No. 38-21 Service Bulletin/Repair Instructions

Service
Technical Information
38/21
ENU
0940
0
Sale of Chargers (Porsche Mobile Charger Connect) - Checking Software Version and

Updating it if Necessary Before Delivery to Customers (38/21)

Concerns:
Charger (Porsche Mobile Charger Connect)
Model Year:
As of 2020
Information:
Software optimizations are available for Porsche Mobile Charger Connect (software version

VR12.1.1).

The software update contains general fault corrections and function enhancements, such as encrypted

communication between the charging equipment and vehicle for secure information exchange, a new

display format during charging including the display of vehicle information, battery status and remaining

range as well as the "Plug & Charge Private" function with automatic detection of vehicles already

registered in Mobile Charger Connect when you plug in the charging cable without also having to enter

your PIN.

Information

The software update must always be performed if the vehicle for which the charger is purchased is

affected by workshop campaign WMA5 (Taycan MY 2020) or WMA6 (Taycan MY 2021) or already

has software version VR12.1.1 installed (vehicles produced from week 04/2021).

If the charger software is not updated, there is no guarantee that the vehicle will charge correctly.
Action required: Update the Porsche Mobile Charger Connect software using the PIWIS Tester with software version

39.900.095 (or higher) installed.
Required tools

No tools are required for checking the software version of the charger (Porsche Mobile Charger

Connect).

Tools:
•

•
9900 - PIWIS Tester 3 with software version 39.900.095 (or higher) installed.

VAS 611 009 - Diagnostic adapter for high-voltage charging system
Checking software version and updating software if necessary

WARNING

Working on electric components

•
Risk of burns
•
Risk of short circuit or fire.

Before replacing the power cable or vehicle cable, always disconnect the power cable from the electrical

socket.
AfterSales
Mar 26, 2021

Page 1 of 7
0
Service

0940
ENU
Technical Information
38/21

Only replace cables in a dry environment.

Porsche universal charger (AC) may only be used as a unit comprising power cable, control unit and

vehicle cable.

WARNING
Unsecured load

•
An unsecured, incorrectly secured or incorrectly positioned charger can slip out of place and endanger

occupants when braking, accelerating, changing direction or in the event of an accident.

Never transport the charger unsecured.

Stow the charger in the charging bag in the luggage compartment.

Always transport the charging bag in the luggage compartment, never in the passenger compartment

(e.g. on or in front of the seats).
Action required: 1
Check software versions of the charger (Porsche

Mobile Charger Connect) and compare them with the

table below.

The software versions are shown on the sticker on

the back of the charger (Porsche Mobile Charger

Connect)  Checking software versions.
Checking software versions

Software version
Next steps
Communication board software

(SW_C) and power board

software (SW_P) lower than
Software must be updated.

To do this, continue with  Step 2.
•

•
SW_C: 2925

SW_P: 4100
Communication board software

(SW_C) and power board

software (SW_P) is

•

•
Mar 26, 2021

Page 2 of 7
SW_C: 2925

SW_P: 4100
Software does not have to be updated. The charger software is

already up-to-date.

– End of action required –

The charger can be handed over to the customer.
AfterSales
Service
Technical Information
2
38/21
ENU
0940
0
Re-program the power board.

2.1
Secure the power cable  Connecting

diagnostic adapter -1- to the diagnostic

adapter for high-voltage charging

system  Connecting diagnostic adapter

-2- and connect this to the charger (Porsche

Mobile Charger Connect)  Connecting

diagnostic adapter -3-.
2.2
Connect the power cable to the power supply.
Connecting diagnostic adapter

2.3
Wait at least 3 minutes before connecting

9900 - PIWIS Tester 3 to the vehicle

communication module (VCI) via the USB

cable and connect the communication

module  Connecting communication

module (VCI) -1- to the diagnostic adapter

for high-voltage charging system (

Connecting communication module (VCI) -2-).
2.4
On the PIWIS Tester start screen, call up the

'Diagnostics' application.

The vehicle type is then read out, the diagnostic application is started and the control

unit selection screen is populated.
Connecting communication module (VCI)
2.5
Select the 'External components' model line in the 'manual model line selection' screen

and confirm with 'Next'.
2.6
Re-program the power board.

The basic procedure for control unit programming is described in the Workshop Manual 

Workshop Manual '9X00IN Basic instructions and procedure for control unit programming

using the PIWIS Tester'.

