Who is correct regarding the problem of a remote starter only functioning with the key in the Key cylinder?

In scenarios where a remote starter only operates with the key present in the ignition cylinder, it indicates that the system is designed with a specific anti-theft feature or a safety mechanism. Technician A may be correct if they indicate that the functioning of the remote starter depends on the presence of a key as a way to prevent unauthorized use. Many remote starter systems require the key to be in the ignition to ensure that the vehicle's anti-theft system is engaged, thereby preventing potential theft or misuse of the remote start feature.

This design ensures that the vehicle owner maintains control over starting the vehicle and adds a layer of security. The requirement for the key can also be tied to the type of remote starter system being used; some systems are integrated closely with the vehicle’s OEM anti-theft systems, necessitating this key presence for successful operation.

Understanding these mechanisms can help clarify not just the workings of remote starters but also the interaction between aftermarket devices and factory-installed security features.