This lights up when the ignition is switched on, then, if the driver's or front passenger's (if this seat is occupied) seat belt is not fastened and the vehicle has reached approximately 12.4 mph (20 km/h), it flashes and a beep sounds for around 2 minutes.
Note: an object placed on the passenger seat base can activate the warning light.
Rear seat belt reminder (depending on vehicle)
Warning light ß comes on, accompanied (depending on the vehicle) by a message indicating the number of fastened seat belts on the instrument panel for approximately 30 seconds, each time the vehicle is started, a door is opened or a rear seat belt is fastened/unfastened. Check that the rear passengers are wearing seat belts and that the number of seat belts shown as fastened corresponds to the number of rear seat places occupied.