VXDIAG Porsche Piwis 3 V37.250.020: Confirmed Working

Porsche PIWIS III V37.250.020 tips and guides for newbies:

Porsch Piwis 3 Software:

Piwis III V37.250.020 – confirmed to work no issues with Vxdiag Porsche

Diagnostic test: passed

Coding: passed

Programming: passed

Porsche Piwis 3 Overview:

Porsche Piwis 3 diagnostics, applications, tools and system.


VXDIAG Porsche Piwis 3 All Details:

– Porsche Piwis 3 diagnosis + car list

– Porsche Piwis 3 Engineering

– Porsche Piwis 3 wiring diagram

– Porsche Piwis 3 remote help

In detail…

Part 1: Porsche Piwis 3 Diagnostics:

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


Porsche Piwis III car list:

works with

all Porsche from 1998-2018:
Porsche 911(997) (991)
Boxster/Cayman (987)
Cayenne up to MY 2010
Cayenne from MY 2011

Especially the latest models:
Paramera (971) 2018
Caynenne (92A) 2018
Macan (95B) 2018
911 (991) 2018
and other old models

Take Panamera 971 (after 2017)

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Note: compared with Piwis 2, Piwis 3 combine the programming and coding menu in one menu.

Control units for diagnostic tests


Select “Gateway” and continue.

– Extended identifications


– Fault memory


– Data stream


– Coding and programming


– Maintenance repairs


Part 2:Piwis 3 Engineer software

Go to System for Diagnostics configuration for 991,981, 918, 970, Cayenne from MY11, Macan
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– Version information


– Mode options – E refers to Engineering


– Choose “E” for the engineering version

Note that, 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: Porsche Piwis III Wiring diagram

Go to Application to get Wiring diagram


Choose a model and read the wiring diagram.


For the model after the year 2017, you need Porsche PIWIS 3


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


Part 4: Porsche Piwis 3 Team viewer


Porsche piwis 3 tech support from cnautotool.com via Team Viewer

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