It is a long hectic job but it is worth the try.I have installed the digital climate control in my 2007 corolla axio X, 3 years ago and alhumdulilah it is working like a charm. You need to install the cabin temperature sensor with uncut wiring, as being mentioned above in the thread. The cooler, heater box also need to be changed. During the swap of heater cooler box, my car's original refrigerant was preserved by toyota dealershinp ac recycling machine and later added back.
