TSTR2603 Service Bulletin/Repair Instructions

Brake electronics (J104)
-
Charging communication 1 (J1245)
-
Charging communication 1 (J1245)
-
Charging communication 2 (J1246)
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Communication light for front right door (L384)
-
Communication light front left door (L383)
-
Communication light front passenger side dashboard

(L385)

Compressor (J1075)
-
Display instrument cluster (J285)
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Distance measurement sensor for medium-range

radar (J850)

External communication (J949) (RoW)
-
External communication (J949) (China)
-
AfterSales
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January 19, 2026

Page 8 of 13
PT4G Diagnostic Technical Information
TSTR 2603
Porsche Tester Software Update Information
USA Only
Software Version: 43.800.030
Front air-conditioning control (E87)
-
Front camera (R242)
-
Front driver’s side door (J386)
-
Front high-voltage pulse inverter (JX4)
-
Front left anti-theft antenna (J1192)
-
Front left corner radar (J1088)
-
Front passenger side door (J387)
-
Front PCM display and operator control panel (R238)
-
Front right anti-theft antenna (J1193)
-
Front right corner radar (J1089)
-
Front seat adjustment on driver’s side (J1111, J1112)
-
Front seat adjustment on passenger side (J1112,

J1111)

Function monitoring (J526)
-
Gear selector (E313)
-
Head-up display (J898)
-
High-voltage battery (J1120)
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High-voltage central box (JX6)
-
Inductive charger for mobile devices (J1146)
-
Left auxiliary headlight (J1018)
-
Left main headlight (A31)
-
Left rear radar (J769)
-
Long-range radar distance measurement sensor

(J428)
-
AfterSales
-
January 19, 2026

Page 9 of 13
PT4G Diagnostic Technical Information
TSTR 2603
Porsche Tester Software Update Information
USA Only
Software Version: 43.800.030
Loudspeaker ampliﬁer (R184)
-
Main control unit for drive and chassis (HCP1)

(J1312)

Main control unit body electronics HCP4 (J519) front car electronics

Main control unit for body electronics HCP4 (J519) A/C and spoiler

Main control unit for body electronics HCP4 (J519) thermal management

Main control unit for driver assistance HCP2 (J1274)
-
Main control unit for gateway HCP5 (J1273)
-
Main control unit for gateway HCP5 (J1273) diagnostic tester (vehicle)

Main HCP3 Infotainment control unit (J794) Android

Main HCP3 Infotainment control unit (J794) Infotainment

Main HCP3 Infotainment control unit (J794) - sound
-
Main Infotainment HCP3 control unit (J794)
-
Multifunction (J453)
-
Panoramic roof (J245)
-
Passenger’s side front display and control panel

(J145)

Power distributor (J1282)
-
Power steering (J500)
-
Rear axle steering (J1019)
-
Rear diﬀerential lock (GQS) (J647)
-
Rear driver’s side door (J388)
-
Rear high-voltage pulse inverter (JX1)
-
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January 19, 2026

Page 10 of 13
PT4G Diagnostic Technical Information
TSTR 2603
Porsche Tester Software Update Information
USA Only
Software Version: 43.800.030
Rear high-voltage pulse inverter (JX1)
-
Rear left anti-theft antenna (J1194)
-
Rear passenger side door (J389)
-
Rear right anti-theft antenna (J1195)
-
Rear right radar (J770)
-
Rear view camera (J772)
-
Rear-end electronics (J393)
-
Right auxiliary headlight (J1023)
-
Right main headlight (A27)
-
Steering wheel electronics (J527)
-
Surround View camera (J928)
-
Tire pressure monitoring (J502)
-
Trailer hitch (J345)
-
AfterSales
January 19, 2026

Page 11 of 13
PT4G Diagnostic Technical Information
TSTR 2603
Porsche Tester Software Update Information
USA Only
Release

History:
Software Version: 43.800.030
Porsche Tester IV Online Update
Release
Date
43.600.070
9/29/2025
43.600.080
10/7/2025
43.600.085
10/9/2025
43.600.090
10/13/2025
43.700.000 & .005
10/20/2025
43.700.008, .010 & .011
10/27/2025
43.700.015
10/30/2025
43.700.018, .020 & .021
11/3/2025
43.700.027
11/6/2025
43.700.030 & .031
11/10/2025
43.700.035 & .040
11/17/2025
43.700.050
11/24/2025
43.700.055 & 43.800
12/2/2025
43.800.010
12/8/2025
43.800.020 & .022
12/17/2025
43.800.024
12/19/2025
43.800.026
1/12/2026
43.800.030
1/19/2026
AfterSales
January 19, 2026

Page 12 of 13
PT4G Diagnostic Technical Information
TSTR 2603
Porsche Tester Software Update Information
USA Only
Software Version: 43.800.030
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 technicians who have attended Porsche service training courses. They are written to

inform those technicians of conditions that may occur on some Porsche vehicles, or to provide information that could assist in the proper servicing of a vehicle. Porsche special tools may be necessary in order

to perform certain operations identified in these bulletins. Use of tools and procedures other than those 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, and know-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 device take 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
January 19, 2026

Page 13 of 13

1 23

Bestseller No. 1

ANCEL AD310 Classic Enhanced Universal OBD II Scanner Car Engine Fault Code Reader CAN Diagnostic Scan Tool, Read and Clear Error Codes for 1996 or Newer OBD2 Protocol Vehicle (Black)

