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: Using the mechanical key (vehicles with a smart key system)

To take out the mechanical key, slide the release button and take the key out. The mechanical key can only be inserted in one direction, as the key only has grooves on one side. If the key cannot be inserted in a lock cylinder, turn it over and re-attempt to insert it...

Toyota Corolla 2019-2026 Owners Manual: Child restraint system fixed with a seat belt

A child restraint system for a small child or baby must itself be properly restrained on the seat with the lap portion of the lap/shoulder belt. ■ Installing child restraint system using a seat belt (child restraint lock function belt) Install the child restraint system in accordance to the operation manual enclosed with the child restraint system...