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The mkiv Supra Owners Club

Air con compressor not kicking in on my merc


Benzsupra

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Just brought myself a W210 e300td. When i got it i put the air con on and it appeared to get slightly colder so i just put it down to a re gas.... Had it re gassed today and there was no leaks and it has been fully gassed and oiled up but it wasn't making any difference. It is only now i realize that where the air con compressor is supposed to kick in periodically and you hear the revs get higher, this doesn't happen. I called a specialist and he said it sounds electrical but i checked the fuses and they are fine. now it has to be wiring or compressor unless anyone has any other ideas? does anyone know a test i can do to see if it is either of these? The specialist started talking about running a feed from the battery to one of the top up pipes to see if the compressor kicks in??? anyone heard of this?

 

Help please.....

 

Thanks for reading,

Ben.

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I assume the print out confirms the correct data for quantity for that model. As A/C system has pressure switch will not run system if over/under pressurized. Would be worth checking a couple of simple things like any related fuses for the A/C heater controls etc not blown and the electrical connection on the compressor for the clutch is connected and if feed is present with A/C on.

 

Also may be worth following A/C lines around and see if you can find pressure swich make sure that's connected.

 

Could be a fault registered with the A/C control itself where i guess it may be quicker to get some fault codes exracted to see whats going on, especially if the compressers not cutting in at all.

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