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    4. : What to do when the diagnostic light comes on on the Mercedes C-Class engine?

What to do when the diagnostic light comes on on the Mercedes C-Class engine?
Years 2014-2021

Answer

When the yellow engine diagnosis warning light comes on, the emission limits have probably been exceeded and the engine will therefore only be able to operate in recovery mode.
Posted on: 8 December 2022 by ScegliAuto

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