The 2011 Volt is equipped with a rear seat belt reminder (RSBR) indicator that notifies the driver about the status of the rear seat belts. There may be some confusion about how long the indicator is illuminated in the instrument cluster.
For rear seating, occupancy is determined strictly based on the seat belt switches; occupant sensing mats are not used. Rear seat occupants are not detected until the seat belt is buckled. If rear seat occupants never buckle the seat belts, the system will not detect their presence. If the occupants do buckle the seat belts, the occupants are detected and each corresponding seat belt reminder indicator will illuminate green. The indicator has two sections to specify which seatbelts are buckled. If a seatbelt is unbuckled, the indicator will be red, and if the seatbelt is buckled, the indicator will be green.
The rear seat belt indicator is designed to stay on until the vehicle speed exceeds 6.5 mph (10 km/h) for 35 seconds whether the rear seat belts are buckled or unbuckled. If the vehicle is driven over 6.5 mph (10 km/h) before reaching 35 seconds and then stops again, the timer resets and the vehicle must be driven over 6.5 mph (10 km/h) until the 35 second timer is reached. Once a rear seat occupant is detected, the system will assume that occupant is present for the duration of the ignition cycle or until a rear door opens. If a rear door is opened or an ignition cycle occurs, the indicator will reset and assume there are no rear occupants until a buckle is latched again.
If a rear seat occupant unbuckles during the same ignition cycle and the vehicle speed exceeds 6.5 mph (10 km/h) for 35 seconds, the rear seat belt indicator will illuminate red in full screen mode and the rear seat belt reminder chime will sound. The chime will stop after three seconds, but the rear seat belt reminder indicator will remain illuminated until the occupant buckles or the ignition cycle ends. If the occupant rebuckles, the indicator will illuminate green and will not go out until the speed and time criteria is met again.