Toyota Repair: toyota tacoma a/c repairs, r 134a, vacuum pump

Question
I have to bring in my Tacoma for a leak where the bottom of the condenser coil meets the liquid line connection. I purchased a ultra-violet light to confirm this is refrigerant oil leaking. I was told that repairs included recovering gas,change O-ring,vacuum pump evacuation,and recharge. My question is that R-134a is very hygroscopic and at the very least the drier should be changed, but depending on the time the system is opened, drier and oil should be changed on a vehicle with 5200 miles under warranty. I do not want problems on down the road with acid after warranty has expired, as seems will be the case

Answer
I believe the receiver drier is built into the condenser on this model, even if not, when the system is vacuumed with the machine it will remove all moisture in the system, since it is under warranty the dealer will replace parts that they feel are needed to make a proper repair.