AC/Heated steat works for 3 mins then shuts off until restarting the car

[AJ170]

One day my ac seat worked fine, next day it turns on for about 3 mins, you can feel the cool air blowing, and then the light on the switch goes out and doesn't come back on until you restart the car, passenger seat works fine,

What should I be looking at to trouble shoot this?

[AJ170]

Im guessing the sensor is detecting high temps, there's nothing under my seat, filter was cleaned about 6 months ago, fan blades have dust on them, I'll try cleaning those first, looking for more suggestions

[VStar650CL]

That kind of behavior is almost always from slow or restricted airflow, but in addition to finding the cause, you should pop the power connector to the control unit and make sure the ground terminal isn't smoked. Once a flow issue occurs, the affected Peltier element loses the benefit of the Seebeck Effect and starts drawing way more current than it should. Nissan didn't do a great job with the connector design, so the result is usually heating and eventual melting of the ground pin.

[mrnix]

I replaced and upgraded the ground wire in mine after the harness melted. Knock on wood it's been fine for several years since. I made a post on this somewhere on this site, will link if I can locate it.

[mrnix]

I replaced and upgraded the ground wire in mine after the harness melted. Knock on wood it's been fine for several years since. I made a post on this somewhere on this site, will link if I can locate it.

See this thread. I haven't taken pics to update but about a year later I upgraded the ground wire to a larger gauge and it's (fingers crossed) been fine for years since.
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