2888889 - E2021 BRAKE LIGHTS - Description (ESP)

Description

The brake lights are located at the rear in the side lights and in the central third brake light and consist of 10 separate bulbs.All three bulbs are operated whenever the brake pedal is pressed, by means of a switch on the pedal itself.The circuit is supplied with the ignition switched ON and is protected by a fuse, in the junction unit.
the switch fitted on the pedal assembly consists of two contacts which supply two signals: the first which is the 'N.A.' type recognizes the position of the brake pedal when it differs from the rest position; the second, which is the 'N.C.' type, recognizes the brake pedal in the rest position.
The information for the N.A. switch is used by the brake lights and is also sent to the ABS which recognizes this situation and implements a braking control as a result  See E7020  ABS . The information for the N.C. switch is only used by the ABS with ESP  See E7023  ESP .