No. 2231

9
Bulletin #: 2231
Advanced Technical Information
Part ID: 9981B
Porsche Mobile Charger Connect (PMCC) Software Bugs, Loss of Power Setting
Vehicles Affected
Models
Model Year
Model Type
VIN Range
Vehicle-Specific Equipment
Taycan
As of 2020
Y1A, Y1B, Y1C
n/a
n/a
Cayenne
As of 2019
9YA, 9YB
n/a
all E-Hybrid models
Panamera
As of 2019
971
n/a
all E-Hybrid models
Revision History
Revision
Release Date
Changes
0
November 11, 2022
Original document
Condition
Customer complains the Porsche Mobile Charger Connect (PMCC)
does not retain the ‘last mode’ power setting. For example, the
customer sets the charging power to 40A (100%), but it reverts
to 20A (50%) following a charger Sleep Cycle or following a power
cycle.
Technical Background
PMCC Communication Board (CommBoard) Software (SW) Version
3014 was released to address software bugs in SW version 2934,
e.g. “server authentication error”. Unfortunately, SW 3014 introduced
a new bug that can cause the PMCC to lose the desired “last mode”
setting for charging current / output in conjunction with PowerBoard
SW 4100 or lower. That means the power setting reverts to 50%
when the charger is unplugged or when the charger enters a sleep
cycle.
Communication Board Software 3014 was available via online and
update for 8 days before it was stopped.
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9
Bulletin #: 2231
Advanced Technical Information
Part ID: 9981B
This software bug is unrelated to Workshop Campaign WMP2, but the timing and contents of WMP2 and the
software bug have led to further confusion.
19.Aug.2022 - WMP2 published
27.Sep.2022 - PMCC communication board SW 3014 released via automatic update
30.Sep.2022 - Customer letter sent to customers affected by WMP2
05.Oct.2022 - PMCC communication board SW 3014 stopped
PowerBoard software is loaded via direct connection to the PIWIS Tester (PT3G or PT4G). PowerBoard SW 4100 		
was first released via Workshop Campaign WMA7, in conjunction with WMA5 and WMA6 (J1 VR12.1 updates) in 		
Q1/2021. PowerBoard SW 4100 remains the latest available as of this publication.
Service Information
Even with software 3014, last mode is retained when sleep mode is deactivated via the WebApp, provided the
charger remains plugged in.
Instructions on how to check/change Sleep Mode via the WebApp can be found in the PMCC Operating Manual 		
provided with the charging hardware and available through the Porsche E-Performance Help Page.
Porsche Dealers may reference ATI 2016.1 “Porsche Mobile Charger Connect Diagnosis and utilizing the Web
Application” (Part ID 9981) for further information.
The software supplier is working on re-releasing SW2934 as SW3015 via online update and the Porsche E-Performance website. Release timing is currently TBD.
An update to PowerBoard software 4400 (or higher) will be communicated once available. Subsequent release of 		
CommBoard Software with intended bugfixes over and above SW3014/3015 will follow once available.
No parts should be replaced for this software bug.
Updated software will be released as soon as possible.
This document will be updated to reflect the latest available information.
Warranty
As always, please document the repair completely in PQIS.
For this repair, please code the “Cause” as follows:
Location:
9981B Mobile Charger Connect
Symptom:
1614 Function not as specified
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Nov 11, 2022
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Bulletin #: 2231
Advanced Technical Information
Part ID: 9981B
9
Search Items
Mobile Charger Connect, PMCC, evse, charger, last mode, 50%
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.
SBT-L14
©2022 Porsche Cars North America, Inc.
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