NHTSA ID Number: 10125203
Manufacturer Communication Number: 122-E7X5D-12
TSB/Document Date: 2017-12-14
Summary
Subject: Control unit for Porsche
Active SuspensionManagement (PASM) Information: On vehicles with air suspension, the vehicle level can be lowered after the vehicle has been idle for a long time. At temperatures below 5 F (-15 C), this can result in the front axle being lowered to the low level.
Service
Technical Information
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WH29 - Re-programming PASM Control Unit (Workshop Campaign)
Important:
CRITICAL WARNING - This campaign includes steps where control unit(s) in the vehicle will be
programmed with the PIWIS Tester. The vehicle voltage must be maintained between 13.5 volts and 14.5
volts during this programming. Failure to maintain this voltage could result in damaged control unit(s).
Damage caused by inadequate voltage during programming is not a warrantable defect. The technician
must verify the actual vehicle voltage in the PIWIS Tester before starting the campaign and also document
the actual voltage on the repair order.
Model Year:
As of 2017 up to 2018
Model Line:
Panamera (971)
Equipment:
Air suspension with Porsche Active Suspension Management (I-no. 1BK)
Subject:
Control unit for Porsche Active Suspension Management (PASM)
Information:
On vehicles with air suspension, the vehicle level can be lowered after the vehicle has been
idle for a long time. At temperatures below 5° F (-15° C), this can result in the front axle being
lowered to the low level.
In some cases, the vehicle's levelling system cannot then be raised to the correct level within the time
period defined in the diagnostic threshold values. As a result, a fault is detected and a corresponding
warning will be displayed in the instrument cluster. The warning remains active after switching the ignition
off and on again even though the fault is no longer present.
Remedial
Action:
Re-program the PASM control unit using the PIWIS Tester with software version 36.000 (or higher)
installed.
With the new software version, the time period in the diagnostic threshold values is increased until the
fault is set and the fault reset strategy is optimized.
Information
During the campaign, the PASM control unit is re-programmed and then re-coded automatically.
It takes about 10 minutes to program and code the control unit.
Affected
Vehicles:
Only the vehicles assigned to the campaign (see also PIWIS Vehicle information). This campaign affects
2,381 vehicles in North America.
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Required tools
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.
Tools:
•
•
9900 - PIWIS Tester 3 with PIWIS Tester software version 36.000 (or higher) installed
Battery Charger/Power Supply - Suitable for AGM Type batteries, recommended current rating of
90A fixed voltage 13.5V to 14.5V
Preparatory work
NOTICE
Fault entry in the fault memory and control unit programming aborted due to low-voltage.
•
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 starting control unit programming, connect a suitable battery charger or power supply, suitable for
AGM type batteries, recommended current rating of 70A fixed voltage 13.5V to 14.5V.
NOTICE
Completely dead vehicle battery
•
The break in communication in the vehicle system during programming causes safety-relevant functions,
e.g. driving light and brake light, to be switched on automatically. This results in an increased current
draw, which will run down the vehicle battery.
Before starting control unit programming, connect a suitable battery charger or power supply, suitable for
AGM type batteries, recommended current rating of 70A fixed voltage 13.5V to 14.5V.
NOTICE
Control unit programming will be aborted if the Internet connection is unstable.
•
An unstable Internet connection can interrupt communication between PIWIS Tester and the vehicle
communication module (VCI). As a result, control unit programming may be aborted.
During control unit programming, always connect PIWIS Tester to the vehicle communication module (VCI)
via the USB cable.
Nov 20, 2017
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AfterSales
Service
Technical Information
Work Procedure: 1
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Carry out general preliminary work for control unit programming as described in Workshop
Manual '9X00IN Basic instructions and procedure for control unit programming using the PIWIS
Tester'.
Re-programming PASM 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.
Information
The procedure described here is based on the PIWIS Tester 3 software version 36.000.
The PIWIS Tester instructions take precedence and in the event of a discrepancy, these are the
instructions that must be followed.
A discrepancy may arise with later software versions for example.
Information
During the campaign, the PASM control unit is re-programmed and then re-coded automatically.
It takes about 10 minutes to program and code the control unit.
Work Procedure: 1
Re-program PASM control unit.
