spark plugs replace TOYOTA HIGHLANDER 2008 XU40 / 2.G Scheduled Maintenance Guide

2008 Highlander Scheduled Maintenance Guide
120,000 Miles or 144 Months
Replace cabin air filterReplace engine air filterReplace engine oil and oil filter1
Replace spark plugs5
Rotate tiresVisually inspect brake linings/drums and brake pads/discs4
Inspect the following: __ Automatic transmission fluid
__ Ball joints and dust covers
__ Brake lines and hoses
__ Drive belts
__ Drive shaft boots
__ Engine coolant
3
__ Exhaust pipes and mountings
__ Front differential oil __ Fuel lines and connections, fuel tank band
and fuel tank vapor vent system hoses
__ Fuel tank cap gasket
__ Rear differential oil (4WD)
__ Steering gear box
__ Steering linkage and boots
__ Transfer case oil (4WD)
Additional Maintenance Items for Special Operating Conditions2
Driving on dirt roads or dusty roads:Tighten nuts and bolts on chassis
Driving while towing:
Replace automatic transmission fluidReplace front differential oilReplace rear differential oil (4WD)Replace transfer case oil (4WD)Tighten nuts and bolts on chassis
D
EALERSERVICEVERIFICATION:
D
ATE:
M
ILEAGE:
MAINTENANCE LOG
21
1Reset the oil replacement reminder light ( MAINT REQD) or the messageOIL MAINTENANCE REQUIRED on the
multi-information display after engine oil replacement.
2Perform these service items only if you drive primarily under the conditions indicated.3Refer to Engine Coolant in theExplanation of Maintenance Items section in the back of this guide for more
information.
4Inspect thickness measurement and disc runout.5It is imperative to use the DENSO-manufactured spark plug FK20HR11 or equivalent. Maintenance services of
spark plugs are required under the terms of the Emissions Control Warranty.

2008 Highlander Scheduled Maintenance Guide
ENGINE COOLANT
Drain and flush 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 Vehicle Maintenance and Care section of the
Owner’s Manual).
NOTE:
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.
ENGINE OIL AND FILTER
Replace the oil filter and drain and refill the engine oil at specified intervals. For recommended
oil grade and viscosity, refer to the
Owner’s Manual.
EXHAUST PIPES AND MOUNTINGS
Visually inspect the exhaust pipes, muffler and hangers for cracks, deterioration and damage.
Start the engine and listen carefully for any exhaust gas leakage. Tighten connections or replace
parts as necessary.
FRONT OR 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.
FUEL LINES AND CONNECTIONS, FUEL TANK BAND AND FUEL TANK VAPOR VENT
SYSTEM HOSES
Visually inspect for corrosion, damage, cracks, and loose or leaking connections. Tighten
connections or replace parts as necessary.
FUEL TANK CAP GASKET
Visually inspect for cracks, deterioration and damage and replace if necessary.
NUTS AND BOLTS ON CHASSIS AND BODY
Re-tighten the seat-mounting bolts and front/rear suspension member retaining bolts to
specified torque.
RADIATOR CORE AND CONDENSER
Inspect for debris, corrosion and signs of damage. Have any problem repaired immediately by a
qualified technician.
SPARK PLUGS
Replace at specified intervals. Install new plugs of the same type as originally equipped. A
qualified technician should perform this operation.
EXPLANATION OF MAINTENANCE ITEMS
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