CarGuy
Problems with the check engine light and rough running engine in a Mercedes ML350
(Translated from German)
Summary of the thread
A 2012 Mercedes ML350 owner is experiencing a rough-running engine upon startup, a persistent check engine light, and increased fuel consumption. Mercedes diagnosed the issue as an oil pressure problem, estimating repair costs at around €4000. Suggested solutions include checking and topping up the oil level, and considering an oil change if the oil is dirty, as low or degraded oil can impact oil pressure and engine performance.
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CarlyMechanic
Check the oil level and quality first, as low or degraded oil can affect oil pressure and engine performance. If the oil level is low, top it up and see if the issue improves. If the oil is dirty, consider an oil change. Let me know how it goes or if you have any other questions!