No. 203-21

Service
Technical Information
203/21 ENU
9125
9
Vehicle Sporadically Not Available via Remote Access Services: Re-Program Connect
Control Unit (203/21)
Vehicle Type:
911 Carrera (992)
Model Year:
As of 2020
Concerns:
Connect control unit (external communication control unit)
Information:
Customers complain that the vehicle cannot be accessed intermittently via the Remote Access services
after switching off the ignition (access to the vehicle using a smartphone). Stopping the vehicle in an area
without GPS reception (e.g. underground car park) will cause a fault.
Action required: In the event of a customer complaint, read out and check the software version of the Connect control unit
(external communication control unit) using PIWIS Tester software version 40.600.010 (or higher).
•
•
If the software version is '0412' (or older), re-program the Connect control unit (external communication control unit) using programming code 'A3D7K'.
If the software version is already '0420', the fault must be found and corrected otherwise.
The new software version improves closed-circuit current behavior when the Vehicle Tracking System
(VTS) is active and access via the Remote Access Services (access to the vehicle using a smartphone).
Information
The total time required for control unit programming is approx. 15 minutes.
Required tools
Information
The 911 (992) is equipped with either a lithium starter battery (I-no. J2A) or an AGM starter battery
(I-no. J0V, J4K) as standard.
This depends on the following:
•
Country version
•
Model type
•
Vehicle equipment
Lithium starter batteries must only be charged using a suitable battery charger that has a current
and voltage-controlled charge map.
For further information about the battery chargers to be used, see  Workshop Manual '270689
Charging battery/vehicle electrical system'.
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Tool:
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•
•
Technical Information
203/21
Battery charger with a current rating of at least 90 A and, if required, also with a current and
voltage-controlled charge map for lithium starter batteries, e.g. VAS 5908 battery charger,
90A
9900 - PIWIS Tester 3 with PIWIS Tester software version 40.600.010 (or higher) installed
Preparatory work
WARNING
Electrically moved side windows and rear spoiler
•
Danger of limbs being trapped or severed
•
Risk of damage to components

Do not reach into the danger area.

Keep third parties away from the danger area.

Do not move components or tools into the danger area.

Retract roll-up sun blinds on the rear side windows before starting programming or coding.
NOTICE
Fault entry in the fault memory and control unit programming aborted due to undervoltage.
•
Increased current draw during diagnosis or control unit programming can cause a drop in voltage, which
can result in one or more fault entries and the abnormal termination of the programming process.

Before getting started, connect a suitable battery charger with a current rating of at least 90 A to the
jump-start terminals.
NOTICE
Control unit programming will be aborted if the Wi-Fi connection is unstable.
•
An unstable Wi-Fi connection can interrupt communication between PIWIS Tester II and the vehicle
communication interface module (VCI). As a result, control unit programming may be aborted.

During control unit programming, always connect the PIWIS Tester to the vehicle communication module
(VCI) via the USB cable.
NOTICE
Control unit programming will be aborted if the driver's key is not recognized
•
If the driver's key is not recognized in the vehicle, programming cannot be started or will be interrupted.

Place the driver's key with the back facing down in front of the lock opening for the center console cover to
guarantee a permanent radio link between the vehicle and driver's key.
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Service
Technical Information
Work procedure: 1
2
203/21 ENU
9125
9
Carry out general preliminary work for control unit programming as described in  Workshop
Manual '9X00IN Basic instructions and procedure for control unit programming - section on
"Preliminary work"'.
Read out the software version.
2.1
Select 'Connect' control unit.
2.2
Select the "Extended identifications" tab.
2.3
Check the software version.
•
•
If the software version is '0412' (or older), re-program the Connect control unit (external
communication control unit) using programming code 'A3D7K'.
If the software version is already '0420', the fault must be found and corrected
otherwise.
Reprogramming the Connect control unit (external communication control unit)
NOTICE
Use of a PIWIS Tester software version that is older than the prescribed version
•
Measure is ineffective

Always use the prescribed version or a higher version of the PIWIS Tester software for control unit
programming and coding.
Work procedure: 1
The basic procedure for programming a control unit is described in the Workshop Manual 
Workshop Manual '9X00IN Basic instructions and procedure for control unit programming using the
PIWIS Tester - section on "Programming"'.
Specific information on control unit programming in the context of this Technical Information:
Required PIWIS Tester software version:
40.600.010 (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.
Programming code:
A3D7K
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Technical Information
203/21
Read and follow the information and instructions
on the PIWIS Tester during the guided programming
sequence.
During the programming sequence, the Connect
control unit (external communication control unit) is
re-programmed and then automatically re-coded.
Programming sequence:
Do not interrupt programming.
Programming time (approx):
15 minutes
Software version programmed during this
campaign:
0420
Procedure in the event of error messages
appearing during the programming
sequence:
 Workshop Manual '9X00IN Basic instructions and
procedure for control unit programming - section on
"Troubleshooting"'.
Procedure in the event of abnormal termination of control unit programming:
Repeat control unit programming by restarting
programming.
Following control unit programming, the software
version can be read out of the Connect control unit in
the  'Extended identification' menu using the PIWIS
Tester.
Concluding work
Work procedure: 1
Carry out general rework for control unit programming as described in  Workshop Manual '9X00IN
Basic instructions and procedure for control unit programming using the PIWIS Tester - section on
"Rework"'.
Invoicing
Invoicing:
For documentation and invoicing in the event of a guarantee, state the work items required depending on
the scope of work and the specified PCSS encryption in the guarantee claim:
APOS
Labor operation
91252501
Control units for external communication program
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I No.
AfterSales
Service
Technical Information
203/21 ENU
9125
9
PCSS encryption:
Location (FES5)
91250
Control unit for external communication
Damage type (SA4)
1613
does not function occasionally
References:
 Workshop Manual '270689 Charging battery/vehicle electrical system'
 Workshop Manual '9X00IN Basic instructions and procedure for control unit programming - section on
"Preliminary work"'
 Workshop Manual '9X00IN Basic instructions and procedure for control unit programming using the
PIWIS Tester - section on "Programming"'
 Workshop Manual '9X00IN Basic instructions and procedure for control unit programming - section on
"Troubleshooting"'
 Workshop Manual '9X00IN Basic instructions and procedure for control unit programming using the
PIWIS Tester - section on "Subsequent work"'
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.
© 2022 Porsche Cars North America, Inc.
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