Why Gear shifter won't lock into park?

A gear shifter that won’t lock into park could be due to several issues, including a faulty shift interlock system, a malfunctioning brake light switch, or a problem with the transmission linkage. If the brake light switch is not working properly, it may not allow the shifter to move into the park position. Additionally, worn or damaged components in the shifter assembly could prevent it from engaging correctly. It’s advisable to consult a professional mechanic to diagnose and resolve the issue.