Join Date: Jun 2008
Location: Boerne, TX
Vehicle: 2016 SLK55, Mystic Blue, Black Nappa, P3, Performance Pckg, Carbon Trim, Illuminated Doorsils
Other Toys: 1700cc Vulcan Cruiser, all black and chrome
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 117 Post(s)
Thanked 79 Times in 39 Posts
AC blows cold but not COLD
Mods sorry if this has been answered. I could SWEAR I read a thread a while back about someone with the same issue, and their solution was replacing a faulty transistor or capacitor inside/on the MAF sensor, despite it not having thrown a code, but I cannot find that thread anywhere.
My 55 is now my 4th SLK (counting the six months with the SLC 43), and they have always had ICE COLD air when turning the AC control all the way down to 60 or the blue dot. This car's AC doesn't do that. The compressor is fine and there are no detectable freon leaks according to the dealer, yet my gut tells me it is "off". It doesnt help that my wife's 2016 C300 also has ICE COLD air on its lowest setting.
I recall a thread about a similar issue where something in the MAF sensor was at fault despite no codes, but searches for AC, air conditioner, cold air, MAF, and Mass Air Flow have been fruitless. I even tried to scan through 16 pages of R172 threads.
Any help would be appreciated. Dealer won't even check anything else since there are no codes, unless I can find the relevant thread here.