Procedure 4
Procedure: 44 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:
4.1 Create and save the Vehicle Analysis Log (VAL) using the PIWIS Tester.
4.2 Check to see if the noise is actually coming from the transmission.
4.3 Check how comparable vehicles behave in identical situations.
4.4 Check oil levels (clutch fluid and transmission oil level) and correct them if necessary --> 370235 Checking and topping up ATF (clutch fluid) and --> 399035 Checking and topping up oil for final drive (with transmission oil).
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.
4.5 Read out the data status of the PDK control unit (PIWIS Tester > PDK control unit >> menu item "Identification").
- If the PDK data status is < "T082" --> Re-program the DME and PDK control unit using the PIWIS Tester II and software versions 5.200 (or higher). Then continue with Step 4.6.
- If the PDK data status is >= "T082" --> Continue with Step 4.6.
4.6 Teach the throttle valve using the PIWIS Tester:
Select PIWIS Tester > DME control unit >> menu item "System adaptation" >>> "Throttle valve adaptation" function.
4.7 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.
^ 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 (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, please document the information specified below in PQIS:
^ 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.
^ Provide a detailed description of the noise (e.g. rattling, grinding, whining, whistling, singing,)
^ In which rev range does the noise occur?
^ In which gear does the noise occur?
^ At what speed does the noise occur?
^ In which load condition does the noise occur (traction, overrun, part load, full load)?
^ In which operating state does the noise occur (cold, warm)?
^ Exactly who noticed the noise (customer, workshop)?
^ What work has already been done?
Contact your importer to find out what to do next.