Here's a breakdown of troubleshooting steps, progressing from simple to more complex:
1. Simple Checks:
* Steering Wheel Lock: Make sure the steering wheel isn't locked. Gently jiggle the wheel while trying to turn the key.
* Shift Lever: Ensure the gear selector is in Park (P). If it's an automatic, try gently rocking the vehicle back and forth a little.
* Key Condition: Check if the key is damaged, bent, or worn. Try a spare key if you have one. A worn key might not be engaging properly with the ignition cylinder.
* Debris: Look into the keyhole for any debris (dirt, lint, etc.) that might be obstructing the key. Gently remove any debris with compressed air or a toothpick.
2. More Involved Checks (May Require Professional Help):
* Ignition Switch: This is a common culprit. A faulty ignition switch may need to be replaced, which is best done by a qualified mechanic. Symptoms of a bad ignition switch can include intermittent starting problems, no starting at all, or other electrical issues.
* Steering Column Issues: Problems with the steering column lock or related components can prevent the key from turning. This is a more complex repair and requires professional attention.
* Broken Key: The key might be broken internally, even if it looks intact. A locksmith can determine this.
* Wiring Problems: There might be a problem with the wiring harness related to the ignition system. This requires a professional electrician or mechanic to diagnose and repair.
3. What to Do:
* If you have a spare key, try it. This immediately tells you if the problem is with the key or the vehicle.
* If the spare key doesn't work, call a locksmith or a tow truck. A locksmith may be able to get the car started, while a tow truck can take it to a qualified mechanic for diagnosis and repair.
* Avoid trying to force the key. This will likely worsen the problem and potentially damage the ignition system.
Important Note: Attempting to bypass the ignition system yourself (e.g., using a screwdriver) is dangerous and can cause further damage or even injury. It's always safer and more cost-effective in the long run to get professional help.