PT4G Diagnostic Technical Information

TSTR 2606

Porsche Tester Software Update Information

USA Only

Software Version: 43.900.018

Vehicle Type:

All Porsche Vehicles

Subject:

This Porsche Tester IV software version is available online with immediate effect.

Information:

This software is only intended for use on Porsche Tester IV
(PT4G)

Note:

Regarding handling of the proprietary Porsche Tester IV software, we refer to Article- “Transfer
6
for use and
assigned of rights of use”- of the Porsche PT4G Purchase and License Agreement, in particular the ban on
duplicating the software or making itavailable to third parties.

Caution:

Download must not be interrupted!

Important:

During the entire update process, the Porsche Tester IV
must not be disconnected from the power supply
!
Installation of the software update via Online Update only.

Additional
Information:

PT4G testers can only be updated from the current software level.
PT4G testers cannot be backdated or targeted for a specific older software level.
If a software restore is to be performed, the tester will install the most current software release available.
When a new update is installed, only the objects that have been added/changed are installed to save time during
the update process.
The “Online Update”, “Fazit Access”, “PPN Access” and “VAL Data Return” functions can only be run if the network
settings and any proxy settings that are used were set correctly and if a valid PT4G device certificate was created
successfully for the Porsche Tester 4 being used for access. The user must have PPN access and must be allocated
to the device certificate.

AfterSales

February 12, 2026
Page 1 of 13

PT4G Diagnostic Technical Information

TSTR 2606

Porsche Tester Software Update Information

USA Only

Work
Procedure:

Software Version: 43.900.018

Installation of the software update via Online Update
The downloadprocess must be started by user once an online connection is available.
Select “Update”in the “Tools”menu to view the current update availabilitystatus. If an update is shown, select“Start
Download”. Installation of the releases must be started manually after the download has completed by pressing the
“Start installation”button. Prerequisite:PPN Porsche Tester License registration must have been carried out
success - fully.
1.
2.

Connect Porsche Tester IV to an external power supply and start it.
Start installationusing menu item “Tools- Update”then select “Start Installation”on the Porsche
Tester 4 user interface.

3.
4.

After successful installation,Porsche Tester IV will need to restart.
After the restart the update has now been completed.

AfterSales

February 12, 2026
Page 2 of 13

PT4G Diagnostic Technical Information

TSTR 2606

Porsche Tester Software Update Information

USA Only

Software Version: 43.900.018

Included in this software is the following updates
:

The Porsche Tester IVsoftware version 43.900.018 is available online with immediate effect.
It happened that the following function
s were not successful, this is now fixed.
•

Cayenne: Programming of the climate control unit for the Taiwan market.

In addition, other existing issueswith release 43.900.011 have been fixed

Integration test:

The following control units are automatically checked for the validity of software and hardware as part of the
vehicle network test.
In the event of deviations, a corresponding message is displayed on the diagnostic tester.
Explanation of the overview:
n.A.
This control unit is not part of the validity check
-

No new data available

Update available (minutes)

New data available. The expected programming time is given in brackets (minutes).

Important: New data is not necessarily available for all models.
If several control units are programmed on after the other, the programming times are summed up.

Control Unit

PanameraG2

Panamera G3

Cayenne

Sports Cars

Taycan

A/C

-

-

-

n.A.

-

Additional battery (48 V)

-

n.A.

-

n.A.

n.A.

Airbag (SC)

-

-

-

-

-

All- wheel electronics

n.A.

n.A.

-

-

n.A.

Assembly mounting

n.A.

-

-

n.A.

n.A.

Assistance systems

n.A.

-

-

-

-

Auxiliary heater (fuel)

-

-

n.A.

n.A.

n.A.

Battery sensor

-

-

-

-

-

AfterSales

February 12, 2026
Page 3 of 13

PT4G Diagnostic Technical Information

TSTR 2606

Porsche Tester Software Update Information

USA Only

Software Version: 43.900.018

Brake booster (eBKV)

-

-

-

-

-

Brake electronics (PSM)

-

-

-

-

-

Central computer (PCM)

n.A.

-

-

-

-

Central headlight

-

-

-

-

-

Chassis control (PASM)

-

-

-

-

ConBox
Control unit 2 for adaptive cruise
control
Control valve for air cushion on
driver's side

-

-

Update
available(22
minutes)

-

-

-

n.A.

n.A.

n.A.

n.A.

n.A.

-

n.A.

n.A.

-

Control valve for air cushion on
passenger's side

n.A.

-

n.A.

n.A.

-

Diff. lock

-

-

-

n.A.

-

Display and operator control unit in
rear center console

-

-

-

-

-

Display and operator control unit in
front center console

-

-

-

-

n.A.

Distance sensor (ACC)

-

-

-

-

-

Door on driver's side, front

-

-

-

-

-

Door on driver's side, rear

-

-

-

n.A.

-

Door on passenger's side, front

-

-

-

-

-

Door on passenger's side, rear

-

-

-

n.A.

-

Electric A/C compressor