2021 TOYOTA HIGHLANDER oil type

37Maintenance Log
MAINTENANCE
Special Operating Conditions
In addition to standard maintenance items,
the maintenance log indicates services that
should be performed on vehicles that are
driven under especially demanding
conditions. These “special operating
conditions” and their required maintenance
items are clearly indicated in each chart.
NOTE:
You should perform these additional
maintenance services only if the
majority of your driving is done under
the special operating conditions
indicated. If you only occasionally
drive under these circumstances, it
is not necessary to perform the
additional services.
Engine Oil Selection
Please refer to your Owner’s Manual for the
specific oil viscosity rating recommended
for your vehicle/engine type.
Additional Maintenance
In addition to scheduled maintenance,
your Toyota requires ongoing general
maintenance, such as fluid checks and
visual inspections. These procedures are
explained in the “Maintenance and Care”
section of the Owner’ s Manual. Be sure
to perform these procedures regularly to
ensure the most trouble-free operation
of your vehicle.
SuperChrome and
Alloy Wheel Care
If you purchased Genuine Toyota Accessory
SuperChrome or Aluminum Alloy Wheels,
follow these cleaning guidelines to maintain
the appearance of your wheels:
• If wheels are hot, wait for them to cool
before washing.
• Use a soft sponge or cotton cloth to
apply the same mild car-wash soap as
used for the vehicle body. Quickly rinse
off with water. Use a soft cloth to apply
the same car wax as used for the
vehicle body.
• DO NOT USE: Any kind of chemical-
based cleaners, alcohol, solvents,
gasoline, steam cleaners, scouring
pads, wire brushes or coarse abrasives
to clean your wheels.
USING THE MAINTENANCE LOG CHARTS
19-TCS-14200 TMY21 WMG Highlander.indd 3719-TCS-14200 TMY21 WMG Highlander.indd 378/6/20 1:50 AM8/6/20 1:50 AM

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
19-TCS-14200 TMY21 WMG Highlander.indd 5519-TCS-14200 TMY21 WMG Highlander.indd 558/6/20 1:50 AM8/6/20 1:50 AM

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.
19-TCS-14200 TMY21 WMG Highlander.indd 5719-TCS-14200 TMY21 WMG Highlander.indd 578/6/20 1:50 AM8/6/20 1:50 AM