Hi everyone,

My 545i starts making some strange noise from under the hood it is the same sound as described in this video (haven't taken mine). The only difference is the noise is not continuously like in the video but about 3 seconds in very minute. Could anyone identify the possible problem?


Thank you very much!
Singer

 

Just to update:
I believe it's the A/C clutch went bad, because the noise goes away when I turn on the A/C. The bad thing is BMW seems only offer A/C compressor assembly and cost over $1000.

What will be the worst if I just ignore the noise, also can I keep the A/C engaging to prevent the problem getting worse?

Thanks in advance.

 

Its possible it is the compressor , but these compressors are clutch less and are always spinning . It works magnetically internally . Also you can find a brand new denzo for under 300 bucks . I recently did my ac system and spent around 450 bucks totall..

 

Thanks for your help! The price is also reasonable, I thought it would cost $1500

 

Well if you take it into a indy shop it might be more than 1500 . I heard the dealer charges 3000 plus .. So I did it myself and was only the cost for the parts .