2009 w204 c300. I replaced the serpentine belt just last week and afterwards, there was no squeaking or anything. So I figured my squeaking noise issue was resolved. Nope. I drive the car today and the noise is back. I look at the belt tensioner indicator and its definitely past the safe zone again like before right before changing the belt out. Seems like a belt tensioner issue, but I just want to be sure. What do you all think?
Welcome. You need to post your question in the W204 section of this forum. There will be owners there of the same model of MB you own and they'll be more than glad to help you. Just scroll down the main forum page until you get to W204 and then click on the W204 link.
