NHTSA ID Number: 10189709
Manufacturer Communication Number: No. 06-21-2
TSB/Document Date: 2021-04-02
Summary
Instructions for re-programming the DME control unit in the event that there are warning messages in the instrument cluster.
Service
Technical Information
06/21
ENU
2470
2
Complaint - Warning Messages in the Instrument Cluster/Fault Memory Entries in the DME
Control Unit: Re-Programming DME Control Unit (06/21)
Vehicle Type:
911 Carrera (992)/911 Carrera S (992)/911 Carrera 4 (992)/911 Carrera 4S (992)
Model Year:
As of 2020 up to 2021
Concerns:
Engine electronics (DME) control unit
Information:
New software available for the engine electronics (DME) control unit. The new software will correct the
following fault symptoms:
•
The yellow warning 'Engine control system fault – Driving permitted' is displayed together with
the white error message 'ACC not available' in the instrument cluster. The message can appear at
speeds above 170 km/h (106 mph) or can occur sporadically when the button on the control stalk
for activating ACC is pressed briefly.
•
The warning 'Engine control system fault' is displayed in the instrument cluster. The message
appears when the brake pedal is pressed and the convertible top or front axle lift system is activated
at the same time. The fault memory entry 'P070300 – Brake light switch – electrical fault' is
stored in the fault memory of the DME control unit.
•
The fault memory entries 'P1BFC00 – Radiator shutter 1 (left) – position implausible' and
'P1BFD00 – Radiator shutter 2 (right) – position implausible' are stored in the fault memory
of the DME control unit. This is caused by different position detection of the radiator shutter control
unit and DME control unit.
Action required: In the event of a customer complaint, re-program the DME control unit.
Information
The total time required for control unit programming is approx. 12 minutes.
Required tools
Information
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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Mar 9, 2021
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Tools:
ENU
•
•
Technical Information
06/21
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. VAS5908 battery charger,
90A
9900 - PIWIS Tester 3 with PIWIS Tester software version 39.900.015 (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 WiFi connection is unstable.
•
An unstable WiFi connection can interrupt communication between the PIWIS Tester and the vehicle
communication module (VCI). As a result, 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.
Mar 9, 2021
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AfterSales
Service
Technical Information
Work Procedure: 1
2
06/21
ENU
2470
2
Connect a battery charger with a current rating of at least 90 A, e.g. battery charger, 90A, to the
jump-start terminals in the luggage compartment and switch it on. Workshop Manual '270689
Charging battery/vehicle electrical system'
Place remote control (hand-held transmitter) in the emergency start tray.
Emergency start tray
3
Connect 9900 - PIWIS Tester 3 to the vehicle communication module (VCI) via the USB cable.
Then connect the communication module to the vehicle and switch on the PIWIS Tester.
4
Switch on ignition.
Re-programming DME 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:
39.900.015 (or higher)
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Technical Information
06/21
Type of control unit programming:
Control unit programming using the 'Automatic
programming' function of the DME control unit:
'Engine electronics (DME)' control unit –
'Coding/programming' menu – 'Automatic
programming' function.
Read and follow the information and instructions
on the PIWIS Tester during the guided programming
sequence.
During the programming sequence, the DME control
unit is re-programmed and then re-codedautomatically.
Programming sequence:
Do not interrupt programming and coding.
Once the control units have been programmed and
coded, you will be prompted to switch the ignition off
and then back on again after a certain waiting time.
Backup documentation of the new software versions is
then performed.
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Programming time (approx.):
12 minutes
Data record (software part number and
software version) programmed for the DME
control unit during programming:
See Technical Information '9X00IN Overview of the
programmed software versions'.
Procedure in the event of abnormal termination of control unit programming:
• Switch ignition off and then on again.
• Read out and erase fault memories Workshop
Manual '9X00IN Basic instructions and procedure
for control unit programming using the PIWIS Tester section on "Subsequent work"'.
• Repeat control unit programming by restarting
programming.
Procedure in the event of error messages
appearing during the programming
sequence:
Workshop Manual '9X00IN Basic instructions and
The software part number and software version of the
programmed data record are based on the specified
PIWIS Tester software version. Please note that these
may have changed in a higher version.
procedure for control unit programming using the
PIWIS Tester - section on "Fault finding"'.
AfterSales
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Technical Information
06/21
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2
Overview of the programmed software versions
Overview:
911 Carrera
Exhaust emission
standard
Control unit
Software Part No. *
Software version*
LEV3/Tier3
(I-no. 7CA)
(I-no. 7CE)
(I-no. 7MU)
DME
992906021AQ
0001
Exhaust emission
standard
Control unit
Software Part No. *
Software version*
LEV3/Tier3
(I-no. 7CA)
(I-no. 7CE)
(I-no. 7MU)
DME
992906020BJ
0001
911 Carrera S
* The software part number and software version of the programmed data record are based on the
specified PIWIS Tester software version. Please note that these may have changed in a higher version.
Performing radiator shutter adaptation
Work Procedure:
Information
Only necessary if the following fault memory entries were stored:
•
'P1BFC00 – Radiator shutter 1 (left) – position implausible'
•
'P1BFD00 – Radiator shutter 2 (right) – position implausible'
1
Select 'Maintenance/repairs' menu.
2
Select the 'Radiator shutter adaptation' function
so that the corresponding text line turns blue and
then press •F8“ ('Start') to start radiator shutter
adaptation Radiator shutter adaptation.
3
Follow the instructions on the PIWIS Tester while
radiator shutter adaptation is being performed
PIWIS instructions.
Once adaptation is complete, a tick will appear in the
'Value' field on the PIWIS Tester display.
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Radiator shutter adaptation
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Technical Information
06/21
If radiator shutter adaptation is not completed
successfully, the adaptation must be repeated.
4
End radiator shutter adaptation by pressing •F8“
('Stop').
5
Press •F11“ ('Back') to return to the start page of
the 'Maintenance/repairs' menu.
PIWIS instructions
6
Select the 'Overview' menu to return to the control
unit selection screen Control unit selection.
Control unit selection
Concluding work
Work Procedure: 1
Carry out general subsequent work for control unit programming as described in Workshop
Manual '9X00IN Basic instructions and procedure for control unit programming using the PIWIS
Tester - section on "Subsequent work"'.
Invoicing
For documentation and invoicing in the event of a warranty claim, enter the labor operations and PQIS
coding specified below in the warranty claim, depending on the required scope of the measures to be
performed:
I No.
APOS
Labor operation
24702540
Programming DME control unit
24702541
Programming DME control unit/Radiator shutter
adaptation
Mar 9, 2021
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AfterSales
Service
Technical Information
06/21
ENU
2470
2
PQIS coding:
Location (FES5)
24700
DME control unit
Damage type (SA4)
1200
Incorrect/missing part
References:
Workshop Manual '270689 Charging battery/vehicle electrical system'
Workshop Manual '9X00IN Basic instructions and procedure for control unit programming using the
PIWIS Tester'
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.
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TSB/Document ID: No. 06-21-2
Replacement Service Bulletin Number:
MFR Communication Date: 2021-03-09
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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