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 control unit programming during this campaign, see the table
below:
Required PIWIS Tester software version:
36.000 (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:
R2N6T
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Read and follow the information and instructions
on the PIWIS Tester during the guided
programming sequence.
During the programming sequence, the PASM
control unit is re-programmed and then
re-codedautomatically.
Programming sequence:
Do not interrupt programming and coding.
Programming time (approx):
10 minutes
Software version programmed during this
campaign:
1130
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 entering the
programming code again.
Procedure in the event of error messages
appearing during the programming
sequence:
Workshop Manual '9X00IN Basic instructions and
Following control unit programming, the software
version can be read out of the control unit for
chassis control (PASM) in the 'Extended identifications' menu using the PIWIS Tester.
procedure for control unit programming using the
PIWIS Tester - section on "Fault finding"'.
Reading out and erasing fault memory
Information
Brief breaks in communication between the control units during programming and coding can result in
fault memory entries in all control units in the vehicle system, which might not be deleted automatically.
In addition to the automatic deletion of the fault memories during programming, the fault memories
of all control units must therefore be read out and deleted again as described below after each
programming and coding process.
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AfterSales
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Technical Information
Work Procedure: 1
2
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Press •F7“ in the control unit selection screen ('Overview' menu) to call up the Additional menu.
Select the function “Read all fault memories and
erase if required” and press •F12“ ('Next') to
confirm your selection Erasing fault memories.
The fault memories of the control units are read out.
3
Once you have read out the fault memories, check
the fault memory entries.
Information
If control units are found to have faults that are not
Erasing fault memories
caused by control unit programming, these must first
be found and corrected. This work cannot be invoiced under the workshop campaign number.
4
Press •F8“ to delete fault memory entries.
5
Press •F12“ ('Yes') in response to the question as to whether you really want to delete all fault
memory entries.
The faults stored in the fault memories of the various control units are deleted.
Information
If fault memory entries for individual control units cannot be deleted, proceed as follows:
•
Switch off the ignition.
•
Disconnect the PIWIS Tester diagnostic connector from the diagnostic socket.
•
Lock the vehicle using the driver's key.
•
Wait approx. 1 minute before unlocking the vehicle again.
•
Start the engine, leave it running for a short time and then stop it again.
•
Switch off the ignition and wait approx. 10 seconds before switching it back on again.
•
Plug the PIWIS Tester diagnostic connector into the diagnostic socket again and restore
communication with the vehicle.
•
Read out the fault memory again and delete any fault memory entries that are stored.
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Once you have erased the fault memories, select
the 'Overview' menu to return to the control unit
selection screen Control unit selection.
Control unit selection
Calibrating the levelling system
Work
Procedure:
WARNING
Automatic lifting and lowering of the vehicle
•
Danger of limbs being trapped when working on the vehicle during the adjustment procedure.
The vehicle must stand freely and must not be jacked up.
Do not work on the vehicle.
Stay a safe distance away from the vehicle.
1
Calibrate the levelling system Workshop Manual '430115 Calibrating the levelling system'.
Concluding work
Work Procedure: 1
2
Carry out general concluding work for control unit programming as described in Workshop
Manual '9X00IN Basic instructions and procedure for control unit programming using the PIWIS
Tester'.
Enter the campaign in the Warranty and Maintenance booklet.
Warranty invoicing
Information
The specified working time was determined specifically for carrying out this campaign and may differ
from the working times published in the Labor Operation List in PIWIS.
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Technical Information
Scope:
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Working time:
Re-programming PASM control unit
Includes:
Connecting and disconnecting battery charger
Connecting and disconnecting PIWIS Tester
Reading out and erasing fault memories
Calibrating the levelling system
Labor time: 85 TU
Damage Code WH29 066 000 1
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. If a particular condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your authorized Porsche Dealer for the latest information
about whether a particular technical bulletin applies to your vehicle. Part numbers listed in these bulletins are for reference only. Always check with your authorized Porsche dealer to verify the current and
correct part numbers. 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.
© Porsche Cars North America, Inc.
2017© Porsche Cars North America, Inc.
AfterSales
Nov 20, 2017
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TSB/Document ID: 122-E7X5D-12
Replacement Service Bulletin Number:
MFR Communication Date: 2017-11-20
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: SUSPENSION
MFR Component System:
MFR Component Subsystem:
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