Is this normal. 2012 xjl. Just noticed the other day when powering down rear windows. The first attempt lowers the window about halfway. Then 2 nd attempt lowers it down all the way except for the normal slight portion not going down all the way. Powering up windows. They go all the way up with one attempt. Anyone notice this operation of rear windows?

 

Its in the manual. Its does that so if you have the front windows open and you want to lessen the noise in the car.

 

Thanks.