For specific information on programming the power board as part of this

programming process, see the table below:

Required PIWIS Tester software

version:
39.900.095 (or higher)
Type of control unit programming:
Control unit programming using the

'Campaign' function in the Additional menu

on the PIWIS Tester by entering a programming

code.
AfterSales
Mar 26, 2021

Page 3 of 7
0
Service

0940
ENU
Technical Information
38/21

Programming code:
M3K3U
Programming sequence:
Read and follow the information and

instructions on the PIWIS Tester during the

guided programming sequence.

Do not interrupt programming and coding.

A backup documentation process for the

re-programmed software versions starts as

soon as programming and coding is complete.
Programming time (approx.):
5 minutes
Software version programmed during

this campaign:
4100
The software version information in the

programmed data record is based on

the specified PIWIS Tester software

version. Please note that this may be

different in a higher version.
When programming is complete, the software

version can be read out of the charger (Porsche

Mobile Charger Connect) in the 'Extended identifications' menu using the PIWIS Tester.
Procedure in the event of abnormal

termination of control unit

programming:
Repeat programming by entering the

programming code again.
Procedure in the event of error

messages appearing during the

programming sequence:
 Workshop Manual '9X00IN Basic instructions

and procedure for control unit programming

using the PIWIS Tester - section on "Fault

finding"'.
2.7
Remove the PIWIS Tester from the charger (Porsche Mobile Charger).
2.8
Disconnect the power cable from the power supply and remove it from the diagnostic

adapter.
2.9
Remove the PIWIS Tester from the charger (Porsche Mobile Charger).
Information

A connection to a WiFi network is required for the communication board update.

If it is not possible to establish an Internet connection to the charger (Porsche Mobile Charger

Connect), the update can also be downloaded manually via the web address under E-Performance at

https://www.porsche.com and installed using the web application. This procedure is described further in

the instructions for the web application.
Mar 26, 2021

Page 4 of 7
AfterSales
Service
Technical Information

3
38/21
ENU
0940
0
Re-program the communication board.

3.1
Secure the power cable to the charger

(Porsche Mobile Charger) and connect it to

the power supply.
3.2
The charger starts after a waiting time of at

least 30 seconds.
3.3
Select the 'Settings' icon in the menu bar to

open the main menu  Opening Settings -1-.
Opening Settings

3.4
Select the 'Networks' function in the main

menu  Selecting Networks function -1-.
3.5
Activate WiFi  Connecting WiFi network -1and then select "WiFi networks" in order to

select the relevant network from the list of

detected WiFi networks  Connecting WiFi

network -2-.
3.6
Enter the WiFi password and confirm it.
Selecting Networks function
AfterSales
Mar 26, 2021

Page 5 of 7
0
Service

0940
ENU
Technical Information
38/21
3.7
Return to the selection screen using the

arrow key and select the 'Software updates'

function.
Connecting WiFi network

3.8
Deactivate automatic software updates 

Installing software update -1- and select the

'Download' function  Installing software

update -2-.

Information

Once the software update has been

performed, reset the customer's preferred

setting (Automatic update On/Off).
3.9
Once the latest software has been downloaded successfully, select the 'Install'

function in order to confirm the message

Software update available.

The update can take up to 5 minutes.
3.10
Once the update is complete, confirmation

of the software update that was performed is

displayed. Confirm with 'OK'.
Installing software update
Software version programmed during this sequence

•
Communication board: 2925
Following the update, the software version is displayed at the bottom of the screen in the

'Software updates' menu.
Mar 26, 2021

Page 6 of 7
AfterSales
Service
Technical Information

3.11

4
38/21
ENU
0940
0
Switch off the charger (Porsche Mobile Charger Connect)
Give the charger (Porsche Mobile Charger Connect) to the customer.
Invoicing

For documentation and warranty invoicing, enter the labor operations and PQIS coding specified below in

the warranty claim, depending on the repairs carried out:

APOS
Labor operation
09400100
Checking high-voltage charging cable
09402550
Programming high-voltage charging cable
I No.
PQIS coding:

Location (FES5)
09400
High-voltage charging cable
Damage type (SA4)
9735
Repair in accordance with PAG instructions
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 PIWIS diagnostic and testing device take precedence and, in the event of a

discrepancy, the work procedures in the PIWIS Tester are the ones that must be followed.
© 2021 Porsche Cars North America, Inc.
AfterSales
Mar 26, 2021

