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: Cleaning and protecting the vehicle interior

Perform cleaning in a manner appropriate to each component and its material. Protecting the vehicle interior Remove dirt and dust using a vacuum cleaner. Wipe dirty surfaces with a cloth dampened with lukewarm water. If dirt cannot be removed, wipe it off with a soft cloth dampened with neutral detergent diluted to approximately 1%...

Toyota Corolla 2019-2026 Owners Manual: Changing the engine switch positions

1 OFF (“LOCK” position) The steering wheel is locked and the key can be removed. (vehicles with a continuously variable transmission: The key can be removed only when the shift lever is in P.) 2 ACC (“ACC” position) Some electrical components such as the audio system can be used...