WARNING: This page is about a different car, the 2008 Infiniti M45 and 2008 Infiniti M35. However, it is still accessible from the selected car via links, so may be relevant.
PARKING BRAKE CONTROL SERVICE DATA
Control type
Foot pedal
Number of notches [under force of 196 N (20 kg, 44 lb)]
3 - 4 notches
Number of notches when parking brake warning lamp comes on