n.A.

n.A.

-

-

-

n.A.

n.A.

-

n.A.

n.A.

-

High-voltage central box (JX6 )

-

-

-

High-voltage battery (J1120 )

-

-

-

Front air- conditioning control (E87 )

-

-

-

Display instrument cluster (J285 )

-

-

-

Main control unit body electronics
HCP4 (J519) - thermal
management
Main control unit body electronics
HCP4 (J519) - front- end
electronics

Rear high-voltage pulse inverter
(JX1) [Base]
Rear high-voltage pulse inverter
(JX1) [Turbo]
Front high-voltage pulse inverter
(JX4 )
Front high-voltage pulse inverter
(JX4) [Base]
Front high-voltage pulse inverter
(JX4) [Turbo]

AfterSales

March 23, 2026
Page 10 of 14

PT4G Diagnostic Technical Information

TSTR 2617

Porsche Tester Software Update Information

USA Only

External communication(J949)
(China)
External communication(J949)
(RoW)

Software Version: 44.000.020

-

-

-

-

-

-

Communication light front
passenger side dashboard(L385 )

-

-

-

Communication light front left door
(L383 )

-

-

-

Communication light for front right
door (L384 )

-

-

-

Compressor (J1075 )

-

-

-

-

-

-

-

-

-

-

-

-

Loudspeaker amplifier(R184 )

-

-

-

Power distributor(J1282 )

-

-

-

Steering wheel electronics (J527 )

-

-

-

Multifunction(J453 )

-

-

-

Panoramic roof (J245 )

-

-

-

Rear differentiallock (GQS) (J647 )

-

-

-

Tire pressure monitoring(J502 )

-

-

-

Rear view camera (J772 )

-

-

-

Power steering (J500 )

-

-

-

Front seat adjustment on passenger
side (J1112, J1111 )

-

-

-

Front seat adjustment on driver’s
side (J1111, J1112 )

-

-

-

Inductive charger for mobile
devices (J1146 )
Charging communication1
(J1245 )
Charging communication2
(J1246 )

AfterSales

March 23, 2026
Page 11 of 14

PT4G Diagnostic Technical Information

TSTR 2617

Porsche Tester Software Update Information

USA Only

Software Version: 44.000.020

Rear driver’sside door (J388 )

-

-

-

Rear passenger side door (J389 )

-

-

-

Front passenger side door (J387 )

-

-

-

Front driver’sside door (J386 )

-

-

-

SurroundView camera (J928 )

-

-

-

Gear selector (E313 )

-

-

-

Left auxiliary headlight (J1018 )

-

-

n.A.

Right auxiliary headlight (J1023 )

-

-

-

AfterSales

March 23, 2026
Page 12 of 14

PT4G Diagnostic Technical Information

TSTR 2617

Porsche Tester Software Update Information

USA Only

Release
History:

Software Version: 44.000.020

Porsche Tester IV Online Update

Release

Date

44.000.0 20

3/ 23 /2026

44.000.015

3/18/2026

44.000.010

3/16/2026

44.000.005

3/12/2026

44.000.000

3/9/2026

43.900.040

3/2/2026

43.900.030

2/23/2026

43.900.025

2/19/2026

43.900.020

2/16/2026

43.900.018

2/12/2026

43.900.011

2/10/2026

43.900.010

2/10/2026

43.900.005

2/10/2026

43.900.000

2/10/2026

43.800.026

1/12/2026

43.800.024

12/19/2025

43.800.022

12/17/2025

43.800.020

12/17/2025

43.800.010

12/8/2025

43.800.000

12/2/2025

43.700.055

12/2/2025

43.700.050

11/24/2025

43.700.040

11/17/2025

43.700.035

11/17/2025

43.700.031

11/10/2025

43.700.030

11/10/2025

43.700.027

11/6/2025

43.700.021

11/3/2025

43.700.020

11/3/2025

43.700.018

11/3/2025

43.700.015

10/30/2025

43.700.011

10/27/2025

43.700.010

10/27/2025

AfterSales

March 23, 2026
Page 13 of 14

PT4G Diagnostic Technical Information

TSTR 2617

Porsche Tester Software Update Information

USA Only

Software Version: 44.000.020

Porsche Tester IV (PT4G)
PT4G Tester New
Model Line

All Porsche Vehicles

Use

Vehicle Diagnostics

Workshop Manual

Multiple

Supplier

PCNA

Availability

Orderable

Note

The PT4G is orderable through the Special Tools Webstore

Ordering Process:
Special Tools / Testers Website:
https://porsche- cars- north- america.pointofrentalcloud.com/portal
To increase security and show prices that may be below the Minimum Advertised Price, Login is required to see/access the
storefront. Your Porsche Center will have a NEW single Username and Password for the Porsche Special Tools site.
To streamline the new process, we are using the existing Rental Website for
Rental and SALE of all Special Tools and PT4G.

Support:
Special Tool:
Open a PRMS ticket. Technical Support >> Special Tools
Diagnostic Equipment:
Open a PRMS ticket. Technical Support >> Tester Support

Important Notice:
Technical Bulletins issued by Porsche Cars North America, Inc. are intended only for use by professional automotive technicia
ns who have attended Porsche service training courses. They are written to
inform those technicians of conditions that may occur onsome Porsche vehicles, or to provide information that could assist in the proper servicing of a vehicle. Porsche special stool
may be necessary in order
to perform certain operations identified in these bulletins. Use of tools and procedures other thanose
th Porsche recommends in these bulletins may be detrimental to the safe operation of your vehicle, and
may endanger the people working on it. Properly trained Porsche technicians have the equipment, tools, safety instructions,
nd knowa
how to do the job properly and safely. Part numbers listed in these
bulletins are for reference only. The work procedures updated electronically in the Porsche diagnostic and testing deviceetak
precedence and, in the event of a discrepancy, the work procedures in the
Porsche Tester are the ones that must be followed.

©2026 Porsche Cars North America, Inc.

AfterSales

March 23, 2026
Page 14 of 14