Yes your instrument panel dimmer control has a "Click". Maybe it just takes a lot of force to get it to click.
I found the Ford Owners manual ON-Line website. Click HERE.
In the 2010 manual on page 51, it states as follows.
PANEL DIMMER CONTROL
Use to adjust the brightness of the
instrument panel and all applicable
illuminated switches in the vehicle
during headlamp and parklamp
Move the control to the full upright
position, past detent, to turn on theINTERIOR LAMPS
Note: If the battery is disconnected,
discharged, or a new battery is
installed, the dimmer switch requires re-calibration. Rotate the dimmer
switch from the full dim position to the full dome/on position to reset.
This will ensure that your displays are visible under all lighting
The dome lamp will not illuminate if the control switch is not rotated
past the detent.