Service

Technical Information

40/13 ENU

9162
Only for Vehicles Manufactured in Production Plant Osnabrück: Malfunctions While
Enabling Functions in Steering-Column Switch (Steering Wheel Electronics) Control Unit
(40/13)

9

Information
This Technical Information replaces the TI dated September 4, 2013.
Changes/additions compared to the previous Technical Information:
•
Vehicle Type:

Part identifier and component designation corrected/added - was "94500 – Steering-column switch
control unit", now "91620 – Steering wheel electronics control unit”.

Boxster (981)/Boxster S (981)
Cayman (981)/Cayman S (981)

Model Year:

2013

Concerns:

Control unit for steering-column switch (also referred to as combined steering-column
module)/steering wheel electronics

Information:

Only for vehicles manufactured in production plant Osnabrück (VIN designation "K"):
Malfunctions can occur during coding when enabling one of the following functions
•
•
•
•

Cruise control,
On-board computer,
Multi-function steering wheel or
Heated steering wheel

Malfunctions can occur during coding in the steering-column switch (steering wheel electronics) control unit.
Action
Required:

Before enabling or coding a function such as "Cruise control" on an affected vehicle, the steering-column
switch (steering wheel electronics) control unit must be re-programmed.

Affected
Vehicles:

Only for vehicles with a VIN corresponding to production plant Osnabrück:

Tools:

Example of an affected VIN (letter “K” at position 11): WP0 XXX XX X D K X XXXXX
9818 - PIWIS Tester II with software version 12.600 (or higher) installed
Battery Charger/Power Supply - Suitable for AGM Type batteries, recommended current rating of 70A
fixed voltage 13.5V to 14.5V.

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Work
Procedure:
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 commencing work, 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 II and the vehicle
communication module (VCI). As a result, control unit programming may be aborted.



During control unit programming, always connect PIWIS Tester II to the vehicle communication module
(VCI) via the USB cable.

NOTICE
Control unit programming will be aborted if the vehicle key is not recognized
•

If the vehicle key is not recognized in vehicles with Porsche Entry & Drive, programming cannot be started
or will be interrupted.



Switch on the ignition using the original vehicle key. To do this, replace the original vehicle key in the
ignition lock with the plastic key fob if it was previously removed at the start of this procedure.
1

2

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Preliminary work:
1.1

Connect a battery charger or power supply, suitable for AGM type batteries, recommended
current rating of 70A fixed voltage 13.5V to 14.5V.

1.2

Switch on the ignition using the original vehicle key. To do this, replace the plastic vehicle key
in the ignition lock with the original key fob if it was not previously removed at the start of this
procedure.

1.3

9818 - PIWIS Tester II with software version 12.600 (or higher) installed must be
connected to the vehicle communication module (VCI) via the USB cable. Then, connect the
communication module to the vehicle and switch on the PIWIS Tester.

Re-programming steering wheel electronics control unit:

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Service

Technical Information

40/13 ENU

9162

9

Information
The procedure described here is based on the PIWIS Tester II software version 12.600.
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.
2.1

On the PIWIS Tester start screen, call up the  'Diagnostics' menu and select the relevant
vehicle type.
The diagnostic application is then started and the control unit selection screen is populated.

2.2

In the control unit selection screen ( 'Overview' menu), press •F7“ to call up the 
'Additional menu'.

2.3

When the question “Create Vehicle Analysis Log (VAL)?” appears, either press •F12“ to
create a VAL or press •F11“ if you do not want to create a VAL.

2.4

Press •F12“ to acknowledge the message informing you that campaigns for the vehicle are
stored in the PIWIS information system.

2.5

Select the  'Campaign' function and confirm your selection by pressing •F12“.
You are then prompted to enter a campaign number.

2.6

To enter the campaign number, click in the relevant text box so that the cursor starts to flash.

2.7

Enter the programming code T1Q8Q and press •Enter“ to confirm.
The text box turns blue.
Press •F12“ to start the guided programming sequence.
Read the information and follow the prompts by pressing •F12“.

2.8

3

Once programming/coding has been carried out successfully, press •F11“ to return to the
overview.

Subsequent work:
3.1

Re-teaching steering lock settings:
The teaching process is monitored in the Actual values/input signals menu in the powersteering control unit using PIWIS Tester II.
3.1.1

Teach steering lock settings:
 With the vehicle stationary and the engine at idle speed,
turn the steering wheel fully to the right and then to the left and hold it at full lock for
a short time.

3.1.2

If the steering lock settings cannot be taught, repeat the teaching process under
the following conditions:

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•

•

Calibrate the steering-angle sensor first.  Workshop Manual '456005
Initialising and calibrating steering-angle sensor'. This also clears the limit
stops.
Then re-teach the steering lock settings. Check the following while doing
this: If the second phase of the teaching process is reached (message
displayed on PIWIS Tester II), switch off the ignition for about 20 seconds.
Then switch the ignition on again. The steering lock settings are now re-taught
and the following message is displayed: Status of teaching process, left
and status of teaching process, right = taught while driving slowly,
teaching complete.

3.2

Read out and erase fault memories.

3.3

Disconnect the PIWIS Tester from the vehicle.

3.4

Switch off and disconnect the battery charger/power supply.

3.5

On vehicles with Porsche Entry & Drive, replace the original driver’s key in the ignition lock
with the control panel again.

Working time:

916225650: Programming steering wheel electronics control unit
(malfunction during enabling process)

Invoicing:

The work required is invoiced under the labor operation:
•

Labor time: 36 TU

91622565: Programming steering wheel electronics control unit (malfunction during
enabling process)

For invoicing and documentation using PQIS, specify “91620” as the fault location (FES5) and
“9735” as the damage category (SA4).
References:

 Workshop Manual '489025 Power-steering gear: Teaching steering lock settings'

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.
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