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.
Change Overview
Revision

Date

Change

0

01/23/2026

•

First publication

1

02/03/2026

•

Update to Re-programming
control unit for assistance
systems, work procedure,
step 2

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

USA (C02)
Canada (C36)

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Service
ASB2

Affected
Vehicles:

ENU

Technical Information

2025

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

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
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 5⇒ 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

Feb 3, 2026
Page 2 of 7

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)

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Technical Information

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2025

ENU

ASB2

4

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.

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.

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ASB2

ENU

Technical Information

2025

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

6

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”.

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

Feb 3, 2026
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Enter the campaign in the warranty and maintenance logbook.

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Technical Information

2025

ENU

ASB2

4

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
•

Panamera (YAA)
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)

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ASB2

ENU

Technical Information

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 4:

Re-programming control unit for assistance systems
Relevant for
•

Cayenne (9YA, 9YB) Gen.2
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: 90 TU

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
⇒

Feb 3, 2026
Page 6 of 7

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Service

Technical Information
Scope 8:

2025

ENU

ASB2

4

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.

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