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: When stopping the engine with the shift lever in a position other than P (vehicles with a continuously variable transmission)

If the engine is stopped with the shift lever in a position other than P, the engine switch will not be turned off but instead be turned to ACC. Perform the following procedure to turn the switch off: 1 Check that the parking brake is set. 2 Shift the shift lever to P...

Toyota Corolla 2019-2026 Owners Manual: Checking tires

Check if the treadwear indicators are showing on the tires. Also check the tires for uneven wear, such as excessive wear on one side of the tread. Check the spare tire condition and pressure if not rotated. A - New tread B - Worn tread C - Treadwear indicator The location of treadwear indicators is shown by a “TWI” or “” mark, etc...