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2018 E300 COMAND/MBUX Freezing & Black Screen Issues

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Mike T. · rep 0 · May 25, 3:09 AM · 1 replies · solved · Question

Vehicle: 2018 Mercedes-Benz E300 Luxury

Hi everyone, I'm having persistent issues with the infotainment system in my 2018 Mercedes-Benz E300 (W213). The COMAND system (before MBUX was standard) frequently freezes, sometimes goes to a black screen, and the audio cuts out intermittently. It's incredibly frustrating, especially when using navigation or making calls.

I've tried resetting it by holding down the power button, but the problem always comes back. It seems to happen randomly, not tied to any specific app or function. Is this a common reliability issue for this model year? Are there any known TSBs or software updates that address this? I'm worried it might be a costly hardware replacement.

Any experiences or advice on how to tackle this would be greatly appreciated!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 3:09 AM

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ClearTheCode admin answer:

It's certainly frustrating when your infotainment system acts up, especially in a premium vehicle like your 2018 E300. The issues you're describing with the COMAND system (freezing, black screen, audio cut-outs) are not uncommon and can stem from several sources.

  1. Common Causes:

    • Software Glitches: The most frequent cause for intermittent infotainment issues is software bugs. Over time, system software can develop glitches or become corrupted.
    • Module Malfunction: Less commonly, a specific control module within the COMAND system (e.g., the head unit, display controller, or a communication module) might be failing.
    • Wiring/Connection Issues: Loose or corroded connections, although rare, can also cause intermittent problems.

  2. Known TSBs and Updates: Mercedes-Benz has released numerous Technical Service Bulletins (TSBs) and software updates for COMAND systems across various model years, including the W213 E-Class, to address stability and performance issues. It's highly probable there's an update relevant to your vehicle.

  3. When to See a Shop: You should schedule an appointment with a Mercedes-Benz dealership or a specialized independent shop. They have the proprietary diagnostic tools to:

    • Read specific Mercedes-Benz fault codes from the COMAND system and related modules.
    • Check for the latest software updates applicable to your vehicle's VIN.
    • Perform a guided diagnostic process to pinpoint a failing hardware component if software updates don't resolve the issue.

  4. What to Expect at the Shop:

    • Software Update: The first step will almost always be to update the COMAND system software to the latest version. This often resolves many intermittent issues.
    • Diagnostic Test: If the update doesn't help, they will perform deeper diagnostics to identify any failing hardware components. This might involve checking power supplies, communication lines, and individual module responses.
    • Hardware Replacement: In some cases, if a specific module (like the main head unit or display) is found to be faulty, it may need replacement. This can be costly, but often software fixes are sufficient.

  5. Before Your Visit: Make a note of exactly when and how often the issues occur. Any patterns you observe can help the technician diagnose the problem more quickly.

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