These late model BMW’s 335’s seem to have a weak AC evaporator. We seldom see evaporator problems on cars this new but these models had a weak unit. Our local BMWdealer has 9 of these units in stock, so that tells you something. Unfortunately, this is not a simply repair. The first step is to evacuate the r132 freon from the air conditioning system using our Snap-On AC service machine. Then everything inside the car forward of the steering wheel is removed (this is the time consuming process). Next the HVAC control box is removed. The old evaporator is then removed. You can see the oil discoloration where the evaporator has been leaking. A new evaporator is installed and then, as they say in the repair manual, installation is the reverse of dis-assembly. Finally the freon is refilled, the steering angle sensor in the steering wheel is calibrated, codes are checked and cleared in the relevant control units and the car is test driven. Work is being done by Brandon, our master certified BMW tech.
