2008 4Runner Scheduled Maintenance Guide
ENGINE AIR FILTER
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 toRadiator,
Condenser and Hosesin theVehicle Maintenance and Caresection 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.
ENGINE VALVE CLEARANCE
Inspect for tappet noise and engine vibration and adjust if necessary. A qualified technician
should perform this operation.
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.
EXPLANATION OF MAINTENANCE ITEMS
23
2008 Scheduled Maintenance Guide4RUNNER
PROPELLER SHAFT
Lubricate the propeller shaft spiders and slide yokes with lithium-base chassis grease and the
double cardan joint with molybdenum-disulfide lithium-base chassis grease, and re-torque the
bolt. Only a qualified technician should perform this operation.
RADIATOR 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.
STEERING GEAR BOX
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.
TIMING BELT
Replace every 90,000 miles or 108 months. A qualified technician should perform this
operation.
TIRE ROTATION
Tires should be rotated according to the instructions in theOwner’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.
EXPLANATION OF MAINTENANCE ITEMS
24
