Service

Technical Information

165/23 ENU WPQ2

9

WPQ2 – Re-Coding Loudspeaker Amplifier (Bose) (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 2022 up to 2023

Model Line:

911 (992)

Equipment:

BOSE Surround Sound System (M-no. 9VL)

Concerns:

Loudspeaker amplifier (Bose)

Cause:

After carrying out the WPJ6 workshop campaign, there may be sound quality complaints in the
affected vehicles due to an incorrect coding rule.

Action:

Re-code the loudspeaker amplifier (Bose) control unit with a corrected data record.
Minimum requirement: Release 42.250.050

Affected
Vehicles:

Only vehicles assigned to the campaign (see also PCSS Vehicle Information).

Required tools
Tool:

•
•

P90999 - PIWIS Tester 4
Battery charger with a current rating of at least 90 A, e.g., VAS 5908 90-A battery charger. For
further information about the battery chargers to be used, see the corresponding Workshop Manual.
 Workshop Manual '270689 Charging battery/vehicle electrical system'

Re-coding loudspeaker amplifier (Bose) control unit
Work Procedure: 1

Re-code the loudspeaker amplifier (Bose) control unit.
The basic procedure to be followed for coding the control unit is described in the Workshop Manual:

 Workshop Manual '270689 Basic instructions and procedure for control unit programming using
the PIWIS Tester'

AfterSales

Jan 19, 2024
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9

Service

Technical Information

ENU 165/23

WPQ2

Specific information on control unit coding during this campaign
Required PIWIS Tester software release:

42.250.050 (or higher)

Type of control unit coding:

Control unit coding using the ‘Automatic coding’
function for the control unit:
Loudspeaker amplifier control unit –
‘Coding/programming’ menu – ‘Automatic
coding’ function.
Read and follow the information and instructions
on the PIWIS Tester during the guided coding
sequence.

Coding sequence:

Do not interrupt coding.
When coding is complete, the message ‘Coding has
been completed successfully’ is displayed and a tick
appears in the “Status” box.
Procedure if control unit coding is not
successful:
2

3

Repeat control unit coding.

Read out and delete all control unit error memories.
2.1

In the control unit selection (‘Overview menu’) press •F7“ to call up the additional menu.

2.2

Select the function “Read all error memories and delete if necessary” and press •F12“
(‘Next’) to confirm.

Enter the campaign in the Warranty and Maintenance logbook.

Warranty processing
Information
The specified labor time was determined specifically for carrying out this campaign and includes all
necessary preliminary work and rework. The labor time may differ from the labor times published in the
Labor Operation List in PCSS.

Jan 19, 2024
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Service

Technical Information
Scope 1:

165/23 ENU WPQ2

9

Re-coding loudspeaker amplifier (Bose) control unit
Labor time:
Re-coding loudspeaker amplifier (Bose) control unit
Includes:
Connecting and disconnecting battery charger
Connecting and disconnecting PIWIS Tester
Reading out and deleting fault memories

Labor time: 25 TU

 Damage Number WPQ2 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. 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.

© 2024 Porsche Cars North America, Inc.

AfterSales

Jan 19, 2024
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