2021 TOYOTA TUNDRA ECO mode

39Maintenance Log
MAINTENANCE LOG
MAINTENANCE
15,000 miles or 18 months
Check installation of driver’s floor mat
Inspect and adjust all fluid levels1
Inspect wiper blades
Re-torque propeller shaft bolt
NOTE: If 0W-20 oil WAS NOT used at the last oil change, replace engine oil and oil filter.2
Inspect the following:
_ Ball joints and dust covers
_ Brake lines and hoses
_ Cabin air filter
_ Drive shaft boots (4WD)
_ Engine coolant
5
_
Exhaust pipes and mountings
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.
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
Replace front differential oil (4WD)
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:
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 Includes operating on roads which road salt has been applied. 5 Refer to “Engine Coolant” in the “Explanation of Maintenance Items” section in the back of this guide for more information.6 Not all vehicles are designed for towing. Refer to your Vehicle Owner’s Manual for details.
Rotate tires
Visually inspect brake linings/drums
and brake pads/discs
_ Front differential oil (4WD)
_ Radiator and condenser
_ Rear differential oil
_ Steering gear
_ Steering linkage and boots
Additional Maintenance Items for Special Operating Conditions3

43Maintenance Log
MAINTENANCE LOG
MAINTENANCE
45,000 miles or 54 months
Check installation of driver’s floor mat
Inspect and adjust all fluid levels1
Inspect wiper blades
Re-torque propeller shaft bolt
NOTE: If 0W-20 oil WAS NOT used at the last oil change, replace engine oil and oil filter.2

Inspect the following:
_ Ball joints and dust covers
_ Brake lines and hoses
_ Cabin air filter
_ Drive shaft boots (4WD)
_ Engine coolant
5
_
Exhaust pipes and mountings
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.
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
Replace front differential oil (4WD)
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:
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 Includes operating on roads which road salt has been applied.5 Refer to “Engine Coolant” in the “Explanation of Maintenance Items” section in the back of this guide for more information.6 Not all vehicles are designed for towing. Refer to your Vehicle Owner’s Manual for details.
Rotate tires
Visually inspect brake linings/drums
and brake pads/discs
_ Front differential oil (4WD)
_ Radiator and condenser
_ Rear differential oil
_ Steering gear
_ Steering linkage and boots
Additional Maintenance Items for Special Operating Conditions3

47Maintenance Log
MAINTENANCE LOG
MAINTENANCE
75,000 miles or 90 months
Check installation of driver’s floor mat
Inspect and adjust all fluid levels1
Inspect wiper blades
Re-torque propeller shaft bolt
NOTE: If 0W-20 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 _
Front differential oil (4WD)
_ Cabin air filter _
Radiator and condenser
_ Drive belts _
Rear differential oil
_ Drive shaft boots (4WD)
_
Steering gear
_ Engine coolant5 _
Steering linkage and boots
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.
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
Replace front differential oil (4WD)
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:
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 Includes operating on roads which road salt has been applied. 5 Refer to “Engine Coolant” in the “Explanation of Maintenance Items” section in the back of this guide for more information.6 Not all vehicles are designed for towing. Refer to your Vehicle Owner’s Manual for details.
Rotate tires
Visually inspect brake linings/drums
and brake pads/discs

51Maintenance Log
MAINTENANCE LOG
MAINTENANCE
105,000 miles or 12 6 months
Check installation of driver’s floor mat
Inspect and adjust all fluid levels1
Inspect wiper blades
Re-torque propeller shaft bolt
NOTE: 0W-20 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 _
Front differential oil (4WD)
_ Cabin air filter _
Radiator and condenser
_ Drive belts _
Rear differential oil
_ Drive shaft boots (4WD)
_
Steering gear
_ Engine coolant6 _
Steering linkage and boots
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.
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
Replace front differential oil (4WD)
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:
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 Includes operating on roads which road salt has been applied. 5 Initial replacement at 100,000 miles/120 months. Replace every 50,000 miles/60 months thereafter. Refer to “Engine
Coolant” in the “Explanation of Maintenance Items” section in the back of this guide for more information.
6 Refer to “Engine Coolant” in the “Explanation of Maintenance Items” section in the back of this guide for more information.7 Not all vehicles are designed for towing. Refer to your Vehicle Owner’s Manual for details.
Rotate tires
Visually inspect brake linings/drums
and brake pads/discs

55Maintenance Log
MAINTENANCE
EXPLANATION OF MAINTENANCE ITEMS
Drive Shaft Boots
Check the drive shaft boots and clamps for
cracks, deterioration and damage. Replace
any deteriorated or damaged parts and, if
necessary, repack the grease. A qualied
technician should perform these operations.
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 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 Toyo t a is equipped with Genuine
Toyo t a Super Long-Life Coolant. The
replacement intervals for engine coolant
recommended in this booklet are based
on replacement with Genuine Toyo t a
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.