2021 TOYOTA HIGHLANDER radiator

45Maintenance Log
MAINTENANCE LOG
MAINTENANCE
60,000 miles or 72 months
■ Add Toyota EFI Tank Additive or equivalent
(Hawaii, Puerto Rico and Saipan only)
■Check installation of driver’s floor mat
■Inspect and adjust all fluid levels1
■Inspect wiper blades
■Replace cabin air filter
■Replace engine air filter
Inspect the following:
_ A

utomatic transmission fl
u
id cooler
h

oses and connections
_ A

utomatic transmission for signs of leakage
_ B

all joints and dust covers
_ B

rake lines and hoses
_ B

rake linings/drums and
brake pads/discs
6
_ Dr ive belts7
_Dr ive shaft boots
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:9
■Replace automatic transmission fluid
■Tighten nuts and bolts on chassis and body
Extensive idling and/or low speed driving for a long distance such as police, taxi or
door-to-door delivery use:
■Replace automatic transmission fluid

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 R eset 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 P erform these service items only if you drive primarily under the conditions indicated. 4 Includes operating on roads which road salt has been applied.5 Maintenance services of spark plugs are required under the terms of the Emissions Control Warranty. 6 Inspect thickness measurement and disc runout.7 Initial inspection at 60,000 miles/ 72 months. Inspect every 15,000 miles/18 months thereafter. 8 R efer to “Engine Coolant” in the “Explanation of Maintenance Items” section in the back of this guide for more information.9 N ot all vehicles are designed for towing. Refer to your Vehicle Owner’s Manual for details.
_
Engine coolant8
_ Engine oil cooler hoses and connections
_ E

xhaust pipes and mountings
_ F

uel lines and connections, fuel tank band
and fuel tank vapor vent system hoses
_ F

uel tank cap gasket
_ R

adiator and condenser
_S

teering gear
_S

teering linkage and boots
Dealer Service verification:
D
ate:
Mileage: ■
Replace engine oil and oil filter2
■Replace rear differential oil (4WD)
■Replace spark plugs5
■Replace transfer case oil (4WD)
■Re-torque propeller shaft bolt (4WD)
■Rotate tires _Engine oil cooler hoses and connections
_Exhaust pipes and mountings
_ Fuel lines and connections, fuel tank band
and fuel tank vapor vent system hoses
_Fuel tank cap gasket
_Radiator and condenser
_Steering gear
_Steering linkage and boots
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55Maintenance Log
MAINTENANCE
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 qualified
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 specified intervals.
When performing inspections, check for
damage, excessive wear and oiliness, and
replace if necessary.
Engine Coolant
Drain the cooling system and refill with an
ethylene-glycol type coolant. Inspect hoses
and connections for corrosion and leaks.
Tighten connections and replace parts
when necessary. A qualified 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
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57Maintenance Log
MAINTENANCE
EXPLANATION OF MAINTENANCE ITEMS
Radiator and Condenser
Inspect for debris, corrosion and signs
of damage. Have any problem repaired
immediately by a qualified technician.
Rear Differential Oil
Inspect or replace at specified intervals.
When performing inspections, check each
component for signs of leakage. If you
discover any leakage, have it repaired by
a qualified technician immediately.
Spark Plugs
Replace at specified intervals. Install new
plugs of the same type as originally
equipped. A qualified technician should
perform this operation.
Steering Gear
Inspect for signs of leakage. If you
discover any leakage, have it repaired
immediately by a qualified technician.
Steering Linkage and Boots
With the vehicle stopped, check for
excessive freeplay in the steering wheel.
Inspect the linkage for bending and
damage and the dust boots for
deterioration, cracks and damage. Replace
any damaged parts. A qualified technician
should perform these operations.
Tire Rotation
Tires should be rotated according to the
instructions in the Owner’s Manual. When
rotating tires, check for damage and
uneven wear. Replace if necessary.
Transfer Case Oil
Inspect or replace at specified intervals. When
performing inspections, check for signs of
leakage. If you discover any leakage, have it
repaired by a qualified technician immediately.
Vacuum Pump for Brake Booster
Replace at specified intervals. A qualified
technician should perform this operation
Wiper Blades
The wiper blades should not show any
signs of cracking, splitting, wear,
contamination or deformation. The wiper
blades should clear the windshield without
streaking or skipping.
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