2011 Acura RL Owner's Manual - Page 424

Collision Mitigation Braking SystemTM (CMBSTM) If equipped Overview The collision mitigation braking systemTM (CMBSTM) can assist the driver when there is a possibility of colliding with the vehicle in front of yours. It is designed to reduce the speed of your vehicle before an unavoidable collision occurs and, if possible, to alert you to a potential collision while there is time for the driver to prevent it. Here is a brief description of what the CMBS can do: When your speed is above 10 mph (15 km/h), the CMBS is monitoring the vehicle ahead of you with radar. When your vehicle is approaching the vehicle ahead of yours too quickly, the system may activate one or more of the following: a visual alert, an audible alert, apply the brakes and e-pretensioners to tighten the front seat belts first as a warning, then to prepare for an impending crash (see page 24 ). RADAR SENSOR BRAKE ACTUATOR SEAT BELT e-PRETENSIONERS The CMBS consists of a radar sensor in the front grille, a brake actuator in the engine compartment, an indicator on the instrument panel, seat belt e-pretensioners on the front seats, and an on/off button on the dashboard. 418