Check if there's an autofocus sensor pre‑installed on the top of your replacement rear cameras. If there isn't, follow the remaining steps to remove and transfer the sensor from your old cameras.

Apply a heated iOpener to the top of the rear cameras to heat the adhesive securing the autofocus sensor.

Alternatively, you can lightly heat the sensor with a hair dryer—be careful not to overheat the sensor, as the plastic can warp.