Service Mode for the rear brake replacement/service in 2019, 2020, 2021, 2022, 2023, and 2024 Toyota Corolla. Using the Service Mode will allow you to fully release the electric parking brake without any additional tools or software. Enabling The Service Mode: 1. Turn the key to the Ignition ON position. In the case of vehicles with a push start button, press it twice. 2. Press the brake pedal. 3. Pull the electronic parking brake button 3 times. 4. Push the electronic parking brake button 3 times. 5. Release the brake pedal. The Park indicator on the dash should be flashing. 6. Push and hold the electronic parking brake button. You will hear the motors located on the rear calipers of the Corolla unwinding all the way. Now the parking brake is fully released and you can service your rear brakes. You will be able to push in the piston all the way without the electric parking brake holding it. This will allow you to replace brake pads or do any other service on the brakes. Disabling The Service Mode: 1. Pull and hold the electronic parking brake button. This will return the electric motor to the proper position. Wait until you stop hearing the parking brake motor noise in the back. 2. Pull the electronic parking brake button once to engage the parking brake. You are done. The difference between using the Service Mode and simply pressing the parking brake button once to disengage the parking brake is the fact that in the Service Mode, it gets released completely allowing you to fully unwind the motor.