CEL Doctor: The ANCEL AD310 is one of the best-selling OBD II scanners on the market and is recommended by Scotty Kilmer, a YouTuber and auto mechanic. It can easily determine the cause of the check engine light coming on. After repairing the vehicle's problems, it can quickly read and clear diagnostic trouble codes of emission system, read live data & hard memory data, view freeze frame, I/M monitor readiness and collect vehicle information.
Sturdy and Compact: Equipped with a 2.5 foot cable made of very thick, flexible insulation. It is important to have a sturdy scanner as it can easily fall to the ground when working in a car. The AD310 OBD2 scanner is a well-constructed mechanic tool with a sleek design. It weighs 12 ounces and measures 8.9 x 6.9 x 1.4 inches. Thanks to its compact design and light weight, transporting the device is not a problem. The buttons are clearly labelled and the screen is large and displays results clearly.
Accurate Fast and Easy to Use: The AD310 scanner can help you or your mechanic understand if your car is in good condition, provides exceptionally accurate and fast results, reads and clears engine trouble emission codes in seconds after you fixed the problem. This device will let you know immediately and fix the problem right away without any car knowledge. No need for batteries or a charger, get power directly from the OBDII Data Link Connector in your vehicle.
OBDII Protocols and Car Compatibility: Many cheap scan tools do not really support all OBD2 protocols. AD310 scanner as it can support all OBDII protocols such as KWP2000, J1850 VPW, ISO9141, J1850 PWM and CAN. This device also has extensive vehicle compatibility with 1996 US-based, 2000 EU-based and Asian cars, light trucks, SUVs, as well as newer OBD2 and CAN vehicles both domestic and foreign. Pls confirm with our customer service whether it is compatible with your vehicle before purchasing.
Home Necessity and Worthy to Own: This is an excellent code reader to travel or home with as it weighs less and it is compact in design. You can easily slide it in your backpack as you head to the garage, or put it on the dashboard, this will be a great fit for you. The AD310 is not only portable, but also accurate and fast in performance. Moreover, it covers various car brands and is suitable for people who just need a code reader to check their car.

Bestseller No. 2

MOTOPOWER MP69033 Car OBD2 Scanner Code Reader Engine Fault Scanner CAN Diagnostic Scan Tool for All OBD II Protocol Cars Since 1996, Yellow

Multi-Functions - Practical Multi-Functions OBD2 code reader features built-in OBD2 DTC lookup library, which help you to determine the cause of the engine light, read code, erase code, view freeze frame, I/M ready, vehicle information, data flow, real-time curve, get vehicle speed information, calculate load value, engine coolant temperature, get engine speed.
Wide Capability - Supports 9 protocols compatible with most 1996 US-Based, 2000 EU-Based and Asian cars, and newer OBD II & CAN domestic or import vehicles. Supports 6 languages - English,German, Dutch, Spanish, French, Italian.
2.8" LCD Display - Designed with a clear display 2.8" Large LCD screen - white backlight and contrast adjustment. No need any battery or charger, OBD reader gets the power directly from your vehicle through the OBDII Data Link Connector.
Compact Design - Car diagnostic scanner is equipped with a 2.5 feet long cable and made of a very thick flexible insulator.There are 6 buttons on OBD2 Scanner:scroll up/down,enter/exit and buttons that quick query VIN vehicle number& the DTC fault code.
ABS / Airbag codes NOT Supported - It is able to read and clear check engine information which is part of OBDII system, but it cannot work with non-OBDII systems, including ABS / Airbag / Oil Service Light, etc.

Bestseller No. 3

FOXWELL NT301 OBD2 Scanner Live Data Professional Mechanic OBDII Diagnostic Code Reader Tool for Check Engine Light

【Your Personal CEL Doctor – Read & Clear Engine Codes】The NT301 OBD2 scanner lets you read diagnostic trouble codes (DTCs), check em-issions readiness, turn off your Check Engine Light (CEL) or MIL, reset monitors, and view live data streams. It retrieves your vehicle's VIN instantly. Like all standard OBD2 scanners, it clears codes only after repairs are completed—if the issue persists, the code will return. Designed for DIYers who want to understand what’s really going on under the hood.
【Easy Code Reading – Just Plug & Play】Simply plug into the OBD2 port, turn the ignition to “ON” (engine off), and select the correct menu: Select OBDII-> Wait for seconds-> Select Read codes. For accurate results, ensure your vehicle is compatible and the OBD2 port is free from damage or wiring issues. No batteries needed— powered directly by your car.
【Live Data Graphing & Accuracy for Most OBD2 Vehicles】View and log live sensor data in graph form—monitor oxygen sensors, fuel trims, coolant temp, RPM, and more. Spot trends and suspicious values in real time. Compatible with most 1996+ gasoline cars, light trucks, and SUVs sold in the U.S., as well as many 2000+ European and Asian models. Also works on 12V diesel vehicles equipped with OBD2.
【S-mog Check Helper – Know Your Readiness Status at a Glance】With dedicated I/M readiness hotkeys and a simple Red-Yellow-Green LED indicator, you’ll instantly know if your vehicle is ready for em-issions testing. Built-in speaker provides audio feedback. No guesswork—just confidence before you head to the test center.
【A Must-Have Tool for Every Home Mechanic】Compact, rugged, and ready to use right out of the box. The 2.8” color screen is easy to read, even in daylight. No charging or setup required—just plug into the 16-pin DLC and start diagnosing. Recommended by professional mechanics on YouTube and trusted by DIYers worldwide.

Last update on 2026-03-23 / Affiliate links / Images from Amazon Product Advertising API

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