2013 LC 200 w 43k. Was on a two hour road trip the other day. Popped in some lukewarm seltzers and expected them to be cool in about 30 min with the cool box running. Was about 70 degrees outside. However only slightly cooler air was coming in the cooler box after half hour. Fan was blowing fine but drinks were not cooled down at all- usually I have been very impressed with how cold they get. I’ve noticed the overall AC doesn’t have the “brrrr” feeling to it either. Is this a simple recharge job or something else? Still have 18 months on my Toyota platinum warranty and have read other threads where looks like cool box is quite a job. Thanks!