* Worn ignition cylinder: This is the most common culprit. Years of use wear down the tumblers and locking mechanism within the cylinder, making it difficult for the key to engage properly.
* Broken or stuck key: Check your key carefully for any bends, breaks, or wear. A damaged key won't engage the cylinder correctly.
* Steering wheel lock: If the steering wheel is locked, it will prevent the key from turning smoothly. Try gently jiggling the steering wheel while turning the key.
* Shift lever not in park (automatic) or neutral (manual): The car's safety mechanism prevents the key from being removed or easily turning unless the transmission is in park (automatic) or neutral (manual).
* Damaged ignition switch: The ignition switch itself could be faulty, preventing proper key operation.
* Foreign object in the ignition: Something small might be lodged in the ignition cylinder, obstructing the key.
What to do:
1. Try a different key: If you have a spare key, try using it. This will immediately tell you if the problem is with the key or the ignition cylinder.
2. Check the steering wheel lock: Try gently moving the steering wheel back and forth.
3. Check the transmission: Ensure your transmission is in Park (automatic) or Neutral (manual).
4. Use lubricant (with caution): You can try spraying a small amount of *graphite* lubricant (NOT WD-40) into the ignition cylinder keyhole. Use sparingly and avoid getting it on the surrounding areas. This is a temporary fix and doesn't address the underlying problem.
5. Professional help: If none of these solutions work, you'll need to have a qualified mechanic or locksmith examine the ignition system. They can diagnose the exact issue and replace the ignition cylinder, key, or ignition switch as needed. A faulty ignition system can be a security risk, so don't delay seeking professional help.
Important Note: Avoid excessive force when turning the key. Forcing it could damage the ignition cylinder further.
