Work Procedure 5

5 Procedure in the event of noises on the PDK transmission.

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

5.1 Create and save the Vehicle Analysis Log (VAL) using the PIWIS Tester.

5.2 Find and correct any faults that are present in other control units (DME, PSM, air conditioning, etc.).

5.3 Check to see if the noise is actually coming from the transmission.

Also check other possible noise sources, such as:

^ Engine (e.g. adjacent damping parts)

^ Rear-axle differential

^ Wheels, wheel bearings

^ Cardan shaft bearing

^ Power-steering pump

5.4 Check the oil level in the PDK transmission and correct it if necessary --> 370235 Checking and topping up ATF.

5.5 If the data version of the PDK control unit is not up-to-date, re-program the PDK control unit. To do this, select "Programming" > "Automatic programming" in the PDK control unit using the PIWIS Tester and confirm with [>>].

The name of the control unit to be programmed (in this case: PDK) as well as the data record to be programmed and the Porsche part number and status will be displayed. If "not current" is displayed in the status display, re-program the PDK control unit. If the data record is already up-to-date ("current" in the status display), there is no need to program the PDK control unit.

5.6 Teach the throttle valve using the PIWIS Tester:

Select PIWIS Tester II > DME control unit >> "Maintenance/repairs" menu >>> menu item "Adaptations" >>>> "Throttle valve adaptation" function. Follow the instructions on the PIWIS Tester.

5.7 Perform engine torque loss adaptation.

Conditions/procedure for engine torque loss adaptation:

^ Engine temperature is at least 176°F. (80°C.) (read out the temperature from the PDK control unit by selecting "Actual values/input signals" > "CAN input signals - Engine temperature").

^ All loads switched off.

^ PDK selector lever in position P.

^ Allow engine to run 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.

^ Switch off ignition and wait 15 seconds (adaptation values are stored).

5.8 Perform a test drive.

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

^ Create and save a sound file of the noise

^ Provide a detailed description of the noise (e.g. rattling, grinding, whining, whistling, singing,)

^ In which rpm range does the noise occur?

^ In which drive and shift program does the noise occur (D, M, Sport, Sport Plus)?

^ In which gear does the noise occur?

^ At what speed does the noise occur?

^ In which load condition does the noise occur (acceleration, deceleration, partial load, full load)?

^ In which operating state does the noise occur (cold, warm)?

^ Who noticed the noise (customer, workshop)?

^ What work has already been done?

^ How do comparable vehicles behave?

Contact Porsche to find out what to do next.