No. ASB2 Service Bulletin/Repair Instructions

Service
Technical Information
2025
ENU
ASB2
4
ASB2 - Re-Programming Assistance System Control Unit (Stop Delivery/Recall 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 2019 up to 2025
Model Line:
911 (992)

Panamera (YAA)

Taycan (Y1A, Y1B, Y1C)

Cayenne (9YA, 9YB)
Country /

Market:
•

•
Equipment:
Park Assist assistance systems incl. Surround View (M-No. KA6)
Concerns:
Control unit for assistance systems
Information:
In rare cases, one or more surround view cameras may fail on the affected vehicles due to a fault in

communication within the surround view software network.

As a result, the corresponding camera area in the PCM is displayed as a black sub-area with a crossed-out

camera symbol.
Action:
Re-program the control unit for assistance systems with the latest PIWIS Tester software release.

Minimum requirement: Version 43.800.030
Affected

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

•

•

•

•

•

•
USA (C02)

Canada (C36)
Scope 1: Re-programming assistance systems control unit – valid for Panamera (YAA)

Scope 2: Re-programming assistance systems control unit – valid for 911 (992) Gen.2 model year

2025

Scope 3: Re-programming assistance systems control unit – valid for Taycan (Y1A, Y1B, Y1C)

Scope 4: Re-programming assistance systems control unit – valid for Cayenne (9YA, 9YB) Gen.2

NOT YET Available - Scope 5: Re-programming assistance systems control unit – valid for 911 (992)

Gen.1 model year 2020 to 2025

NOT YET Available - Scope 6: Re-programming assistance systems control unit – valid for Cayenne

(9YA, 9YB) Gen.1
AfterSales
Jan 23, 2026

Page 1 of 6
4
Service

ASB2
ENU
•

•
Technical Information
2025
Scope 7: Update as part of WRX1 – valid for Cayenne (9YA, 9YB) Gen.2 model year 2024 with the

open WRX1 campaign

Scope 8: Check required software release – valid for vehicles for which the software is already at the

target status
Required tools

Tools:
•

•
P90999 - P90999 - Porsche Tester 4

Battery charger with a current rating of at least 90 A and a current and voltage-controlled charge map

for lithium starter batteries, e.g. VAS 5908 battery charger 90 A
Re-programming control unit for assistance systems

Work Procedure: 1
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 '
2
Only valid for the vehicles with the assigned Scope 7 – Update to software network VR14 as part of

workshop campaign WRX1, continue with Step 8 ⇒ and then invoice Scope 7 ⇒ Technical Information

'9X00IN Warranty processing'
3
Check required software release:

Specific information on required software release for each model line and model year
Jan 23, 2026

Page 2 of 6
Model line
Model year
Required software release:
Taycan (J1-I)
2020 – 2024
0385 (or higher)
Taycan (J1-II)
2025
0511 (or higher)
911 (992-I)
2020 – 2025
0385 (or higher)
911 (992-II)
2025
0511 (or higher)
Cayenne (E3-I)
2019 – 2023
0385 (or higher)
Cayenne (E3-II)
2024 - 2025
0511 (or higher)
Panamera (G3-I)
2024 - 2025
0511 (or higher)
3.1
Open the control unit for assistance systems in the Porsche Tester overview menu.
3.2
Read out "Extended identification" software release in the menu.
3.3
If the read-out software release corresponds to the required software release (see table

"Specific information on target software release for each model line and model year"), continue

with Step 8 ⇒ and then Scope 8 ⇒ Technical Information '9X00IN invoice warranty processing'
3.4
If the read-out software version of the required software release (see table "Specific information

on required software release for each model line and model year") does not comply, continue

with Step 4.
AfterSales
Service
Technical Information

4
2025
ENU
ASB2
4
Re-program control unit for assistance systems.

For specific information on control unit programming during this campaign, see the table below.
Required PIWIS Tester software release:
43.800.030 (or higher)
Type of control unit programming:
Control unit programming using the “Automatic

programming” function in the control unit for

assistance systems.
Programming sequence:
Read and follow the information and instructions

on the PIWIS Tester during the guided

programming sequence.

Do not interrupt the programming and coding

process.

