PT4G Diagnostic Technical Information

TSTR 2601

Porsche Tester Software Update Information

USA Only

Software Version: 43.800.026

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 6 - “Transfer 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 it available 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

January 13, 2026
Page 1 of 13

PT4G Diagnostic Technical Information

TSTR 2601

Porsche Tester Software Update Information

USA Only

Work
Procedure:

Software Version: 43.800.026

Installation of the software update via Online Update
The download process must be started by user once an online connection is available.
Select “Update” in the “Tools” menu to view the current update availability status. 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.
3.
4.

Connect Porsche Tester IV to an external power supply and start it.
Start installation using menu item “Tools - Update” then select “Start Installation” on the Porsche
Tester 4 user interface.
After successful installation, Porsche Tester IV will need to restart.
After the restart the update has now been completed.

AfterSales

January 13, 2026
Page 2 of 13

PT4G Diagnostic Technical Information

TSTR 2601

Porsche Tester Software Update Information

USA Only

Software Version: 43.800.026

Included in this software is the following updates:
•

Macan H2 (Electric): the function in Main control unit for body electronics HCP4 (J519) - Thermomanagement [013]
"Replacing electric air-conditioning compressor (VX81)" was not successful, this has been fixed.

•

Panamera G3 and Cayenne E3: the function in DME - Maintenance/Repair "Reset injector learning values" was not successful.
From now on you can also find it under DME - Short tests "Reset injector learning values".

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
A/C

Panamera G2
-

Panamera G3
-

Cayenne
-

Sports Cars
n.A.

Taycan
-

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

-

-

-

-

-

Brake booster (eBKV)

-

-

-

-

-

AfterSales

January 13, 2026
Page 3 of 13

PT4G Diagnostic Technical Information

TSTR 2601

Porsche Tester Software Update Information

USA Only

Software Version: 43.800.026

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
Control valve for air cushion
on passenger's side
Diff. lock

-

n.A.

n.A.

n.A.

n.A.

n.A.

-

n.A.

n.A.

-

n.A.

-

n.A.

n.A.

-

-

-

-

n.A.

-

Display and operator control
unit in rear center console
Display and operator control
unit in front center console
Distance sensor (ACC)

-

-

-

-

-

-

-

-

-

n.A.

-

-

-

-

-

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

-

-

-

n.A.

-

Electric exhaust turbocharger

n.A.

n.A.

n.A.

-

n.A.

Electric exhaust turbocharger
2
Electric interior heater (HVPTC)
Engine electronics (DME)

n.A.

n.A.

n.A.

-

n.A.

n.A.

-

n.A.

n.A.

-

-

-

-

-

-

AfterSales

January 13, 2026
Page 4 of 13

PT4G Diagnostic Technical Information

TSTR 2601

Porsche Tester Software Update Information

USA Only

Exterior acoustics (eSound)

Software Version: 43.800.026

-

-

-

n.A.

-

Front corner radar sensor, left

n.A.

-

-

n.A.

-

Front corner radar sensor,
right
Front-end electronics (BCM1)

n.A.

-

-

n.A.

-

-

-

-

-

-

Front axle lift system

n.A.

n.A.

n.A.

-

n.A.

Front roof console

n.A.

-

-

-

-