Smell of urine (or something) when AC is off | Ford Explorer Forums - Serious Explorations

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Smell of urine (or something) when AC is off

MrRothstein

Member
Joined
October 2, 2019
Messages
14
Reaction score
3
City, State
Chicago, IL
Year, Model & Trim Level
2014 PIU
Ladies, gentlemen,

I discovered a weird problem. When I turn off the AC, the air that's flowing into the car smells like urine or something similar. It doesn't matter if it's circulating the air inside the car or taking in the outside air.

When the AC is on, however, there is no weird smell.

What could cause it? Could there be a rat nest somewhere in the ventilation system that's peeing into it? Or, worse, something dead and decaying in there? But then again, how come the AC eliminates the odor?

The winter is coming and I don't really need to keep the AC on anymore, but because of the smell, I kinda have to.

Oh, the car's a 2014 PIU.

Thank you!
 






Welcome to the Forum.:wave:
There is another member who posted they have the same kind of smell but only with the A/C ON. FYI, the A/C will run in the Winter time is you have the defrost ON. There are several threads on different types of smells/odours coming in through the HVAC vents.

Peter
 






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