$1200 eBike. That easily explains the issue. XOD hydraulic brake sets are pretty cheap. replacements are readily available.
I’m suspecting a lower tier ebike with all budget components is being ridden like a motorcycle. it’s just not capable of handling the hard use riding down “the steepest” street in town.
i’m not clear on the stated temperature. when the outside air temp is over 70F?
the only sensible solution means upgrading to a good lower priced brand name brake system with LBS support.
i don’t understand why buyers think a bike priced that low would be an able downhill bike. my quality motor, controller, battery alone are significantly higher buying components with parts purchased with dealer discounts.