How to use VXDIAG VCX-DoIP Porsche Piwis III V37.250.020?

VXDIAG VCX-DoIP Porsche Piwis III V37.250.020 is available with engineering version and supports newest Porsche models after 2017 years. Piwis III is compatible with Piwis II.


Let’s use VXDIAG VCX-DoIP Porsche Piwis III V37.250.020 to diagnose Panamera 971 (after 2017).


Here Porsche Piwis III V37.250.020 function menu:

Incl. diagnostics, applications, tools and system.



Part 1: Dignostics

Here I connect to the ECU, so I select “Manual model line selection”.



Porsche Piwis III works with Porsche 911, Boxster, Cayman, Cayenne, Panamera (971 & 970), Macan, 918 Spyder etc.

Select Panamera 971 (after 2017)

vxdiag-vcx-doip-porsche-piwis-iii-v37-250-020-02 vxdiag-vcx-doip-porsche-piwis-iii-v37-250-020-04 vxdiag-vcx-doip-porsche-piwis-iii-v37-250-020-05

PS: Actually, comparing with Piwis II, Piwis III combine the programming and coding menu in one menu.


Select Control unit.


Select “Gateway” and continue.

1) Extended identifications



2) Fault memory



3) Data stream



4). Coding and programming.


5). Maintenance repairs



Part 2: with Engineer software.

Click on “System”, then ” Diagnostics configuration for 991,981, 918, 970, Cayenne from MY11, Macan”

vxdiag-vcx-doip-porsche-piwis-iii-v37-250-020-12 vxdiag-vcx-doip-porsche-piwis-iii-v37-250-020-12

1) Version information



2) Mode option



3) Choose “E” for the engineering version.

After you change the mode to “E” and want to enter to change to other mode you will be disallowed, you need to restart the software. This is another difference between the PIWIS tester III and II. The developer claims to make a normal mode and develop mode for switch as free as you like.



Part 3: Wiring diagram

Click on “Applications” then “Wiring diagram”.



Choose the Porsche model that you want to know the wiring diagram.



For the Model after 2017, you need Porsche PIWIS Tester III



You can use the mouse to move the wiring diagram as you like.



Part 3: Team viewer



Porsche Piwis III V37.250.020 FAQ:

Q: Can Porsche Piwis III V37.250.020 perform all the functions of Porsche Piwis II?

A: Yes, Porsche Piwis III is compatible Porsche Piwis II, that means III includes all the functions of Piwis II.


Q: Can Piwis II update to Porsche Piwis III V37.250.020?

A: No, they have the different hardware, the Piwis III has the higher demand to the computer resolution.


Q: How to update Piwis III V37.250.020?

A: The package comes with Lenovo T440P computer, 240G Solid Hard Disk, Authorization etc. If you want to update, you need to ship back the computer to the dealer, usually the software updates 1-2 times per year.


Q: Can I use my personal computer?

A: No, the computer and the device is bound together. Because The Piwis III V37.250.020 is bound with the encrypted chip. If you unplug the hard disk and insert into the other computer, then the software will has no nonsense.


Q: Why need Piwis III V37.250.020?

A: Because Piwis II can’t work with the Porsche after 2017 year. Only Piwis III V37.250.020 can .


Q: It program IMMO & Key online?

A: Yes.


Q: Does it support Wifi?

A: Usually, the device is offline version and WIFI is disabled so that you don’t need to active every 15 days.

If you have the online account and want to use our Vxdiag Piwis III, then we can enable the Wifi and you will active the software every 15 days.



Q: Can Piwis III connect to the internet?

A: Yes. It is allowed.