Hello people,

I'm not quite sure whether its normal or not but my IS250 (2014) blows hot air from the vents when the A/C is off during acceleration.
If it's a malfunction, what could be the problem?

 

This may sound like a dumb question, but is the fan turned off as well? Also do you have the vents set to recirculating or to outside air? That could be your issue.

 

Normal. It allows for some venting and its summer. All cars do that. Hit the button for recirculating when the A/C is off and it should be fine.
Or, keep the A/C on for a minute or two and then turn it off, that should cool it down.