Al Catraz

OK...
2000 S500 -- A/C does not blow cold air..
I suspect the Refrigerant temp sensor is bad, but need to test it..
Refrigerant Temp Sensor is flickering RAPIDLY between 26.7 & 26.8 Celsius

I have seens somewhere on MBWorld (I think) a thread about replacing the Refrigerant Temp Sensor.. But I cannot find it AGAIN..
I need to know if removal of the Temp Sensor will release all the R134 out of the system..
Can anybody give me a SOLID ANSWER?

Also the Pressure Sensor next to it - which I think will release the R134

If I were to design the temp sensor, I would make a sealed sleeve for the sensor, so it can be replaced without leaking..






Many thanks

ECSTuning

Al Catraz,

The refrigerant temperature sensor threads into the Receiver / Drier, and if you remove it, all of the refrigerant in the system will come out, and rapidly.

Do not remove this temperature sensor unless all of the refrigerant has already been removed from the system.

If your temperature sensor has failed, we offer a new one on our site. You can get to it by clicking HERE, or by clicking on the photo of the temperature sensor below.





I hope this information helps out, and if there is anything else I can help you with, please feel free to post or send a PM!

wallyp

I doubt that your problem is a defective refrigerant sensor.

With the system operating, feel of the refrigerant tubes - the tube going into the condenser (heat exchanger in front of the radiator) should be hot. If not, the compressor is not operating. The tube going from the car interior back to the compressor should be cold. If it is, the refrigeration system is working, and your problem is in the temp control system, such as a faulty duovalve.

Al Catraz

Thank you all for reponses
I am grateful to know NOT TO PULL SENSOR OUT.. :-)
Also am grateful to learn about testing the tubes - in/out - for analysis !

If I were to design the sensor housing, I put it in a "sleeve" - aluminum maybe - so it will get temperature easily, yet won't lose the refrigerant if pulled out...

I did not have a chance to work on the car since - but I will soon, now that I got great advice!

many thanks!