Mercedes ML350 W164 engine fan always running and ACC not working... Fault finding and repair.

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Hi
So, this car came with what at the started looked like 2 separate issues...
ACC not working... including no communications with the unit, and then the engine radiator fan always running on full blast...
In this case, quite simple... at least because I started on the right issue...😋
Follow me on this video to find out what was the problem and how to resolve it.
P.S. There was another issue with this car that I have never even mentioned, however, it is quite audible at one point throughout the video... comment if you know what it is... put the time stamp as well... :-)
Hope you enjoy the video.
Any questions or comments put them below.
Like always, thank you for watching!