I drove the car to work 4 days last week. On the last day, it rained unexepectedly and the car stayed in the rain all afternoon.
During the build process, I was cautious and paid attention to all the water drip lines so the water should shunt away from critical components, that being said, I was unsure how the car would fare in the heavy rain. I honestly had no intention to drive in wet conditions, let alone a downpour.
So, on my way home, I drove the usual 10 mile route, without issues which was great. However, after being parked in the garage for an hour or two, I smelled burning antifreeze. I immediately investigated and found that water had got into a circuit that caused the heater pump to pump antifreeze, and somehow that started leaking and spraying antifreeze into the low end DC-DC. The DC-DC fried itself and also blew one of the HV fuses which shut down the chain of events and prevented further damage.
I removed the low end DC-DC and confirmed it needs to be replaced. I also removed the 1000W DC-DC and need to test if that is also blown. More on that later.
Its a little frustrating because I have repair work to do, but in the grand scheme, it could have been a lot worse.
By the way, I have been using the charger without the 15uF cap that blew up, and it seems to be working as is. I have the replacement part and expect to get that installed soon. I also plan to move the LCD display to near the fuel tank port so that I no longer have to go near the charger to make charging adjustments!