engine TOYOTA PRIUS 2003 1.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.*

Toyota Maintenance and Repair Support11
Do-It-Yourself Products
Genuine Toyota Chemicals
Toyota offers a complete line of products to help you keep your Toyota looking and
running like new. To safeguard your vehicle’s appearance, you’ll find everything
from fabric spot remover and glass cleaner to liquid car wash and touch-up paint.
When it’s time to get under the hood (or under the car), products such as fuel
injector cleaner, brake fluid and silicone spray will help you get the job done.
All of these products are formulated specifically for use with Toyota vehicles, so you
can be confident you’re giving your vehicle the best care possible, inside and out.
Genuine Toyota Antifreeze Coolant
Genuine Toyota Long Life Antifreeze Coolant is the same high-quality, factory-fill
product found in all new Toyotas. It provides maximum protection and durability
without the use of harmful silicates. And because it’s compatible with non-
metallic materials, it helps extend the life of water-pump seals. Don’t trust your
engine to anything less than the best: Genuine Toyota Long Life Antifreeze
Coolant.
Genuine Toyota Motor Oil
Your Toyota’s engine features highly advanced technology to help ensure superior
performance, reliability and fuel economy. Genuine Toyota Motor Oil is formulat-
ed with a special combination of lube-base stocks and an additive blend to
maximize the benefits of this technology. Make sure you’re getting the most out
of your engine by always putting the best into it: Genuine Toyota Motor Oil.

General Maintenance Information15
Determining Your Vehicle’s Maintenance Needs
Driving on Rough, Muddy or Snow-Melted Roads
•Rotate tires
•Inspect ball joints and dust cover
•Inspect brake linings/drums and brake pads/discs
•Inspect drive shaft boots
•Inspect nuts and bolts on chassis and body
•Inspect steering linkage
Driving on Unpaved or Dusty Roads
•Inspect brake linings/drums and brake pads/discs
•Inspect or change engine air filter
•Replace air conditioning filter
Extensive Idling or Low-Speed Driving for Long Distances
•Inspect brake linings/drums and brake pads/discs

General Maintenance Information17
Explanation of Maintenance Items
Brake Linings/Drums and Brake Pads/Discs
Check the brake linings (shoes) and drums for scoring, burning, fluid leakage,
broken parts and excessive wear. Checkthe pads for excessive wear and the
discs for runout, excessive wear and fluid leakage. Replace any deteriorated
or damaged parts. A qualified technician should perform these operations.
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 belttension and adjust
if necessary. Replace the belts if they are damaged.
Drive Shaft Boots
Check the drive shaft boots and clamps forcracks, deterioration and damage.
Replace any deteriorated or damaged parts and, if necessary, repack the grease.
Aqualified 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 and condenser for leaves, dirt and insects and clean
if necessary. Inspect hose connections for tightness and condition. A qualified
technician should perform these operations.
Engine Oil and Oil Filter
Replace the oil filter and drain and refill the engine oil. For recommended oil
grade and viscosity, refer to the
Owner’s Manual.
Engine Valve Clearance
Inspect for excessive lifter noise and engine vibration and adjust if necessary.
Aqualified technician should perform this operation.

General Maintenance Information18
Explanation of Maintenance Items
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.
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.
Inverter Coolant
Drain and flush the cooling system with an ethylene-glycol type coolant. A qual-
ified technician should perform this operation.
Nuts and Bolts on Chassis and Body
Re-tighten the seat-mounting bolts and front/rear suspension member retaining
bolts to specified torque.
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.

5,000-Mile Maintenance Intervals
7,500-Mile Maintenance IntervalsTo determine the appropriate maintenance
interval for your vehicle, see page 14.
Maintenance Log: 2003 Prius
7,500 Miles or 6 Months2
❑Replace engine oil and oil filter
❑Rotate tires
Dealer Service Verification:
Date:
Mileage:
5,000 Miles or 4 Months
❑Replace engine oil and oil filter
Additional Maintenance Items for Special
Operating Conditions:1
❑Inspect the following:__ Ball joints and dust covers
__ Brake linings/drums and brake pads/discs
__ Drive shaft boots
__ Engine air filter
__ Nuts and bolts on chassis and body
__ Steering linkage and boots
❑Rotate tires
10,000 Miles or 8 Months
❑Replace engine oil and oil filter
Additional Maintenance Items for Special
Operating Conditions:1
❑Inspect the following:__ Ball joints and dust covers
__ Brake linings/drums and brake pads/discs
__ Drive shaft boots
__ Engine air filter
__ Nuts and bolts on chassis and body
__ Steering linkage and boots
❑Replace air conditioning filter
❑Rotate tires
Dealer Service Verification:
Date: Mileage:
Scheduled Maintenance Log22
Dealer Service Verification:
Date: Mileage:
Note: If you drive your vehicle under any of
the special operating conditions noted on
pages 14–15, you may need to perform spe-
cific services at 5,000-mile intervals. See the
5,000-mile maintenance charts for details.

