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Intermittent CEL

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Old Dec 1, 2025 | 03:01 PM
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  #26  
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From: Apollo, PA
2016 CLS 63 AMG
WIS Guide needed
I bought WIS and installed on my laptop. Okay, I surrender! Need a WIS instruction manual or tutorial.
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Old Dec 1, 2025 | 03:14 PM
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W212 MY'14 M276-3.5NA @75kMi
Originally Posted by Corvetteguy
I bought WIS and installed on my laptop. Okay, I surrender! Need a WIS instruction manual or tutorial.
I understand this is a professional software that requires training to get anything done.... so few ppl are able to use it well.
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Old Dec 1, 2025 | 05:42 PM
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Working at it. What does WIS call the ecu?
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Old Dec 1, 2025 | 07:10 PM
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W212 MY'14 M276-3.5NA @75kMi
won't be long
Originally Posted by Corvetteguy
Working at it.
What does WIS call the ecu?
it has a designation NUMBER instead of a name...

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Old Jan 16, 2026 | 10:50 PM
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Update
All of the month of Dec I experienced the problem daily. Half the time the problem came with the CEL. Code is always coil 5.
3 weeks ago I replaced #5 coil. Problem solved! Very happy with the car performance, no more problem and CEL coming on.
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Old Jan 17, 2026 | 12:07 AM
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W212 MY'14 M276-3.5NA @75kMi
Originally Posted by Corvetteguy
All of the month of Dec I experienced the problem daily. Half the time the problem came with the CEL. Code is always coil 5.
3 weeks ago I replaced #5 coil. Problem solved! Very happy with the car performance, no more problem and CEL coming on.
That is good progress
Now you want to replace ALL your remaining old coils so all your cylinders get fired equally as well as possible.
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