Reduced blower speed when using power windows???

mykel_cx5

Member
:
CX-5
Hello from -40 (with windchill) Canada!

I have a 2015 CX-5.
I don't know what my issue is. When the fan is on (heating or cooling) and I go to use the power windows, the fan speed decreases noticeably.
It very obvious when the fan is on the highest setting. I thought it could be a bad battery, but just replaced and still the same issue. Any ideas?

Thanks for any help!
 
Nope normal. Even with a deep cycle battery (less voltage drop) it still happens. Same if you operate multiple windows at once or activate a seat control.
 
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