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Home >> Porsche >> 2021 >> 718 Boxster S, Automatic DCT Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 27 (45 Control System 2.0L -- 982 - BOXSTER/CAYMAN) >> WM, 453019 Removing And Installing Hydraulic Unit >> Subsequent Work

Subsequent Work

WARNING: This page is about a different variant/trim than selected.
  1. Bleed the brake system.

    > 470107 BLEEDING THE BRAKE SYSTEM

  2. Only when replacing the hydraulic unit:  Code the hydraulic unit and calibrate the rotation-rate sensor.
    1. 2.1  Code the hydraulic unit using > 9818 - PIWIS Tester II  .
      1. 2.1.1  Call up the > Maintenance/repairs  menu.
      2. 2.1.2  Call up the > Codings/adaptations  submenu.
      3. 2.1.3  Select Automatic coding with coding rules >>.

        Information 

        The country coding must be strictly observed.

      4. 2.1.4  Press Next to start the coding process.

        Information 

        If the hydraulic unit is replaced, the PSM control unit must be calibrated using > 9818 - PIWIS Tester II  (calibration of hydraulic unit/control unit with combination sensor). If calibration is not performed, the PSM control unit will have no values or incorrect values.

    2. 2.2  Calibrate the rotation-rate sensor (combination sensor) using > 9818 - PIWIS Tester II  .
      1. 2.2.1  Call up the > Maintenance/repairs  menu.
      2. 2.2.2  Call up the > Sensor cluster calibration (combination sensor)  submenu.
      3. 2.2.3  Follow the other menu prompts for calibrating the rotation-rate sensor (combination sensor).
  3. Carry out Hydraulic swap test using > 9818 - PIWIS Tester II  .
    1. 3.1  Call up the > Control unit overview  menu.
    2. 3.2  Call up the > PSM  submenu.
    3. 3.3  Call up the > Maintenance/repairs  submenu.
    4. 3.4  Call up the > Hydraulic swap test  submenu.
    5. 3.5  Follow the other menu prompts for carrying out the hydraulic swap test.
  4. Install alarm siren.

    > 966519 REMOVING AND INSTALLING ALARM SIREN

  5. Install front section of front wheel housing liner at the left.

    > 505619 REMOVING AND INSTALLING FRONT WHEEL HOUSING LINER

  6. Carry out a function test on the brake system.
    1. 6.1  Brake at least once in the ABS control range while test-driving the vehicle on a horizontal road surface.

      Drive according to road conditions.

      Information 

      The HOLD function is not active for inclines greater than 5% if the rotation-rate sensor (combination sensor) was not calibrated or was calibrated incorrectly

    2. 6.2 On vehicles with PDK transmission:  Also check the HOLD function.
    3. 6.3  Read out the fault memory using > 9818 - PIWIS Tester II  .
    4. 6.4  Correct any faults that were read out using > 9818 - PIWIS Tester II  .
    5. 6.5  Repeat Steps 7.1. to 7.4. until all faults are corrected.
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