Simple Issues (You might be able to fix yourself):
* Steering Wheel Lock: This is the most common cause. Try gently jiggling the steering wheel while turning the key. The lock mechanism might be engaged. If the car is parked on an uneven surface, this is more likely.
* Worn Key: Over time, keys wear down and can no longer precisely fit the ignition cylinder. A slightly bent or damaged key will also cause difficulty. Try a spare key if you have one.
* Dirt or Debris: Dust, debris, or sticky substances can accumulate in the ignition cylinder, making it hard for the key to turn. Try using compressed air to blow out any debris. Do not use lubricants like WD-40 in the ignition, it can attract more dirt and gum up the mechanism. A graphite lubricant specifically designed for locks is a better option if you choose to use lubricant.
* Shift Lever Not in Park (Automatic Transmission): Make absolutely sure the car is fully in park. The mechanism that prevents starting the car unless it's in park can sometimes bind and make the key hard to turn.
More Complex Issues (Likely require a professional):
* Worn Ignition Cylinder: The cylinder itself might be worn out, causing the key to bind. This often requires replacement of the ignition cylinder.
* Broken Ignition Switch: The switch inside the ignition cylinder might be malfunctioning. This is a more serious issue and requires professional diagnosis and replacement.
* Steering Column Issues: Problems with the steering column can interfere with the ignition. This is less common but can cause binding.
* Faulty Anti-Theft System: A malfunction in the car's anti-theft system might be preventing the key from turning. This often requires a professional diagnosis with specialized tools.
Troubleshooting Steps:
1. Try a spare key: If you have one, this immediately tells you if the problem is with the key or the ignition.
2. Jiggle the steering wheel: This is the quickest way to rule out the steering column lock.
3. Check the transmission: Ensure the car is firmly in park.
4. Use compressed air: Carefully blow compressed air into the ignition cylinder to remove debris.
5. If none of these work: Take your vehicle to a qualified mechanic or locksmith. Trying to force the key could damage the ignition cylinder, leading to more costly repairs.
Don't force the key – this could cause more damage. A professional diagnosis will pinpoint the exact cause and allow for the correct repair.
