2011 Rogue S. 104k kms. Maintenance up to date. Issues I’ve noticed the last couple years.
1) Cvt fluid is gets hot during summer days (90-95+C). As per cvt250 app
2) Last year during cold spell cabin heat was only warm.

This year I installed a Hayden 696 cooler and 4 port beehive; seemed to help the cvt temps a little, but can still hit 90-91C during stop n go traffic. I’m wondering if a faulty coolant valve located in the head is the issue, but I don’t know exactly how it works.
I looked at the fsm and got confused with the diagrams of coolant flow. Can anyone explain in layman terms?
Can the coolant overheat the cvt fluid in the beehive?
Thanks,

The water control valve is basically a thermostat for the cylinder head, the thermostat itself is for the block. Most of the stuff in the car that wants "quick heat" like the heater core and CVT beehive run off circuits behind the water control, because the head heats up faster than the block. Once the engine hits temperature they should both open up. Nissan stopped using the water controls starting with the '13 Altimas, so only the gen1 Rogues have them.