Can OnStar start the engine without the key?

[McBeau]

Yes. OnStar has a remote control function, which allows you to start the engine even without the key. Remote Start: After remotely starting the engine via OnStar, bring the key into the vehicle's sensing area, press the brake pedal, and press the start button. When the light turns green, you can drive away. OnStar is a comprehensive wireless service that utilizes wireless technology and GPS satellites, allowing users to connect with a customer service center with just one button and receive full voice assistance to resolve issues. Features of OnStar Remote Start: High reliability with significantly reduced failure rates; convenient usage, enabling remote engine start anytime and anywhere; full vehicle heating to minimize cold-start wear on the engine, effectively protecting the vehicle; easy installation.