PT4G Diagnostic Technical Information

TSTR 2609.1

Procedures for Missing Diagnostic Equipment

USA Only

Revision:

This bulletin replaces bulletin TSTR2609, dated February 23, 2026.

Vehicle Type:

All Porsche Vehicles

Subject:

Procedures in the event of a missing diagnostic tester or other diagnostic equipment

Information:

PCNA has identified the need onhow to proceed in the event that a diagnostic tester or its accessories have gone
missing. Diagnostic testers are critical devices that can impact vehicle safety systems and onboard cybersecurity.
They contain information requiring special protection, including in particular:
• Sensitive diagnostic data
• Vehicle and identification information
• Access ‑protected diagnostic software
• Manufacturer‑specific programs and configurations
The loss of such a device – whether through misplacement, accidental omission, or potential theft
– represents a
relevant security risk. To ensure the continuous protection of our systems, data, and customer vehicles, a clearly
structured reporting and escalation process must be strictly followed.

AfterSales

February 26, 2026
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PT4G Diagnostic Technical Information

TSTR 2609.1

Procedures for Missing Diagnostic Equipment

USA Only

Procedures:

The following procedures should be followed in the event of a missing diagnostic tester:
1. Immediate notification by the Porsche Cent
er
As soon as it is determined that a diagnostic tester, VCI, or measurement equipment is missing, the Porsche
Center must immediately inform the responsible importer. Timely reporting is crucial to minimize risks to data,
software, and infrastructure.
2. Assessment, blocking of the diagnostic tester, and forwarding by the importer
The importer receives the report, documents the incident, and forwards all relevant information to Porsche AG.
This includes, among other things:
• device type and serial number
• time and place of the loss
• last known usage (if possible)
• measures already taken on site
The importer deactivates the affected diagnostic tester in the Porsche License Administration to prevent potential
misuse and erroneous billing.
3. Implementation of technical security measures by PAG
Upon receipt of the notification, PAG initiates the necessary technical actions, including:
• documentation in our systems
• permanent blocking of the device in the central backend (if required)
These measures ensure that sensitive systems or vehicle information cannot be misused.

Important:

Diagnostic testers are not merely work tools, but central interfaces to highly sensitive vehicle functions.
Unauthorized access could:
• manipulate diagnostic processes
• retrieve safety- relevant vehicle data
• alter or misuse software versions
Strict and timely adherence to thereporting pathway Porsche Center → Importer → PAG
ensures that risks are
immediately identified and protective measures are implemented without delay.

AfterSales

February 26, 2026
Page 2 of 3

PT4G Diagnostic Technical Information

TSTR 2609.1

Procedures for Missing Diagnostic Equipment

USA Only

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

February 26, 2026
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