2018 Mazda CX-5 Key Won't Turn

Troubleshooting Common Issues When Your 2018 Mazda CX-5 Key Won't Turn and How to Resolve Them

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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 2018 Mazda CX-5 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 initial steps to diagnose why the key won't turn in a 2018 Mazda CX-5?

When faced with the frustrating issue of a key that won't turn in your 2018 Mazda CX-5, it's essential to adopt a systematic diagnostic approach. Start by examining the key itself; a worn or damaged key can easily hinder ignition. Next, check the steering wheel; if it's locked, gently turning it while attempting to turn the key may resolve the problem. Ensure that your vehicle is in the correct gear, as automatic transmissions often require the car to be in Park or Neutral for the ignition to engage. Additionally, a weak or dead battery can impact the ignition system, so verifying the battery's condition is crucial. Lastly, consider the ignition cylinder; dirt or a malfunctioning cylinder can obstruct the key's movement, necessitating a closer inspection or potential replacement. By following these steps, you can effectively diagnose the issue and take appropriate action to restore functionality to your ignition system.

What are the common problems that could cause the key to not turn in a 2018 Mazda CX-5?

When dealing with a key that won't turn in a 2018 Mazda CX-5, it's crucial to identify the common problems that may be causing this issue. One of the primary reasons could be a locked steering wheel, which often happens if the wheel is turned while the key is out. To fix this, try gently moving the steering wheel left and right while turning the key. Another potential issue is a worn or damaged key that fails to engage the ignition cylinder properly; in such cases, obtaining a new key may resolve the problem. Additionally, the ignition cylinder itself could be faulty or worn, which might require repair or replacement. It's also important to check the battery in your key fob, as a dead or weak battery can prevent the key from functioning correctly. If the ignition switch is malfunctioning, it may need to be inspected and possibly replaced by a professional. Lastly, ensure that the transmission shift lever is fully in park or neutral, as being in the wrong position can block the key from turning. By addressing these common issues, you can effectively troubleshoot and resolve the key turning problem in your Mazda CX-5.

How urgent is it to address the key not turning in a 2018 Mazda CX-5?

Addressing the issue of a key not turning in your 2018 Mazda CX-5 is of utmost importance due to several critical factors. First and foremost, a malfunctioning key can prevent you from starting your vehicle, leading to significant transportation disruptions and potential delays in your daily activities. Additionally, this problem may indicate underlying issues with the ignition system or the key itself, raising security concerns that could leave your vehicle vulnerable to theft. Ignoring this symptom could also result in being stranded, especially if the key fails to turn completely at an inconvenient time. Moreover, timely intervention can help prevent further damage to the ignition system or key components, which could lead to more extensive and costly repairs down the line. Therefore, it is essential to address the key not turning issue promptly to ensure the safety, security, and functionality of your Mazda CX-5.

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