1 Specific services apply to specific operating conditions. See pages 14-15 for details.2 Maintenance services specified at this interval are provided by Toyota at no charge, excluding items
required for vehicles driven under special operating conditions. See inside front cover for details.
Maintenance Log: 2003 Prius
15,000 Miles or 12 Months215,000 Miles or 12 Months2
❑Replace engine oil and oil filter
❑Rotate tires
❑Inspect the following:__ Ball joints and dust covers
__ Brake lines and hoses
__ Brake linings/drums and brake pads/discs
__ Drive shaft boots
Additional Maintenance Items forSpecial Operating Conditions:1
❑Inspect engine air filter
❑Inspect nuts and bolts on chassis and body
Scheduled Maintenance Log23
Dealer Service Verification:
Date:
Mileage:
__ Exhaust pipes and mountings
__ Steering gear box
__ Steering linkage and boots

5,000-Mile Maintenance Intervals
7,500-Mile Maintenance IntervalsTo determine the appropriate maintenance
interval for your vehicle, see page 14.
Maintenance Log: 2003 Prius
22,500 Miles or 18 Months2
❑Replace air conditioning filter3
❑Replace engine oil and oil filter
❑Rotate tires
Dealer Service Verification:
Date:
Mileage:
20,000 Miles or 16 Months
❑Replace engine oil and oil filter
Additional Maintenance Items for Special
Operating Conditions:1
❑Inspect the following:__ Ball joints and dust covers
__ Brake linings/drums and brake pads/discs
__ Drive shaft boots
__ Engine air filter
__ Nuts and bolts on chassis and body
__ Steering linkage and boots
❑Replace air conditioning filter
❑Rotate tires
25,000 Miles or 20 Months
❑Replace engine oil and oil filter
Additional Maintenance Items for Special
Operating Conditions:1
❑Inspect the following:__ Ball joints and dust covers
__ Brake linings/drums and brake pads/discs
__ Drive shaft boots
__ Engine air filter
__ Nuts and bolts on chassis and body
__ Steering linkage and boots
❑Rotate tires
Dealer Service Verification:
Date: Mileage:
Scheduled Maintenance Log24
Dealer Service Verification:
Date: Mileage:
Note: If you drive your vehicle under any of
the special operating conditions noted on
pages 14–15, you may need to perform spe-
cific services at 5,000-mile intervals. See the
5,000-mile maintenance charts for details.

1Specific services apply to specific operating conditions. See pages 14-15 for details.2Maintenance services specified at this interval are provided by Toyota at no charge, excluding items
required for vehicles driven under special operating conditions. See inside front cover for details.
3Do not replace if replaced at 20,000 miles/16 months.
Maintenance Log: 2003 Prius
30,000 Miles or 24 Months230,000 Miles or 24 Months2
❑Replace engine air filter
❑Replace engine coolant
❑Replace engine oil and oil filter
❑Replace inverter coolant
❑Rotate tires
❑Inspect the following:__ Ball joints and dust covers
__ Brake lines and hoses
__ Brake linings/drums and brake pads/discs
__ Differential oil
__ Drive shaft boots
__ Exhaust pipes and mountings
Additional Maintenance Items forSpecial Operating Conditions:1
❑Inspect nuts and bolts on chassis and body
❑Replace air conditioning filter
Scheduled Maintenance Log25
Dealer Service Verification:
Date:
Mileage:
__ Fuel lines and connections, fuel tank band
and fuel tank vapor vent system hoses
__ Fuel tank cap gasket
__ Radiator and condenser
__ Steering gear box
__ Steering linkage and boots
__ Transmission fluid

5,000-Mile Maintenance Intervals
7,500-Mile Maintenance IntervalsTo determine the appropriate maintenance
interval for your vehicle, see page 14.
Maintenance Log: 2003 Prius
37,500 Miles or 30 Months2
❑Replace engine oil and oil filter
❑Rotate tires
Dealer Service Verification:
Date:
Mileage:
35,000 Miles or 28 Months
❑Replace engine oil and oil filter
Additional Maintenance Items for Special
Operating Conditions:1
❑Inspect the following:__ Ball joints and dust covers
__ Brake linings/drums and brake pads/discs
__ Drive shaft boots
__ Engine air filter
__ Nuts and bolts on chassis and body
__ Steering linkage and boots
❑Rotate tires
40,000 Miles or 32 Months
❑Replace engine oil and oil filter
Additional Maintenance Items for Special
Operating Conditions:1
❑Inspect the following:__ Ball joints and dust covers
__ Brake linings/drums and brake pads/discs
__ Drive shaft boots
__ Engine air filter
__ Nuts and bolts on chassis and body
__ Steering linkage and boots
❑Replace air conditioning filter
❑Rotate tires
Dealer Service Verification:
Date: Mileage:
Scheduled Maintenance Log26
Dealer Service Verification:
Date: Mileage:
Note: If you drive your vehicle under any of
the special operating conditions noted on
pages 14–15, you may need to perform spe-
cific services at 5,000-mile intervals. See the
5,000-mile maintenance charts for details.