check engine TOYOTA HIGHLANDER 2004 XU20 / 1.G Scheduled Maintenance Guide

Explanation of Maintenance Items
Scheduled Maintenance Logs37
Differential Oil
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.
Drive Belts
Inspect for cracks, excessive wear and oiliness. Check the belt tension and
adjust if necessary. Replace the belts if they are damaged.
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.
Selected models also require periodic inspection of the drive shaft bolt for proper
torque. A qualified technician should perform these operations.
Engine Air Filter
Replace at specified intervals. When performing inspections, check for damage,
excessive wear and oiliness, and replace if necessary.
Engine Coolant
Drain and flush the cooling system and refill with an ethylene-glycol type
coolant. Inspect the radiator, condenser and/or intercooler for leaves, dirt and
insects and clean if necessary. Inspect hoses and connections for corrosion and
leaks. Tighten connections and replace parts as necessary. A qualified technician
should perform these operations.
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, replace-
ment intervals may be different.
Engine Oil and Oil 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.