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: Some basics

The hands-free system enables calls to be made and received without having to take your hands off the steering wheel. This system supports Bluetooth ®. Bluetooth® is a wireless data system that enables cellular phones to be used without being connected by a cable or placed in a cradle...