Symptom Related Diagnostic Procedures
WM 247025 Eliminating symptoms - Engine: Re-programming DME control unit (Vehicle driveability and engine noise/SY1810)
Tools
Technical values
General information
Symptom
Poor vehicle driveability and/or noises from engine.
Cause, date of introduction and remedial action
Cause
Low-quality fuel can cause increased combustion noise (rattling noises).
If the vehicle is filled alternately with fuel of different quality (high quality, low quality), this can briefly cause increased combustion noise. In order to respond to the changed conditions, the DME control unit re-adapts each time a different fuel quality is used.
Date of introduction/validity
Information
The remedial action described below only applies to model year A vehicles (2010) in the following markets:
- China (C33),
- Vietnam (C14),
- Singapore (C15) and
- Hong Kong (17).
For countries outside of the markets listed here, please contact the technical Porsche Hotline of the relevant Market Support before taking further action.
Different measures have been used in production as of model year B.
Remedial action
If a complaint is received in relation to a model year A vehicle, select M-number ‘738 Fuel region China' and re-program the DME control unit using the PIWIS Tester with test software version 7.200 (or higher) installed.
Information
Combustion noise is reduced in most cases by the automatic adaptation of the DME control unit while driving.
For successful adaptation, the vehicle must be driven constantly for a few seconds in the driving state (engine speed, gear selection, load range, etc.) in which increased combustion noise occurs.
=> Please also inform the customer about this issue:
Filling the vehicle with fuel of different quality requires an "adaptation phase" for the engine control system. As a result, increased combustion noise can occur briefly in certain driving states.
If the vehicle is filled alternately with fuel of different quality (high quality, low quality), this can briefly cause increased combustion noise. In order to respond to the changed conditions, the DME control unit re-adapts each time a different fuel quality is used.
Tools and materials
- PIWIS Tester II 9818 with test software version 7.200 (or higher) installed
- Battery charger HFL 65 WE 1353 (charging current of at least 40 A).
Re-programming DME control unit
NOTICE
Programming interrupted
- Malfunctions in control unit
- Risk of damage to control unit
-> Before starting work, connect a suitable battery charger with a current rating of at least => Nominal value: 40 A to the jump-start terminals in the engine compartment.
-> For vehicles with Porsche Entry & Drive, remove the control panel from the ignition lock and instead of the control panel insert the original vehicle key into the ignition lock. Keep the control panel in a safe place.
-> Switch on the ignition using the original vehicle key for the duration of the work, otherwise the ignition will be switched off automatically after 10 minutes and control unit programming will be interrupted.
1. Connect PIWIS Tester II with installed test software version 7.200 (or higher) to the vehicle and switch it on.
2. Switch on the ignition using the original vehicle key.
3. Call up the => Diagnostics' menu and select vehicle type => Panamera'. The diagnostic application starts.
4. Select Manual programming and M-number for fuel region China:
4.1. Select => DME' in the => Control unit overview' menu and confirm by pressing F12.
4.2. Press F12 (Yes') as required in response to the question "Create vehicle analysis log (VAL)?" in the display at the top.
4.3. Read the campaign information instructions and confirm by pressing F12.
4.4. Select the programming mode => Manual programming' in the => Programming' menu and confirm by pressing F12.
4.5. In the => Programming' menu, select the coding value => Country code' in the list, click on the "Value" field and select => C33 - China'.
4.6. Press F8 to save your selection.
4.7. The message "Modified values have been buffered" appears at the top of the display.
Press F12 to continue.
4.8. In the => Programming' menu, select the coding value => 738 Fuel region China' in the list and confirm your selection (by clicking) in the "installed" column (until a tick appears).
4.9. Press F8 to save your selection.
4.10. The message "Modified values have been buffered" appears at the top of the display.
Press F12 to continue.
4.11. In the => Programming' menu, select the family => Emissions concept' in the list, click on the "Value" field and select the number => 161 - Emissions concept EU 4 with EOBD'.
4.12. In the => Programming' menu, select the family => Sound insulation measures' in the list, click on the "Value" field and select the number => 172 - Acoustic package PAP, China, Korea'.
4.13. Press F8 to save your selection.
4.14. The message "Modified values have been buffered" appears at the top of the display.
Press F12 to continue.
4.15. Press F8 to write the values.
4.16. The message "Generation of vehicle data is complete." appears at the top of the display.
4.17. Press F8 to start programming:
The message "Programming." will appear at the top of the display.
Programming must not be interrupted.
As soon as programming is complete, the message "Programming has been completed successfully" will appear at the top of the display.
The progress bar at the bottom of the display shows 100% "Complete".
4.18. Conclude programming:
Press F12 to continue.
5. Check that programming was successful:
5.1. The following values must be entered in the => 'Extended identification' menu:
- Program/data status:
WS3820C348SCDAK9 or WS3820C348SCDK9 and
- Porsche part number:
97061856202 or 97061856902
=> If the values do not match, repeat Step 4.
6. Read and erase all fault memories.
If control units are found to have faults, which cannot be erased and are not caused by control unit programming, these faults must be located and corrected.
7. Switch off ignition.
8. Switch off the PIWIS Tester and disconnect it from the vehicle.
9. For vehicles with Porsche "Entry & Drive", replace the original vehicle key in the ignition lock with the control panel again.
End of remedial action.
Working time
24702500: Programming DME control unit; Labor time 80 TU
24702550: Programming DME control unit; Labor time 70 TU