GLC63s, GLC63, GLC43 AMG SUV and Coupe (X253, C253) 2015 - Present

2020 GLC63 ECU reset?

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Old 08-29-2020, 08:45 PM
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GLC63 2020
2020 GLC63 ECU reset?

So when I picked up the 63 (coming from a 43) it felt like it was just so responsive and effortless. After 1500 miles it now feels a little slow and sluggish, even in s+. I tried both the ECU reset via the pedal (did nothing), and then I disconnected the battery for 45min as well. The clock on the dash reset, so it seems power was at least cut, but after the going for a drive it doesn't feel the slightest bit different (slow).

What am I doing wrong? Perhaps the ECU doesn't erase the data in 2020 models?
Old 08-31-2020, 09:00 PM
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Any takers? Anyone else successful for a 2020?
Old 09-01-2020, 10:57 PM
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Hard to say, really need real world data like 1/4 mile or a dragy to know if its doggier etc..
Old 05-02-2021, 03:00 PM
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bumping up to see if anyone knows how to do this?

Local dealer said by creating a new profile (mbux...) it would do this. Tried that, didn't seem to change anything.

Surely has to be a way to do it?
Old 05-03-2021, 03:57 PM
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I agree with 65ford, spend 150 bucks and get some real data and then lets see if there is an issue.
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