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Date registered: May 2006
Vehicle: 2001 E320 - Brilliant Silver/Ash: 107,000+
Location: West Virginia, USA
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Quoted: 6 Post(s)
You have a W220 and there is a forum for those. That might be something inherent to the early models so I would check there. IMO that dealer should have done the diagnostics the first time you had it there due to the check engine light. To the best of my knowledge, dirty or low oil will not trip one of those so it has to be something else.
Is the low oil light followed by the CEL happening just like it was before the oil change?
Mercedes Benz - Das beste oder nichts!