They only way Ito find the leak is to pull the heater core I think. You say the connection at the core and not the hose connections by the right frt tire can leak? I can not find an exploded view of it anywhereI would guess the fitting or fittings are leaking where they screw into the heater core. That is what was leaking on the other ones too but could be wrong.
That makes sense because it is leaking up in the right hand corner (if setting in passenger seat) where the nipples are. It is a 2017. Is it a pain to get to it, I have the extended warranty until Oct of 21... but haven't called to see if it's covered, I just bought itYes it was one of the connectors that screw into the heater core were leaking. The heater hose slips over those connectors unless the newer heater cores the nipple is made into the core. These weren't as they had 2 fittings that screwed into the heater core.
I am not saying it couldn't be the core as it very well could be, just stating what we found on other machines.