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2020 E450 MBUX Screen Flickering and Freezing Intermittently

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Jason D. · rep 0 · May 22, 4:16 AM · 1 replies · solved · Question

Vehicle: 2020 Mercedes-Benz E450 Coupe

My 2020 Mercedes-Benz E450 Coupe has been acting up lately with its MBUX system. The main display screen will occasionally flicker rapidly, sometimes going completely black for a second, and then return to normal. Other times, it just freezes entirely, and I can't interact with it using the touchpad or steering wheel controls.

It's really frustrating, especially when I'm using navigation. A restart of the car usually fixes it temporarily, but the problem always comes back. Is this a known issue with the MBUX system in the E-Class? I'm worried it might be a hardware problem.

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 4:16 AM

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ClearTheCode admin answer:

Intermittent flickering and freezing of the MBUX display in your 2020 E450 can be caused by several factors, ranging from software glitches to hardware malfunctions.

Common Causes:

  1. Software Glitch: The MBUX system is complex, and occasional software bugs can lead to display issues. Updates are frequently released to address these.
  2. Loose Connections: Vibrations or improper installation could lead to a loose cable connection behind the display unit or within the head unit itself.
  3. Overheating: While less common, excessive heat in the cabin or within the MBUX control unit could cause performance issues.
  4. Faulty Display Unit or Head Unit: In some cases, the display screen itself or the main MBUX head unit (which processes the graphics) might be failing.

Troubleshooting Steps:

  1. Perform a Soft Reset: Hold down the power button on the MBUX system (often the volume knob) for about 10-20 seconds until the system reboots. This can often clear temporary software glitches.
  2. Check for Software Updates: Visit your Mercedes-Benz dealer to inquire about any available MBUX software updates. These updates often include bug fixes and performance improvements.
  3. Inspect for External Factors: Ensure no accessories are blocking vents or causing interference near the display.

When to See a Shop:

If the soft reset and checking for updates don't resolve the issue, it's crucial to have your 2020 E450 inspected by a Mercedes-Benz dealership. They can connect to the vehicle's diagnostic system (XENTRY/DAS) to check for fault codes related to the MBUX system, display unit, or communication errors. They can also perform more in-depth diagnostics to determine if it's a wiring issue, a faulty display, or a failing MBUX head unit that requires replacement. Early diagnosis can prevent further frustration and potential safety concerns if navigation or other critical functions are affected.

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