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Home >> Porsche >> 2019 >> 718 Boxster Base, Automatic DCT Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (37 Automatic Transmission - Actuator, Housing 2.5L -- 982 - BOXSTER/CAYMAN) >> SY, 3734N0 - Eliminating Transmission Symptoms - Reworking PDK Transmission (Repair Measures In The Event Of Various Symptoms/SY0213) >> Complaints Relating To Noises On The PDK Transmission >> Reworking PDK Transmission

Reworking PDK Transmission

WARNING: This page is about a different variant/trim than selected.

Information 

Information on PDK calibration and engine torque loss adaptation 

Using the PIWIS Tester (always use the latest test software)  , two different calibration processes can be carried out (PIWIS Tester > PDK control unit >> "Calibration" menu item):

Shift travel, hydraulics and clutches are calibrated during "Calibration after part replacement". 

Only shift travel and clutches are calibrated during "Calibration without previous part replacement". 

The following procedure applies in relation to calibration: 

Engine torque loss adaptation  must always be performed before  carrying out calibration (for details of procedure/conditions, see Step  7).

Essentially, calibration is required only after replacing parts  or if you are expressly  instructed to do so during troubleshooting.

A Calibration after part replacement  routine ("major calibration routine") must always be carried out after replacing one of the following components:

Calibration without previous part replacement  ("minor calibration routine") must be carried out if you are expressly instructed to do so (e.g. during troubleshooting in the event of complaints relating to comfort).

When control unit programming  is complete (DME/PDK - with or without part replacement), engine torque loss adaptation  must be performed.

If a control unit was only re-programmed (without replacing parts), calibration is not  required unless there are other faults present (e.g. problems relating to gearshift and drive-off quality) for which calibration is recommended in order to correct the faults.

If a complaint is received in relation to noises from the PDK transmission, complete the following steps initially:

  1. Create Vehicle Analysis Log (VAL) using the PIWIS Tester.
  2. Check to see if the noise is actually coming from the transmission.
  3. Check how comparable vehicles behave in identical situations.

    Information 

    If implausible test results are obtained (e.g. clutch fluid level too low and transmission oil level too high) and/or if fault memory entries are present in the PDK control unit, these faults must first be found and corrected as shown in the relevant flow chart.

  4. Check clutch fluid and transmission oil levels and correct them if necessary.

    > 370235 CHECKING AND TOPPING UP ATF (CLUTCH FLUID) 

    > 399035 CHECKING AND TOPPING UP OIL FOR FINAL DRIVE (WITH TRANSMISSION OIL)

  5. Program the most up-to-date data version of the PDK control unit (always use the latest test software). 
  6. Teach the throttle valve using the PIWIS Tester:

    Select PIWIS Tester > DME control unit >> Maintenance/repairs >>> "Adaptations" menu item >>>> "Throttle valve" function.

  7. Perform engine torque loss adaptation.

    Conditions/procedure for engine torque loss adaptation: 

    • Engine temperature is at least 80°C.
    • All loads switched off.
    • PDK selector lever in position P.
    • Leave engine running at idle speed for 3 minutes with air conditioning switched off.
    • Then allow engine to run at idle speed for 3 minutes with air conditioning switched on (high load).
    • Switch off ignition and wait 15 seconds (adaptation values are stored).

    If, after carrying out tests and/or correcting faults, the vehicle still has definite symptoms in relation to transmission noises, document the information specified below in PQIS: 

  8. Create a sound file  of the noise or (if possible) a video recording with sound, which also shows the rev counter and the gear indicator.
  9. Provide a detailed description  of the noise (e.g. rattling, grinding, whining, whistling, singing...)
  10. In which rev range  does the noise occur?
  11. In which gear  does the noise occur?
  12. At what speed  does the noise occur?
  13. In which load condition  does the noise occur (traction, overrun, part load, full load)?
  14. In which operating state  does the noise occur (cold, warm)?
  15. Exactly who  noticed the noise (customer, workshop)?
  16. What work  has already been done?

Contact the importer to find out what to do next.

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