The pump is located inside of the washer fluid reservoir.
The washer fluid for the liftgate is supplied by the reservoir for the windshield ( according to the owners manual )
According to the 2007 Ford Focus Owner Guide : The windshield washer fluid reservoir holds ( 5.1 U.S. quarts , so 163.2 ounces )
It's exactly 1 gallon.
I think it is for indicating low wind shield washer fluid in the tank. I had it once in my Camry when there was no fluid. As soon as I filled the wind shield washer fluid, it went away.
On the fluid reserve tank under air filter.
It is probably the lo wash (low washer fluid) light.
You will need a compatible BMW scan tool to reset this service light from the I drive system.
I believe that the front and rear window fluid are in the same place
The cast of Jessica Sierra Superstar - 2007 includes: Jessica Sierra
On a 2007 Ford Explorer : The windshield washer fluid for the liftgate on the rear is supplied by the same reservoir as the front windshield ( that's located in the engine compartment )
GK Sierra was created in 2007.