W212 problem
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W212 problem
Hello everyone, I am a new member of the forum and I have a w212 220 cdi 2012 om651. I have a strange problem, my car always starts fine when it is cold, but there are times when it delays starting a little when the temperature is above 30 to 85 degrees. I have changed the crankshaft sensor and I have changed the oxygen sensor. Yesterday I took it out of service and today strangely after more than 15 starts it did it again. I reiterate that only when it is warm does it cause the problem. thanks
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W212 MY'14 M276-3.5NA @75kMi
Hello everyone, I am a new member of the forum and I have a w212 220 cdi 2012 om651. I have a strange problem, my car always starts fine when it is cold, but there are times when it delays starting a little when the temperature is above 30 to 85 degrees. I have changed the crankshaft sensor and I have changed the oxygen sensor. Yesterday I took it out of service and today strangely after more than 15 starts it did it again. I reiterate that only when it is warm does it cause the problem. thanks
I don't know what these components expected life span are on OM651.
All things Mercedes are multilayered... so heatsoaks disabling glow control may be an issue too. Thermostat may be involved in creating high heat....
Pls let us know once you get this well sorted out.
Last edited by CaliBenzDriver; Jan 26, 2025 at 03:13 PM.
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W212 MY'14 M276-3.5NA @75kMi
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everything is fine! the problem is that the defect does not have a fixed temperature! it does it with 30 degrees 40 or even 70-80! the Autel computer brings out the crankshaft sensor and the oxygen sensor as well and the check engine is on! I replaced both and yesterday the car seemed fine, while today after I did 50 kilometers and let it rest for over 2 hours it seemed to me that the problem returned but unlike other times the check engine does not come out.
Last edited by Flori212; Jan 26, 2025 at 05:51 PM.
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Joined: Apr 2019
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From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
CEL fault ACTIVE....
everything is fine! the problem is that the defect does not have a fixed temperature! it does it with 30 degrees 40 or even 70-80! the Autel computer brings out the crankshaft sensor and the oxygen sensor as well and the check engine is on! I replaced both and yesterday the car seemed fine, while today after I did 50 kilometers and let it rest for over 2 hours it seemed to me that the problem returned but unlike other times the check engine does not come out.
Do you think you can use your scanner to retrieve the CEL description ??
This will help focus your troubleshooting
Last edited by CaliBenzDriver; Jan 26, 2025 at 06:09 PM.
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Out Of Control!!
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W212 MY'14 M276-3.5NA @75kMi
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