every 5,000 miles.
3 Perform these service items only if you drive primarily under the conditions indicated.4
Refer to “Engine/Inverter Coolant” in the “Explanation of Maintenance Items” section in the back of this guide for
more information.
5 Visually check the HV battery cooling intake lter for dirt or dust every 5,000 miles and clean if necessary. Clean every
20,000 miles.
6 Not all vehicles are designed for towing. Refer to your Vehicle Owner’s Manual for details.
DEALER SERVICE VERIFICATION:
D
ATE:
MILEAGE:
Rotate tires
Visually inspect brake linings/
drums and brake pads/discs
19-TCS-14205 MY21 PRIUS PRIME WMG _GUTS 2_tg.indd 496/10/20 8:43 PM

51Maintenance Log
MAINTENANCE LOG
MAINTENANCE
90,000 miles or 108 months
Check installation of driver’s floor mat
Inspect and adjust all fluid levels1
Inspect HV battery cooling intake lter6
Inspect wiper blades
Replace cabin air filter
Replace engine air filter
Replace engine oil and oil filter2
Rotate tires
Inspect the following: _ Automatic transmission for signs of leakage
_ Ball joints and dust covers
_ Brake lines and hoses
_ Brake linings/drums and brake pads/discs
4
_Drive shaft boots
_ Engine/Inverter coolant
5
_Exhaust pipes and mountings


Additional Maintenance Items for Special Operating Conditions3
Driving on dirt roads or dusty roads:Tighten nuts and bolts on chassis and body
Driving while towing, using a car-top carrier, or heavy vehicle loading:7
Tighten nuts and bolts on chassis and body

_ Fuel lines and connections, fuel tank band
and fuel tank vapor vent system hoses
_ Fuel tank cap gasket
_ Radiator, condenser and/or intercooler
_ Steering gear
_ Steering linkage and boots
1 Inspect sealed transmissions, transfer cases and differentials for signs of leakage. If any leakage from a sealed
component is suspected, it is recommended that you have the sealed component inspected by a Toyota dealer. Inspect
power steering fluid (if equipped) and brake fluid level/condition. Inspect engine and inverter (if equipped) coolant
level/condition/freezing point. Your dealer may recommend services (Dealer-Recommended Maintenance) based on
inspection results.
2 Reset the oil replacement reminder light (“MAINT REQD”) or the message “OIL MAINTENANCE REQUIRED” on the
multi-information display after maintenance at every 5,000 miles.
3 Perform these service items only if you drive primarily under the conditions indicated. 4 Inspect thickness measurement and disc runout.5

Refer to “Engine/Inverter Coolant” in the “Explanation of Maintenance Items” section in the back of this guide for
more information.
6 Visually check the HV battery cooling intake lter for dirt or dust every 5,000 miles and clean if necessary. Clean every
20,000 miles.
7 Not all vehicles are designed for towing. Refer to your Vehicle Owner’s Manual for details.
DEALER SERVICE VERIFICATION:
D
ATE:
MILEAGE:
19-TCS-14205 MY21 PRIUS PRIME WMG _GUTS 2_tg.indd 516/10/20 8:43 PM

53Maintenance Log
1 Inspect sealed transmissions, transfer cases and differentials for signs of leakage. If any leakage from a sealed
component is suspected, it is recommended that you have the sealed component inspected by a Toyota dealer. Inspect
power steering fluid (if equipped) and brake fluid level/condition. Inspect engine and inverter (if equipped) coolant
level/condition/freezing point. Your dealer may recommend services (Dealer-Recommended Maintenance) based on
inspection results.
2 Reset the oil replacement reminder light (“MAINT REQD”) or the message “OIL MAINTENANCE REQUIRED” on the
multi-information display after maintenance at every 5,000 miles.
3 Perform these service items only if you drive primarily under the conditions indicated.4
Initial engine coolant replacement at 100,000 miles/120 months. Replace every 50,000 miles/60 months thereafter
Initial inverter coolant replacement at 150,000 miles/180 months. Replace every 50,000 miles/60 months thereafter.
5
Refer to “Engine/Inverter Coolant” in the “Explanation of Maintenance Items” section in the back of this guide for
more information.
6 Visually check the HV battery cooling intake lter for dirt or dust every 5,000 miles and clean if necessary. Clean every
20,000 miles.
7 Not all vehicles are designed for towing. Refer to your Vehicle Owner’s Manual for details.
105,000 miles or 126 months
Check installation of driver’s floor mat
Inspect and adjust all fluid levels1
Inspect HV battery cooling intake lter6
Inspect wiper blades
NOTE: If 0W-16 oil WAS NOT used at the last oil change, replace engine oil and oil filter.2
Inspect the following:
_Ball joints and dust covers _
Exhaust pipes and mountings
_ Brake lines and hoses _
Radiator, condenser and/or intercooler
_ Cabin air filter _
Steering gear
_ Drive shaft boots _
Steering linkage and boots
_ Engine/Inverter coolant
5






