What should be verified regarding the shift control panel lights after servicing a transmission?

After servicing a transmission, it is essential to verify that the shift control panel lights are functional. This step is crucial for ensuring that the driver receives proper feedback regarding the status of the transmission system. Functional lights indicate that the electrical connections are intact and that the transmission is operating correctly. In many vehicles, these lights provide vital information such as gear selection and any malfunctions that may occur. If the lights are not functioning properly, it could lead to misunderstandings about the vehicle's operational state, resulting in potential safety hazards or performance issues. Thus, confirming that the shift control panel lights are operational is a fundamental part of post-service vehicle checks to ensure safety and functionality.