Date registered: Sep 2007
Vehicle: 2006 E320 CDI
Location: Dayton, OH
Mentioned: 2 Post(s)
Quoted: 41 Post(s)
I've got a problem with the car that isn't on my original list. Now that it's getting warmer again and I had a 4 hour drive today, I was reminded today.
What happens is that on more humid days, the A/C stops putting out cold air. I can turn the fan on maximum and very little air flows out of the vents and the car gets warmer and warmer inside. If I stop and turn off the car for 10-15 minutes and get back in, then it works fine again for another hour or so, then I repeat and it's working again. (I've had this occur on other cars as well on longer trips.) It's as if the evaporator coil is icing over blocking air flow and when I stop, it melts off and then will work fine until it ices over again. That's my best guess anyway. It gets very humid here in Ohio and today was humid.
Anyone have this issue? What's the cure? Clear a blocked drain hole? Vacuum dirt off the evaporator? Or is my diagnosis incorrect?
EDIT - I called the dealership and then did a search here and found a service bulletin about how humidity sensors were omitted from vehicles starting in 2006. I checked and sure enough, mine was omitted. So this could be the problem indeed! I bought a used sensor off of Fleabay for $10. Now just to get it recoded for the sensor as present. Hopefully that works!