2003 INFINITI FX45 Key Won't Turn

Troubleshooting Steps to Resolve Ignition Issues with Your 2003 INFINITI FX45 Key That Won't Turn

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Reviewed by
Devin Cabugcal
Written by RepairPal Car Genius
Updated January 14, 2025
0%
35% chance it's the
Binding Steering Column/Lock
0%
27% chance it's the
Ignition Switch
0%
20% chance it's the
Ignition Key
0%
18% chance it's
Something else
The most common reasons a 2003 INFINITI FX45 key won't turn are a binding steering column/lock, an ignition switch issue, or a problem with the ignition key.
  • Binding Steering Column/Lock: A binding steering column or lock can occur due to a worn or damaged steering column assembly or issues with the ignition lock mechanism.
  • Ignition Switch: A faulty ignition switch can prevent the engine from starting or cause intermittent electrical issues, affecting the vehicle's ability to run properly.
  • Ignition Key: A worn or damaged ignition key or ignition cylinder can prevent the key from turning, leading to starting issues.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

What are the steps to diagnose why the key won't turn in a 2003 INFINITI FX45?

To effectively diagnose why the key won't turn in your 2003 INFINITI FX45, start with the simplest solutions before moving on to more complex issues. Begin by examining the key itself; a damaged or worn key can easily prevent ignition. If you have a spare key, try using it to see if the problem persists. Next, check the steering wheel; sometimes, the steering lock can engage, making it difficult to turn the key. Gently wiggle the steering wheel left and right while attempting to turn the key. If that doesn’t work, inspect the vehicle's battery. A weak or dead battery can disrupt the ignition system, so ensure the battery is in good condition. Additionally, verify that the gear shift is in the correct position, as many vehicles require the gear to be in Park or Neutral for the key to turn. If these steps do not resolve the issue, examine the ignition cylinder for signs of wear or damage, as a malfunctioning cylinder may need replacement. Lastly, consider the ignition switch itself; if it appears faulty, consulting a professional mechanic for diagnosis and potential replacement may be necessary. By following this diagnostic approach, you can systematically identify and address the issue with your vehicle's ignition.

What are the common reasons why the key won't turn in the ignition of a 2003 INFINITI FX45?

When faced with the frustrating issue of a key that won't turn in the ignition of a 2003 INFINITI FX45, it's essential to understand the common problems that could be at play. One frequent culprit is the steering wheel lock, which can occur if the steering wheel is turned after the key has been removed. To resolve this, gently wiggle the steering wheel while attempting to turn the key. Another possibility is that the key itself may be worn or damaged; in this case, trying a spare key or having a new one made can often solve the problem. Additionally, the ignition cylinder might be faulty or worn, and gently jiggling the key while turning it can sometimes help. It's also crucial to check the vehicle's battery; a dead or low battery can prevent the ignition system from functioning properly. Lastly, if none of these solutions work, the ignition switch may be defective, which would require professional inspection and repair. By systematically addressing these issues, you can effectively troubleshoot and potentially resolve the ignition key problem on your own.

How urgent is it to address the issue of a key not turning in a 2003 INFINITI FX45?

When faced with a key that refuses to turn in your 2003 INFINITI FX45, it is crucial to act swiftly. The inability to start your vehicle not only disrupts your daily activities but can also escalate into more serious safety concerns, especially if the ignition system is compromised. Ignoring this issue may lead to further damage, potentially resulting in costly repairs that could have been avoided with timely intervention. Moreover, in emergency situations, a malfunctioning ignition could prevent you from starting your vehicle when you need it most, posing a significant risk to your safety. Therefore, addressing the problem promptly by consulting a qualified mechanic is essential to diagnose the underlying cause and mitigate any future complications. Taking immediate action ensures your vehicle remains reliable and safe, allowing you to avoid unnecessary inconveniences and expenses.

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Troubleshooting 2003 INFINITI FX45 Key Won't Turn Issues