* Prevent accidental movement: It stops the car from unexpectedly lurching forward or backward while the engine is starting, potentially causing injury or damage.
* Reduce the risk of accidents: If the car were in gear while starting, it could unexpectedly move, leading to collisions.
If your car is failing to start *only* when not in neutral, the problem likely lies with this neutral safety switch. It might be:
* Faulty: The switch itself could be malfunctioning, failing to register the correct position of the gear selector.
* Misaligned: The gear selector linkage might be slightly out of adjustment, preventing the switch from making proper contact.
* Wiring issue: There could be a problem with the wiring connecting the switch to the starting system.
* Transmission problem (less likely): While less common, a problem within the transmission itself *could* interfere with the switch's operation, though this usually manifests with other transmission issues as well.
If your car is not starting even when in neutral or park, that's a separate issue likely related to the battery, starter motor, or other components of the starting system. But focusing on the *only starting in neutral* aspect points to the neutral safety switch.
You should have a qualified mechanic diagnose and repair the issue. Attempting repairs yourself without experience can be dangerous.