A backup documentation process for the

re-programmed software releases starts as soon

as programming and coding is complete.
Programming time (up to):
up to 90 minutes
Software release programmed during this campaign:
See table "Specific information on required

software release for each model line and model

year"

Following control unit programming, the software

release can be read out from the control unit for

assistance systems in the 'Extended identifications' menu using the PIWIS Tester.
Procedure if error messages appear during

programming sequence:
⇒ Workshop Manual '9X00IN Basic instructions
Procedure in the event of a termination in the control

unit programming:
Repeat control unit programming by restarting

programming.
5
and procedure for control unit programming using

the PIWIS Tester'.
Rework assistance systems.

5.1
Select assistance systems control unit.
5.2
Select “Drive link checks”.
AfterSales
Jan 23, 2026

Page 3 of 6
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Service

ASB2
ENU
6
Technical Information
2025
5.3
Perform the routine "Coding step 2". After performing "Coding step 2", "Routine Results: 1"

indicates the routine was successful.
5.4
Wait 20 seconds.
5.5
Perform the routine “Front camera, download calibration result”. After performing "Front

camera, download calibration result", "Routine Results: 1" indicates the routine was successful.
Read out and delete all control units fault memory.

6.1
In the control unit selection (‘Overview’ menu) press •F7“ to call up the Additional menu.
6.2
Select the function “Read all fault memories and delete if necessary” and press •F12“ (‘Next’)

to confirm.

Information

If control units are found to have faults that are not caused by control unit programming,

they must first be located and corrected. This work cannot be invoiced under the workshop

campaign number.
7
For vehicles in Scope 1, 2, 3, 4:: Press •F3“ to start the integration test in the control unit selection.

All affected control units should now be successfully programmed or checked in the control unit

overview and their status.

There must be no composite damage! Optional control unit updates should be ignored.

Information

If a deviation in the integration test is still indicated despite the programming carried out, this must be

repeated. If the deviation persists, contact Technical Support.
8
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 and subsequent rework.

The labor time may differ from the working times published in the Labor Times in the PCSS.

Scope 1:
Re-programming control unit for assistance systems

Relevant for

•
Jan 23, 2026

Page 4 of 6
Panamera (YAA)
AfterSales
Service
Technical Information
2025
ENU
ASB2
4
Labor time:

Re-programming control unit for assistance systems

Includes:

Connecting and disconnecting battery charger

Connecting and disconnecting PIWIS Tester

Rework assistance systems

Reading out and deleting fault memories
Labor time: 86 TU
Þ Damage code ASB2 099 000 1

⇒

Scope 2:
Re-programming control unit for assistance systems

Relevant for

•
911 (992) Gen.2 Model year 2025

Labor time:

Re-programming control unit for assistance systems

Includes:

Connecting and disconnecting battery charger

Connecting and disconnecting PIWIS Tester

Rework assistance systems

Reading out and deleting fault memories
Labor time: 89 TU
Þ Damage code ASB2 099 000 1

⇒

Scope 3:
Re-programming control unit for assistance systems

Relevant for

•
Taycan (Y1A, Y1B, Y1C)

Labor time:

Re-programming control unit for assistance systems

Includes:

Connecting and disconnecting battery charger

Connecting and disconnecting PIWIS Tester

Rework assistance systems

Reading out and deleting fault memories
Labor time: 89 TU
Þ Damage code ASB2 099 000 1

⇒

Scope 4:
Re-programming control unit for assistance systems

Relevant for

•
Cayenne (9YA, 9YB) Gen.2
AfterSales
Jan 23, 2026

Page 5 of 6
4
Service

ASB2
ENU
Technical Information
2025
Labor time:

Labor time: 90 TU
Re-programming control unit for assistance systems

Includes:

Connecting and disconnecting battery charger

Connecting and disconnecting PIWIS Tester

Rework assistance systems

Reading out and deleting fault memories

Þ Damage code ASB2 099 000 1

⇒

Scopes 5 and 6: Re-programming control unit for assistance systems

Not valid for this vehicle

Scope 7:
Update as part of WRX1

Relevant for

•
Cayenne (9YA, 9YB) Gen.2 Model year 2024 with the open WRX1 campaign

Labor time:

Update as part of WRX1

Includes:
Labor time: 16 TU
Þ Damage code ASB2 099 000 1

⇒

Scope 8:
Checking required software release

Relevant for

•
Vehicles for which the software is already at the target status

Labor time:

Checking required software release

Includes:
Labor time: 16 TU
Þ Damage code ASB2 099 000 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.
© 2026 Porsche Cars North America, Inc.
Jan 23, 2026

Page 6 of 6
AfterSales

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