See also:

3.5L V6 Ecoboost engine
...

Day and night brightness
The BLIS -CTA alert will automatically dim when the headlamp switch is in the parking, on, or autolamp position and night time darkness has been detected by the sun sensor. ...

Anti-scan feature
If the wrong code has been entered seven times (35 consecutive button presses), the keypad will go into an anti-scan mode. This mode disables the keypad for one minute and the keypad lamp will fla ...