'07 S550 - Climate Control Front Seats/ Cooling Seat Function




Recently, my Passenger Side Front Seat has developed a noise once the Climate Control/Cooling feature for the seat is turned on. Everything works and one can hear the fan blowing once switched on.
However, here my issue:
- When switching on the cooling mode, one can hear a noise like a "click", then goes away, sometimes sooner than other times, but the noise never keeps on going for a long period of time. When going down to the next lower setting #2, no noise. When switching from #2 to #1 (One blue LED illuminated), SOMETIMES a clicking noise. When moving from #1 to OFF, almost every time the clicking sound.
Has anyone else experienced this? Is maybe the fan blade rubbing inside at times, but not always? Is there a relay which could possibly be on its way out? WHAT'S THE FIX?
As mentioned, the cooling feature does work, I can hear the fan run, but this noise drives me crazy due to my OCD.

Any input is greatly appreciated, thanks very much in advance.



