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Reiner

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Question

Purchased new X3 July 1st brought it home and could not get cool air. Returned to dlr. and thought I missed a switch somewhere. They tried, no luck and recharged coolant. That lasted about two days whereupon I returned and left the car for four days. During that time they put a die in the system and checked for leaks with soap. This resulted in a new condenser install. That lasted for another two or three days. Car is at dlr. now.

Gil I am under the impression this is a new cooling system BMW is using. Have you any insight in this matter. Thanks for your help.

Answer

Hello Mr. Reiner, first of all congratulation on the new purchase. As far as your question goes you are correct. All new cars now have a new A/C system. The reason being the new refrigerant type that is now being used. For many years the refrigerant used has been the R134A, a few years ago legislation was passed in both the U.S and Europe requiring the use of a more efficient and less environmentally impactful refrigerant type. The solution that was settled on was a new refrigerant type called R1234YF.

The main issue with the new refrigerant centers around the fact that it is slightly flammable, this required a longer-lasting, less prone to leakage A/C evaporator. It also required the addition of an extra cooling device in the system. The service valve shape is also different in order to prevent a set of R134A service valve to fit. You are able to interchange R1234Yf and R134A, however, you must have recycling equipment so that the refrigerant is not vented to the atmosphere. Aside from a few safety handling that, for the time being, will mostly affect shops the systems are similar.

Having said all of that about the refrigerant another area that will still be problematic when it comes to diagnosing will be the electronics. Climate control systems are more complex than regular a/c systems. The main difference being that the system is going for a specific target pressure instead of a general cold setting. While the systems can be complex, they should be able to repair the issue without further re-occurrences. I know it can be frustrating but give them some time and you should be happy with the results. Please don’t hesitate to contact me with any further questions. Thank you.
Gil Neves

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