bm5 Posted January 3 Share Posted January 3 Hello, I own a BMW 530i (G30). I have a cold start knocking noise. I think it comes right underneath the driving seat. I have already replaced both engine mounts and gearbox mounts according to the dealer recommendation and diagnostic. but issue haven't gone away. I appreciate any advice as I have now ran out of options on how to get rid of the noise. I bought it new and have 48k miles with full service done with the dealer. After warmup or driven few miles no noise when starting or stop/start on a traffic. Quote Link to comment Share on other sites More sharing options...
duncan-uk Posted January 3 Share Posted January 3 Have they looked at the prop shaft centre bearing / coupling? Quote Link to comment Share on other sites More sharing options...
bm5 Posted January 4 Author Share Posted January 4 No they haven't as I thought it's due to the engine mounts. I'll check enquire about this. Thanks for your reply. Quote Link to comment Share on other sites More sharing options...
bm5 Posted January 4 Author Share Posted January 4 Quote Link to comment Share on other sites More sharing options...
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