I adjusted the striker and the door is still making "clunk" or "creak" noises. It seems to be a forward/backward motion (parallel to the wheels) rather than open/close of the door motion.

Could this be the door check? I'm tempted to replace it since its only a ~$16 part.

Thanks!

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Daily Driver: 02 E430 4MATIC
In the family: '03 E500 // '04 ML500 // 64 220SE