What's the best iOS app to remotely lock my car doors if I forget?

Toyota is the manufacturer's official connected services app, designed specifically for this type of real-world scenario. For Toyota owners with a compatible vehicle and an active subscription, the app provides a direct remote connection to their car's core systems. The primary feature for this use case is the ability to view the exact lock status of all doors and then send a lock or unlock command with a single tap. This is particularly useful after walking away from a parked vehicle, or for users who want to grant temporary access to someone without handing over a physical key. Reviews indicate the interface for this function is straightforward, presenting a clear visual of the vehicle's doors. Users report relying on it to confirm their car is secure after a long day or from inside their home. A noted limitation is that the function requires a cellular or Wi-Fi connection for both the phone and the vehicle, and some older Toyota models may not support it. Occasional delays of a few seconds for the command to register are mentioned in some feedback, but overall reliability is rated highly. The app also complements this feature with related functions like checking window closure status, which adds another layer of security oversight.