Page 7 of 7

SaleBestseller No. 1

ANCEL X7HD 10'' Heavy Duty Truck Scanner, Semi Trucks Full System Diagnostic Tool, Bidirectional Diesel Scan Tool with DPF, ECU Coding, 40+ Reset for Cummins, Detroit, Caterpillar, Volvo, Paccar etc

🔥🔥🔥2026 New Functions Making X7HD the Top Dog - Big Surprise!!! ANCEL X7HD truck scanner 10 major functional advantages .✅>Full HDOBD/OBD2 Function ✅>ALL System Diagnostic ✅>42+ Reset Function ✅>Active Test / Bi-Directional Control✅>ECU Coding✅>Graphing Live Data✅>Wide Compatibility ✅>2 Yrs Free Update✅>Remote Operation✅>Bluetooth 5.0 & Wifi In addition, 8 major hardware advantages: ✅>6000 mAh✅>10.1 inch Tablet✅>2G RAM✅>32G ROM (Expandable to 128GB)✅>Data Record & Replay & Print✅>Android 10.0✅>Bluetooth 5.0 & Wifi✅>14 Languages
🚛OEM DPF Forced Regen & Cylinder Cutout Test & more - ANCEL X7HD diesel scanner diagnostic tool not only supports DPF regeneration, DPF reset, DPF related information reset, DPR state reset, DPD forced regeneration etc, which helps you better solve the exhaust aftertreatment system problems, but also supports activate motor to do exhaust air in ABS Automatically. Moreover, it features TPMS activation, cylinder cut-off and learning functions
🚛Advanced ECU Coding & Programming - ANCEL X7HD 10.1inch truck scanner diagnostic tool is equipped with advanced ECU coding, supports Level calibration, Idle speed learning and Adjustment, Camshaft timing control learning, Control unit adaptations, Injector Codes, Read/Write VIN, Road speed limit optional vehicle speed set, etc... PLEASE NOTE that ECU codes are not compatible with all vehicles, please send us your VIN# to check vehicle compatibility
🚛42+ Reset Functions & Bidirectional Control - 2026 newest top heavy duty truck scan tool, comes with 42+ special services (ECU, Speed Limit and Idle Reset, Oil Reset, Injector Coding, EPB, ABS, SRS, Suspension, Throttle, etc. and always keep growing), which meet all your various needs for service and maintenance
🚛10 Inch All Systems Diesel Scanner & Full HDOBD/OBD2 Modes - ANCEL X7HD diesel truck scan tool supports all systems scan, such as Engine, Brake, Retarder, TECU Transmission, Tachograph, ABS, SRS, TPMS, EPB, SAS, ESP, and other vehicle systems, comes with 10 obd2 service modes: read/erase error codes, Data Stream, I/M Readiness, Vehicle Information, Actuations, DTC Lookup, EVAP, view freeze frame, etc

SaleBestseller No. 2

ANCEL Heavy Duty Truck Scanner HD601 All System Diesel Diagnostic Scan Tool fits for Cummins, Detroit, Freightliner, International, Paccar, Check Engine for Truck & Car 2 in 1 Code Reader

【Extensive Compatibility】HD601 heavy duty truck scanner supports 12V & 24V commercial vehicles and all major truck models that comply with standard protocols (SAE J1939, SAE J1708, ISO 14230-4, ISO 15765-4 and ISO 9141-2, ISO 27145-4 and Euro6). Fits for Cummins, Paccar, Detroit, Caterpillar, Freightliner, International, Peterbilt, Ford Heavy Truck, Class 4-Class 8 trucks, etc. It also supports engine diagnosis on most cars, minivans, light trucks and pickups
【 Full System Diagnostic】HD601 Diesel Scanner supports all system scans of heavy trucks compliant with standard protocols SAE J1939 & J1708, such as Engine, ABS, Transmission, Braking System, ESP, EPS, Fuel System, etc, It is a great scan tool for Cummins, Caterpillar, Detroit, Caterpillar, Maxxforce, Bendix,Wabash, Wabaco, Haldex, Allison, Eaton heavy trucks, With this truck tool, you can get deep analysis data about the system and do some repairs by yourself, saving much time and money. Note: Only heavy truck vehicles that comply with the above protocol can diagnose the entire system
【Enhanced Diesel OBD Scanner】The HD601 Diesel OBD Scanner offers unparalleled diagnostic capabilities for heavy-duty trucks. Beyond code reading, clearing, and live data display, it retrieves vehicle information, freeze frames, and DTCs. With 6, 9, and 16 pin cables, it ensures compatibility with various engines. This scanner's real-world testing prowess ensures comprehensive support for a wide array of heavy-duty truck engines, making it an indispensable tool for truck diagnostics
【DTC Library】+【Life Time Free Update】The built-in DTC library allows you to retrieve the codes directly without searching for the definition in the book. Whether you are a professional mechanic or a DIY car owner, HD601 diesel scanner explains the existing problem, makes it easier for you to understand code definitions and helps you locate vehicle faults. Note: This device cannot directly solve the fault. Plus, you get a lifetime free internet updates, so you always have the latest software for diagnostics in English and Spanish languages.
【Friendly Design, Easy of Use】This scanner is plug and play, simple and convenient, and very friendly for beginners. With improved buttons for easy menu navigation. The excellent 2.8 inch LCD color screen makes it easy to view the displayed results and gives you a better overview of your car's problem areas and the identified codes. In addition, the processor is super-fast and responds without lagging, providing maximum comfort and efficiency in diagnostic and service work

