Anyone with the Navigation Radio in the XK...

You can use steering wheel controls to operate the Navigation System, just like the Navigation radio in the Grand Cherokee.

You can switch the Navigation controls from the radio buttons to the steering wheel by holdiing down the Center button on the right side of the steering wheel, then while holding the button down... press and release the center button on the left side of the steering wheel.

Then if you look at the display on the monitor you will see a steering wheel icon on the lower right of the display (next to the clock). During the time the steering wheel icon is displayed control of the Navigation is switched to the steering wheel.

To switch control back to the radio buttons, just hold the center button on the right side of the steering wheel and press and release the center button on the left side of the steering wheel and the steering wheel icon is no longer visible.