Acura 2007 RL Owner's Manual page 366

Collision Mitigation Brake System (CMBS)
CMBS Indicator
CMBS INDICATOR
This indicator comes on for several
seconds when you turn the ignition
switch to the ON (II) position. It also
comes on and stays on when you
turn the CMBS off by pressing the
CMBS OFF switch.
To turn the CMBS back on, make
sure the vehicle is stopped and the
ignition switch is in the ON (II)
position, then press the CMBS OFF
switch for about 1 second.
360
The CMBS indicator normally comes
on under these conditions:
When you manually turn off the
system.
When the system shuts off
automatically.
When you drive in bad weather
(rain, snow, fog, etc.).
If anything covers the front grille
(dirt, mud, dry leaves, wet snow,
etc.).
When the VSA system indicator
comes on (see page 371 ).
When you turn the ignition switch
to the ON (II) position, the CMBS
indicator should come on for a few
seconds, then go off. If the
indicator comes on at any other
time and a CHECK CMBS
SYSTEM message appears on the
multi-information display, there is
a problem with the CMBS. You
can still drive your vehicle, but
CMBS will not be operating. Have
your vehicle checked by a dealer.