How to Reset Porsche Piwis3 Operating Mode E (Engineering)?

3 steps to reset Porsche piwis3 software to operating mode E (Engineering), so that the engineer can perform advanced job including programming, power upgrade, retrofit etc.


On the home menu of Porsche piwis3 software, choose “System”.



Choose “Diagnostics configuration for 991, 981, 918, 970 Cayenne from MY11, Macan”.



This is PIDT checking application, there are options: version information, Mode, logging, view design, paths, miscellaneous.



Click on “Mode”, then “Operating mode”, there are options: E, P, V. Please choose “E”, then click on “Save” at the bottom line.

piwis-tester3-engineering-mode-04 piwis-tester3-engineering-mode-05


Now Porsche piwis3 tester is reset to Engineering mode.


The explanation of operating mode E, P, V:

V mode: Standard After-sales Mode for Piwis 3 common diagnostics
E mode: Development Mode for Piwis III engineering software functions
P mode: Production for supplier data information (Customers don’t need to work on P mode)


Watch video:



piwis3 Engineering mode vs. Standard mode

Features Piwis3 Standard Mode Piwis 3 Engineering Mode
Actual value
Active test
Data stream
Irregular ×
Manually programming ×
Automatically programming
Random programming ×
Upgrade power Need PPN code No need PPN code
Change VO code Some require the PPN code No need PPN code
Open and close the start/stop function
Flash hide function ×
Unlock Airbag ×
Clear the airbag crash data ×
Change VIN code Some yes
Manually flash the code ×


Specific functions of the Porsche engineer system:
1. Porsche Bluetooth activation by engineers, AUX engineer activation, etc.
2. Original sports valve switch modification
3 Stopwatch color change
4. LED headlight activation
5. PCM host low configuration upgrade to high configuration
6. Original reversing color picture installation
7. Replacement of used car parts
8 Replacement of Used PCM Host
9. Clear the airbag crash data
10. Display the instrument horsepower and torque
11. Online programming and firmware update, manual programming, automatic programming, irregular programming
12. Long-term sports performance of Porsche, retrofit of tire pressure TPM system, modification of panoramic camera


List of features that piwis3 Engineering mode can perform:
1.The power system of some models is updated. Compass and wave plate modification
2, Porsche PSE Retrofit
3, Porsche eject function activation
4, Porsche start-stop function close and open
5, Porsche airbag unlock, clear the crash data
6, Change the second-hand accessories, coding, parameters change
7, 981 \ 991 G value graph display, sports performance graph display, shift graph display
8 Porsche engineers computer programming, coding, write directly after parameter change
9 Porsche check engine light on off, seat belt warning light off, etc.
10 Porsche rear wing adjustment, active cruise control modification
11, Under normal circumstance, the Porsche Cayman old airbag ECU requires to change one new airbag after unlock, with the piwis3 engineering mode, you can directly unlock the old airbag without replacing a new one.

12.Irregular coding, regular coding, manually coding, automatically coding; change content is irregular coding, change model display.


Source of Porsche Piwis III with engineering mode: