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Home >> Audi >> 2016 >> S5 Prestige, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 658 (Brake System - Mechanical Components) >> 46 Mechanical Components >> Parking Brake >> Overview - Parking Brake

Overview - Parking Brake

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Fig 1: Identifying Electro-Mechanical Parking Brake Control Module
GWWA46-10128Courtesy of AUDI OF AMERICA, LLC
  1. Electromechanical Parking Brake Button -E538-

    The switch is always illuminated so it can be found in the dark.

  2. LED (Light Emitting Diode)
    • Installed location: in the parking brake contact switch
    • lights up when the parking brake is engaged
    • Also indicated by the function light in the instrument cluster

      The bars in the switch turn red during dynamic deceleration greater than 7 km/h. A audible warning signal also sounds.

  3. EPB System Malfunction Indicator (Yellow)
    • If the parking brake malfunctions, a yellow symbol and the indicator Parking brake! appears in the instrument cluster display.
  4. Electromechanical Parking Brake Function Lights

    The lamp is red

    • Clamping force display
    • Indicator light comes on when parking brake is closed and ignition is on.
    • After switching off ignition, indicator light stays on for about 20 seconds.
    • If the parking brake is closed with ignition off, the indicator light comes on for about 20 seconds.
    • The indicator light must go out when the parking brake is released.

      The lamp blinks red

      If the indicator lamp blinks red continuously after engaging the parking brake, it may be due to the following:

      • the braking force from the parking brake is not sufficient to prevent the vehicle from rolling.
      • the brake temperature is too high.

      If the indicator lamp is blinking red, another method must be used to prevent the vehicle from rolling.

      The lamp is green

    • Function light with Audi Hold Assist activated

      Additional yellow lamp

    • If the parking brake malfunctions, a yellow symbol and the indicator Parking brake! appears in the instrument cluster display.
  5. Right Parking Brake Motor -V283-
  6. 6 -

    Electromechanical Parking Brake Control Module - J540-

  7. 7 -

    Left Parking Brake Motor -V282-

  8. 8 -

    Acoustic Signal

    • Warning if it is operated while driving greater than 7 km/h (4 mph).
    • Warning when a malfunction is detected in the system.