2020 Mercedes-Benz C63 AMG Key Won't Turn

Troubleshooting Your 2020 Mercedes-Benz C63 AMG Key That Won't Turn: Causes and Solutions

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Reviewed by
Aisha
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 2020 Mercedes-Benz C63 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 diagnostic steps to take when a 2020 Mercedes-Benz C63 AMG key won't turn?

When troubleshooting a situation where the key of a 2020 Mercedes-Benz C63 AMG won't turn, it's essential to adopt a systematic diagnostic approach. Start with the simplest solutions, such as checking the key fob battery, as a weak or dead battery can easily prevent the key from engaging the ignition. Next, examine the steering wheel lock; sometimes, turning the steering wheel while attempting to turn the key can release any tension that may be causing the lock to engage. Ensure that the vehicle is in the correct gear, typically Park or Neutral, since this is a requirement for many vehicles to allow the key to turn. Inspect the ignition switch for any visible damage or debris that could obstruct the key's movement. Additionally, check the key cylinder for dirt or wear, as these factors can impede the key's ability to turn smoothly. Finally, if you have a spare key, try using it to determine if the issue is with the original key itself. By following these steps, you can effectively diagnose the problem and take the necessary actions to resolve the key turning issue.

What are the common problems that could cause the key to not turn in a 2020 Mercedes-Benz C63 AMG?

When dealing with a key that won't turn in a 2020 Mercedes-Benz C63 AMG, it's essential to understand the common problems that could be at play. One frequent issue is the steering wheel lock, which can engage if the steering wheel is turned after the engine is turned off, making it difficult to turn the key. Additionally, a faulty key fob or a weak battery can prevent the key from turning, so checking and possibly replacing the key fob battery is a good first step. Ignition switch problems, such as wear or electrical faults, may also hinder the key's movement, potentially requiring repair or replacement of the switch. Furthermore, a malfunctioning ignition cylinder can obstruct the key's smooth operation, necessitating inspection and possible replacement. Lastly, issues with the steering column lock mechanism can contribute to this problem, which may require professional attention. If these DIY checks do not resolve the issue, consulting a qualified mechanic is advisable to accurately diagnose and address the underlying cause.

How urgent is it to address the issue of a key not turning in a 2020 Mercedes-Benz C63 AMG?

When faced with a key that refuses to turn in your 2020 Mercedes-Benz C63 AMG, it is crucial to act swiftly. The inconvenience of being unable to start your vehicle can disrupt your daily life, making it essential to resolve the issue promptly. More importantly, a malfunctioning ignition system can pose serious safety risks, potentially leaving you stranded in an unsafe environment. Additionally, delaying repairs may lead to further complications, such as damage to the ignition components or the key itself, which could result in more expensive fixes down the line. Therefore, it is advisable to seek a professional diagnosis to identify the underlying problem and ensure your vehicle remains safe and operational. Addressing this issue without delay not only enhances your driving experience but also safeguards your investment in your luxury vehicle.

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2020 Mercedes-Benz C63 AMG Key Won't Turn | RepairPal