Dan, I do have access to a friend's AC evacuator and the sensors are less than $50. If it wasn't too complicated I would attempt myself. I have had no luck with Youtube. The AC refrigerant pressure switch looks like it might be easily accessible under the car near the condenser. The generic videos I saw on replacing the Evaporator Sensor Switch range from removing a few screws to removing the entire dash.Thanks! -----Original Message----- From: Dan Penoff <d...@penoff.com> To: Okie Benz <mercedes@okiebenz.com>; rkmerce...@aol.com Sent: Fri, Jun 11, 2021 9:27 am Subject: Re: [MBZ] 2011 Mercedes C300 Air Conditioner issue
If it’s the pressure switch you would need to evacuate the system, replace the switch, pull a vacuum and charge. Do you have the tools necessary to do these things? If not, leave it to your mechanic. AC work isn’t rocket science, but you have to have the proper tools to do it. It’s not something you can swag. -D > On Jun 11, 2021, at 7:27 AM, Robert Koziak via Mercedes > <mercedes@okiebenz.com> wrote: > > Hi all, > My daughter's 2011 Mercedes Benz C300 4matic (w/90K) air conditioner >stopped working a few days ago during a heatwave. I checked the R134 charge >and the charge is fine. I cannot see if the clutch is engaging because it's >internal. I assumed that the compressor was bad so I decided to take it to my >local mechanic for an estimate. He will diagnose it today but said he rarely >sees a bad compressor on that model but rather one of two sensors (AC >Refrigerant Pressure Switch or AC Evaporator Temperature Switch) is probably >bad. If that's the case I might change myself if it's not too difficult. > Does anyone have instructions or know of a resource on how to replace the >two sensors? I know one is under the condenser and the other is near the >evaporator in the dash. > Thanks in advance! > Bob K > > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
