Part and system guide
Ignition Switch
The ignition switch sends power to vehicle circuits when the key is turned or start command is requested.
What it does
Coordinates accessory, run, and start power paths in key-start vehicles.
Failure signs
- No sound when turning key
- Intermittent no-start
- Dashboard power cuts out
- Key stuck
- Accessories lose power
Maintenance notes
- Do not hang heavy keychains from the ignition.
- Check battery, cables, and starter control before blaming the switch.
- Intermittent power loss while driving should be inspected promptly.