Toyota Corolla: Maintenance and care / Do-it-yourself maintenance

Emission inspection and maintenance (I/M) programs

Some states have vehicle emission inspection programs which include OBD (On Board Diagnostics) checks. The OBD system monitors the operation of the emission control system...

Do-it-yourself service precautions

If you perform maintenance by yourself, be sure to follow the correct procedure as given in these sections. Maintenance WARNING The engine compartment contains many mechanisms and fluids that may move suddenly, become hot, or become electrically energized...

Other information:

Toyota Corolla 2019-2026 Owners Manual: Battery

Check the battery as follows. ■ Battery exterior Make sure that the battery terminals are not corroded and that there are no loose connections, cracks, or loose clamps. A - Terminals B - Hold-down clamp ■ Before recharging When recharging, the battery produces hydrogen gas which is flammable and explosive...

Toyota Corolla 2019-2026 Owners Manual: Inspection and adjustment procedure

A - Tire valve B - Tire pressure gauge 1 Remove the tire valve cap. 2 Press the tip of the tire pressure gauge onto the tire valve. 3 Read the pressure using the gauge gradations. 4 If the tire inflation pressure is not at the recommended level, adjust the pressure...