Additional Maintenance Items for Special Operating Conditions3
Driving on dirt roads or dusty roads:Inspect engine air filter
Replace engine oil and oil filter2
Tighten nuts and bolts on chassis and body
Driving while towing, using a car-top carrier, or heavy vehicle loading:7
Replace engine oil and oil filter2
Tighten nuts and bolts on chassis and body
Repeated trips of less than five miles in temperatures below 32°F / 0°C:
Replace engine oil and oil filter2
Extensive idling and/or low speed driving for a long distance such as police, taxi or
door-to-door delivery use:
Replace engine oil and oil filter2

DEALER SERVICE VERIFICATION:
D
ATE:
MILEAGE:
NOTE: Driving in heavy traffic, on dirt roads or in urban, dusty or desert areas may
shorten the life of the cabin air filter. Replacement may be needed if you notice
reduced airflow from the air conditioner and heater or if the windows fog easily
when you use the Fresh mode. Consult your dealer if any of these conditions occur.
Rotate tires
Visually inspect brake linings/
drums and brake pads/discs
MAINTENANCE LOG
MAINTENANCE
19-TCS-14205 MY21 PRIUS PRIME WMG _GUTS 2_tg.indd 536/10/20 8:43 PM

55Maintenance Log
MAINTENANCE LOG
MAINTENANCE
120,000 miles or 144 months
Check installation of driver’s floor mat
Clean HV battery cooling intake lter7
Inspect and adjust all fluid levels1
Inspect wiper blades
Replace cabin air filter
Replace engine air filter
Replace engine oil and oil filter2
Replace spark plugs4
Rotate tires
Inspect the following: _ Automatic transmission for signs of leakage
_ Ball joints and dust covers
_ Brake lines and hoses
_ Brake linings/drums and brake pads/discs
5
_Drive shaft boots
_ Engine/Inverter coolant
6
_Exhaust pipes and mountings

Additional Maintenance Items for Special Operating Conditions3
Driving on dirt roads or dusty roads:Tighten nuts and bolts on chassis and body
Driving while towing, using a car-top carrier, or heavy vehicle loading:8
Replace automatic transmission fluid
Tighten nuts and bolts on chassis and body

1
Inspect sealed transmissions, transfer cases and differentials for signs of leakage. If any leakage from a sealed
component is suspected, it is recommended that you have the sealed component inspected by a Toyota dealer. Inspect
power steering fluid (if equipped) and brake fluid level/condition. Inspect engine and inverter (if equipped) coolant
level/condition/freezing point. Your dealer may recommend services (Dealer-Recommended Maintenance) based on
inspection results.
2 Reset the oil replacement reminder light (“MAINT REQD”) or the message “OIL MAINTENANCE REQUIRED” on the
multi-information display after maintenance at every 5,000 miles.
3 Perform these service items only if you drive primarily under the conditions indicated. 4 Maintenance services of spark plugs are required under the terms of the Emissions Control Warranty. For vehicles
corresponding to PZEV the replacement interval is 150,000 miles.
5 Inspect thickness measurement and disc runout.6 Refer to “Engine/Inverter Coolant” in the “Explanation of Maintenance Items” section in the back of this guide for
more information.
7 Visually check the HV battery cooling intake lter for dirt or dust every 5,000 miles and clean if necessary. Clean every
20,000 miles.
8 Not all vehicles are designed for towing. Refer to your Vehicle Owner’s Manual for details.
_
Fuel lines and connections, fuel tank band
and fuel tank vapor vent system hoses
_ Fuel tank cap gasket
_ Radiator, condenser and/or intercooler
_ Steering gear
_ Steering linkage and boots
DEALER SERVICE VERIFICATION:
D
ATE:
MILEAGE:
19-TCS-14205 MY21 PRIUS PRIME WMG _GUTS 2_tg.indd 556/10/20 8:43 PM

57Maintenance Log
MAINTENANCE
Driver’s Floor Mat
• Only use the driver’s floor mat
designed specifically for the model
and model year of your vehicle.
• Always properly secure the driver’s
floor mat using the retaining hooks.
• Never install another floor mat on top
of the existing driver’s floor mat.
• Never install the driver’s floor mat
upside down.
Engine Air Filter
Inspect or replace at specied intervals.
When performing inspections, check for
damage, excessive wear and oiliness, and
replace if necessary.
Engine/Inverter Coolant
Drain the cooling system and rell with an
ethylene-glycol type coolant. Inspect hoses
and connections for corrosion and leaks.
Tighten connections and replace parts
when necessary. A qualied technician
should perform these operations. (For
further details, refer to “Radiator, Condenser
and Hoses” in the “Maintenance and Care”
section of the Owner’s Manual ).
Your Toyota is equipped with Genuine
Toyota Super Long-Life Coolant. The
replacement intervals for engine coolant
recommended in this booklet are based
on replacement with Genuine Toyota
Super Long-Life Coolant or similar
high-quality non-silicate, non-amine,
non-borate ethylene-glycol coolant with
long-life hybrid organic acid technology
(i.e., a combination of low phosphates
and organic acids). If another type of
ethylene-glycol coolant is used,
replacement intervals may be different.
EXPLANATION OF MAINTENANCE ITEMS
19-TCS-14205 MY21 PRIUS PRIME WMG _GUTS 2_tg.indd 576/10/20 8:43 PM