# CarKeyRemoteControl The object you use to start a new vehicle-related session. ``` class CarKeyRemoteControl ``` ## Overview Use a [`CarKeyRemoteControl`](/documentation/CarKey/CarKeyRemoteControl) object to create the session your app uses to communicate with the vehicles your company manufactures. You don’t create an instance of this object. Instead, call the [`start(delegate:subscriptionRange:with:)`](/documentation/CarKey/CarKeyRemoteControl/start(delegate:subscriptionRange:with:)) class method to request a new session object. The system retrieves the relevant vehicle information from person’s Apple Wallet and adds vehicles that match your company’s make to the session. Start a new session only when your app is running in the foreground. If your app enters the background, end the current session and start a new one when your app returns to the foreground. ## Topics ### Creating the Session Object [`class func start(delegate: any CarKeyRemoteControlSessionDelegate, subscriptionRange: ClosedRange?, with: DispatchQueue?) async throws -> CarKeyRemoteControlSession`](/documentation/CarKey/CarKeyRemoteControl/start(delegate:subscriptionRange:with:)) Creates and returns a new session object to access the provisioned vehicles. ### Type Methods [`class func registerForLaunchOnCarKeyEvent() throws`](/documentation/CarKey/CarKeyRemoteControl/registerForLaunchOnCarKeyEvent()) Register your app to be relaunched in the background on CarKey events. Under certain conditions the system will not relaunch the app regardless of CarKey events. [`class func unregisterForLaunchOnCarKeyEvent() throws`](/documentation/CarKey/CarKeyRemoteControl/unregisterForLaunchOnCarKeyEvent()) Unregister your app so it’s no longer relaunched in the background on CarKey events. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)