When your 2022 Nissan Pathfinder's heated AND cooled seats both stop working, you've lost the entire climate seat system. This simultaneous failure of both functions points to shared components rather than individual element problems.
Shared System Components
The heating and cooling functions share several components: a common fuse or relay, the climate seat control module, the seat switch, and some wiring. When both functions fail together, the problem is almost certainly in one of these shared elements rather than both heating and cooling elements failing simultaneously.
How Cooled Seats Work
Cooled seats use small fans that push air through perforated leather. This is completely different technology from the heating element. If both systems fail, it's not coincidence—it's a shared electrical supply, control module, or switch.
Most Likely Causes
Simultaneous failure typically results from: blown climate seat fuse, failed climate seat control module, failed seat switch that controls both functions, disconnected main connector to the seat, or body control module issue affecting the climate seat circuit. The shared fuse is the most likely and easiest to check.
Diagnostic Process
Check the climate seat or accessory fuse first. Verify the switch illuminates and responds when pressed. Check for any climate seat warning messages. Inspect the main seat connector underneath for disconnection or damage. Test if the issue affects driver and passenger seats equally.
Repair Solutions
Fuse replacement for blown fuses (check why it blew). Switch replacement if the switch failed. Control module replacement for module failures. Connector repair for wiring issues. Professional diagnosis helps identify the specific failed component.