SaleBestseller No. 3

NEXAS Heavy Duty Truck Scanner NL102 Full System Diesel Truck Scan Tool for Cummins, Isuzu, Freightliner, Caterpillar, Detroit, Peterbilt, 2-in-1 Code Reader Read & Clear Fault Codes for Truck & Car

Why NEXAS NL102 Truck Scan Tool? The NL102 outshines other truck scanner with its extensive diagnostic features. It offers full system diagnostics for major trucks meeting standard protocols, along with complete OBD2 functionality. Beyond read fault codes, clear codes and live data display, it enables vehicle info retrieval, freeze frame capture, and DTC lookup. Equipped with 6-pin, 9-pin, 16-pin connectors, it ensures broad truck compatibility. Plus, enjoy lifetime free updates in English, Spanish, and French, keeping your diagnostic scanner software current.
Wide Compatibility - Friendly Reminder: To avoid compatibility issues, please confirm with us via Amazon Messages before purchasing. This heavy duty truck scanner is compatible with all heavy-duty trucks and semi that adhere to standard protocols (J1587, J1939, J1708). It covers a wide range of vehicle models, including Cummins, Detroit, Caterpillar, Freightliner, International, Kenworth, John Deere, Peterbilt, Sterling, Mack, Paccar, Western Star, Mercedes-Benz, Volvo, Scania, MAN, Renault, ERF, Foden, Seddon-Atkinson, Iveco, DAF, SISU, STEYR, ISUZU etc. Equipped with 6-pin, 9-pin, and 16-pin connectors for versatile device compatibility, ensuring stable plug-and-play connections.
Save Hundreds of Money for All Heavy Duty Trucks – This diesel diagnostic scanner supports accurate full-system scans for all heavy-duty trucks that comply with standard protocols (J1587, J1939, and J1708). It can read and clear trouble codes across a range of vehicle systems, including the engine, transmission, instrument panel, drivetrain, brake system, suspension, ABS, ESP, EPS, fuel system, etc. The truck scanner communicates directly with your truck's computer to provide real-time data stream analysis, letting you pinpoint issues with precision. This cuts down on waste from unnecessary part replacements, saving you time and hundreds or even thousands of dollars.
All OBD2 Functions + Battery Health Monitoring – Unlike many obd2 scanners on the market that only cover partial OBD2 features, ours gives you full OBD2 capability: read & clear codes, live data, freeze frame data, I/M readiness checks, EVAP tests, on-board monitor, O2 sensor tests, vehicle info, and DTC lookup. That means more detailed insights for pros and DIYers alike. The NL102 isn't just a code scanner – it's a battery saver. Regularly check your car's battery health, and catch issues before it dies completely. No more unexpected no-starts in the driveway or on the road. It diagnoses battery condition accurately, helping you avoid costly last-minute repairs.
Plug and Play & One-click for DTC: NEXAS diesel scanner is user-friendly. It comes with an intuitive screen and easy-to-understand interface, making it accessible even for non-professionals to get started. And the built-in DTC library in the code reader allows you to directly retrieve codes without searching for definitions in books, making it easier to understand the code definitions and solve problems more quickly.

This product presentation was made with AAWP plugin.

Last update on 2026-05-12 / Affiliate links / Images from Amazon Product Advertising API

Buffer Email Facebook Flipboard Hacker News LinkedIn Messenger Mix Pinterest Print Reddit SMS Telegram Tumblr X VK WhatsApp Line Xing Threads Bluesky Copy Mastodon Nextdoor