2018 Mercedes-Benz GLC63 AMG Key Won't Turn

Key Won't Turn in 2018 Mercedes-Benz GLC63 AMG Ignition

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Reviewed by
Bo Fader
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 Mercedes-Benz GLC63 AMG 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 Mercedes-Benz GLC63 AMG?

When diagnosing why the key won't turn in a 2018 Mercedes-Benz GLC63 AMG, it's crucial to follow a methodical approach that begins with the simplest solutions. Start by checking the key fob battery, as a depleted battery can prevent the fob from sending the necessary signal to the ignition system. Next, ensure that the steering wheel is not locked, as this can often inhibit the key from turning. It's also important to confirm that the gear shift is in the correct position, typically Park or Neutral, since many vehicles require this for the ignition to engage. If you have a spare key, testing it can help identify whether the issue lies with the original key. Lastly, inspect the ignition switch for any visible damage or debris that might be obstructing the key's movement. By systematically addressing these potential issues, you can effectively troubleshoot the problem and possibly resolve it without the need for professional help.

What are the common problems that could cause the key to not turn in the ignition of a 2018 Mercedes-Benz GLC63 AMG?

When faced with the frustrating situation of a key not turning in the ignition of your 2018 Mercedes-Benz GLC63 AMG, it's essential to consider several common problems that could be at play. One of the first things to check is whether the steering wheel is locked, as this can prevent the key from turning. Gently moving the steering wheel left and right while attempting to turn the key may resolve the issue. Additionally, inspect the key itself for any signs of wear or damage; using a spare key can help determine if the original key is the culprit. A dead or weak battery is another frequent cause, so ensure that your vehicle's battery is fully charged and functioning properly. If these steps do not yield results, the ignition cylinder might be faulty, which could require professional attention. It's also crucial to verify that the vehicle is in the correct gear, typically Park or Neutral, as an incorrect gear shift can hinder the key's movement. Lastly, issues with the ignition switch itself may be responsible, necessitating a closer inspection by a qualified mechanic. By systematically addressing these potential problems, you can effectively diagnose and resolve the issue of a key not turning in your ignition.

How urgent is it to address the issue of a key not turning in a 2018 Mercedes-Benz GLC63 AMG?

Addressing the issue of a key not turning in a 2018 Mercedes-Benz GLC63 AMG is of utmost importance due to the immediate risks and inconveniences it presents. A malfunctioning key can leave you stranded, disrupting your daily activities and potentially placing you in unsafe situations, particularly if you find yourself unable to start your vehicle in an emergency. Moreover, neglecting this problem can lead to more severe complications, such as damage to the ignition system or the key mechanism itself, which could result in costly repairs. Therefore, it is crucial to act swiftly when faced with this issue to ensure your safety, maintain your vehicle's functionality, and avoid unnecessary expenses.

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