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Analog speedometer vs digital speedometer different readings

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Old May 18, 2020 | 07:00 PM
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Mraisi
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Analog speedometer vs digital speedometer different readings
Hi all!


I'm new here. I own a 2017 c43 with no issues at all except that after the speed of 80 km the analog speedometer gets slower than the digital speedometer by Around 25 kmh difference.
there is no code in the car when it was checked.
the correct speed is from the digital speedometer in both gadge cluster and head up display.
I'm running stock rim and wheel size

Please help!

Last edited by Mraisi; May 18, 2020 at 07:09 PM. Reason: Adding more information
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Old May 27, 2020 | 08:19 AM
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Mraisi
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Hi guys!


please help.
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Old May 27, 2020 | 09:23 AM
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places
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No idea here, but clearly something is amiss. Likely software. This requires a trip to the dealer. Is the car still under warranty?
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Old May 27, 2020 | 09:50 AM
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+1, I would take that into the dealer
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Old May 27, 2020 | 12:22 PM
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2018 C43
Hook up obd2 and see if any error
​​​​​​code comes up, unless you have access to MB star diagnosic tool.

If not unplug the battery overnight and see if it resets anything.

If you have warranty, best to bring it to the dealer.
​​
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