spark plugs replace TOYOTA COROLLA 2003 E120 / 9.G Scheduled Maintenance Guide

Toyota Maintenance and Repair Support10
Do-It-Yourself Products
When it’s time to replace key wear items on your vehicle, don’t settle for less
than Genuine Toyota Parts. Available exclusively through Toyota dealerships,
Genuine Toyota Parts meet the higheststandards of quality and performance and
are built to exact factory specifications. Here are a few of your vehicle’s compo-
nents that are particularly subject to wear and some benefits of replacing them
with Genuine Toyota Parts.
Genuine Toyota Iridium Spark Plugs*
•Specially designed to work with your vehicle’s ignition system.
•Feature a smaller center electrode than conventional plugs, which translates
into better performance.
•Made with iridium formaximum durability.
Genuine Toyota Brake Pads
•Friction materials selected for optimum performance when matched with
Toyota brake drums or rotors.
•Precision-machined backing plates allow pads to move freely within the
calipers for smooth, efficient braking.
Genuine Toyota Wiper Inserts
•Cutto match the exact length and shape of your vehicle’s wiper blades for a
proper and secure fit.
•Constructed of compression-molded natural rubber — not synthetic — for
superior wiping performance.
Always use the right spark plugs for yourengine. The wrong plugs can have a
negative impact on fuel economy and overall engine performance.*

General Maintenance Information19
Explanation of Maintenance Items
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
Inspect for damage, debris and signs of leakage. Have any problems repaired
immediately by a qualified technician.
Spark Plugs
Replace at specified intervals. Install newplugs 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 imme-
diately 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.
TransferCase Oil
Replace at specified intervals. When performing inspections, check for signs of
leakage. If you discoverany leakage, have it repaired by a qualified technician
immediately.

1 Specific services apply to specific operating conditions. See page 16 for details.2 Required under the terms of the Emission Control Warranty.3 Applies to Corolla Matrix 4WD only.4 Do not replace if replaced at 112,500 miles.
Maintenance Log: 2003 Corolla and Corolla Matrix
120,000 Miles or 96 Months
120,000 Miles or 96 Months
❑Replace engine air filter
❑Replace engine coolant
❑Replace engine oil and oil filter
❑Replace spark plugs2
❑Rotate tires
❑Inspect the following:__ Ball joints and dust covers
__ Brake lines and hoses
__ Brake linings/drums and brake pads/discs
__ Drive belts
__ Drive shaft boots
__ Engine valve clearance
__ Exhaust pipes and mountings
__ Front differential oil
__ Fuel lines and connections, fuel tank band
and fuel tank vapor vent system hoses
Additional Maintenance Items forSpecial Operating Conditions:1
❑Inspect nuts and bolts on chassis and body
❑Replace air conditioning filter
❑Replace automatic transmission fluid
❑Replace front differential oil
❑Replace manual transmission oil
❑Replace rear differential oil3
❑Replace transfer case oil3
Scheduled Maintenance Log37
Dealer Service Verification:
Date:
Mileage:
__ Fuel tank cap gasket
__ Radiator core
__ Rear differential oil
3
__ Steering gear box
__ Steering linkage and boots
__ Transmission fluid or oil
__ Transfer case oil
3