Service

Technical Information

200/24 ENU

WRS1

2

WRS1 - Checking High-Voltage Battery and Replacing Cell Block Module if necessary
(Workshop Campaign)
Model Line:

Taycan (Y1A / Y1B / Y1C)

Model Year:

As of 2020 up to 2024

Concerns:

High-voltage battery

Cause:

The required, optimized software for the high-voltage battery control unit as part of
ARB6/ARB7/WRS0 is currently not available to update all affected vehicles immediately.
Therefore, a check of the battery status using an interim action is necessary until this on-board
diagnostics software is available.
As part of the interim action, a vehicle analysis log (VAL) is created at the workshop visit for offline
vehicles without activated online functions and corresponding data transmission in order to analyze cell
modules based on the VAL data analysis. Valid (complete) workshop and OTA VALs are taken into account
for the evaluation.

Action:

Check cell modules via vehicle analysis log (PCSS).
•
•
•

Population 1 – customer vehicles with an existing, valid VAL – create 1x VAL (scope 1)
Population 2 – customer vehicles without an existing, valid VAL – create 3x VAL (scope 2)
Population 3 – new vehicles without an existing, valid VAL – create 3x VAL (scope 3)

Information
An evaluation of the state of the module cell block of the Affected Vehicles is carried out by the PAG
internal analysis of the VALs.
On the basis of the transmitted VALs, PAG evaluates the state of the module cell block for the respective
vehicle by using an analysis algorithm.
The analysis result and the necessary further steps for each vehicle are displayed in the PCSS approx.
30-45 minutes after the VAL has been uploaded.
Please also note the following information:
•

Customer is contacted by the relevant Porsche Center or by the importer using the ARB6
customer letter.

•

Customer arranges an appointment with the Porsche Center for carrying out campaign ARB6.

•

In the event of a negative test result, the assignment to the affected scope of the recall
campaign ARB5 and the accompanying campaigns "Replacing module cell block" takes
place once a day and is also displayed in the PCSS.

•

In the event of a positive test result (no conspicuous modules), the interim action is completed
and the warranty invoicing is made via the campaign number WRS1 under scopes 1-3. The ARB6
campaign remains open after performing the WRS1 until the final on-board diagnostics is
available (Q1/2025). The vehicle can then be handed over to the customer.

AfterSales

Dec 4, 2024
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2

Service

Affected
Vehicles:

Technical Information

ENU 200/24

WRS1
•

This test (WRS1) is valid for 60 days.

•

If the software is not available, the high-voltage battery must be rechecked every 60 days
at the latest. A renewed workshop campaign similar to WRS1 will be published in good time for
processing.

•

As soon as the software is available, the final action (Q1/2025) must be carried out in accordance
with the ARB6 recall campaign.

•

When the software or the on-board diagnostics is available, the WRS1 campaign is deactivated or closed.

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

Required tools
Tools:

•
•

Battery charger with a current rating of at least 90 A, e.g., VAS 5908 battery charger 90 A
P90999 - P90999 - PIWIS Tester 4

Checking high-voltage battery – population 1 (customer vehicles with an existing, valid VAL)
Work
Procedure:

Review high-voltage battery flow chart
Creating Vehicle Analysis Log (VAL) in workshop
Upload VAL via the data return function
↓
VAL is analyzed within 30-45 minutes.
Reply to PAG about analysis result via PCSS display in the “Campaigns” area by pressing the
“battery with magnifying glass” icon symbol (see table on PCSS menu prompt).
↓
OK
↓

Not OK
↓

End of action
Invoicing for Scope 1

Invoicing for VAL check via WRS1 scope 1.
Replacing module via ARB5 recall/
and accompanying campaigns
“Replacing cell block module”

If the final action "Re-programming
ARB6 BMCe software" is not available,
the high-voltage battery must be
rechecked by means of a VAL test
after 60 days at the latest.

Dec 4, 2024
Page 2 of 10

Please submit the warranty claim for the campaign
in WWS via the assigned scope.
After replacing module:
If the final action "Re-programming ARB6
BMCe software" is not available, the
high-voltage battery must be rechecked by
means of a VAL test after 60 days at the latest.

AfterSales

Service

Technical Information

200/24 ENU

WRS1

1

Open the front cover and connect a suitable battery charger, e.g., 90 A battery charger, to the
jump-start terminals and switch it on.

2

Open the door and position the driver’s key with the
back facing forward upright between the holding
strips in the rear drinks holder (emergency start tray)
to ensure a permanent radio link between the vehicle
and remote control.

3

Establish readiness for operation (switch on ignition).

2

Information
An active Internet connection with the PIWIS Tester must
be ensured. To log in using the PIWIS Tester, the techEmergency start tray
nician is required.
The PIWIS Tester must not be charged using the cigarette lighter!
4

Connect the PIWIS Tester to the vehicle communication module (VCI) via the USB cable. Then
connect the communication module to the vehicle and switch on the PIWIS Tester.

5

Create a Vehicle Analysis Log (VAL).
Mark the Vehicle Analysis Log you have just created with the attribute “Extra VAL” and return it using
the PIWIS Tester after completion.

Feedback on analysis results by PAG takes place via PCSS after approx. 30-45 minutes.
•
•

•

The data analysis yields a positive result (green PCSS display): The vehicle can then be handed
over to the customer. Continue to Warranty Processing, Scope 1.
The data analysis yields a negative result (red PCSS display): In rare cases, it may be necessary to
replace the cell block module. If this is the case, the VIN in the ARB5 campaign is transferred to one
of the accompanying campaigns.
VAL faulty/insufficient (yellow or grey PCSS display): In very rare cases, additional VALs may be
required.

AfterSales

Dec 4, 2024
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WRS1

Technical Information

ENU 200/24

Illustration

PCSS menu prompt
1. Vehicle search via VIN

PCSS vehicle search
2. Confirming “Battery with magnifying glass”
icon under campaigns in WRS1

Display of campaign in PCSS
3. VAL analysis result is displayed via pop-up
window

Pop-up display window

Dec 4, 2024
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AfterSales

Service

Technical Information

200/24 ENU

WRS1

2

- Green indicator: The test result is “positive”.
Cell modules are OK.

"Green" display result
- Yellow indicator: A Vehicle Analysis Log (VAL)
must be created

"Yellow" display result

AfterSales

Dec 4, 2024
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Technical Information

ENU 200/24

WRS1

- Red indicator: The test result is “negative”.
One or more modules must be replaced.

"Red" display result
- Grey indicator: There are no valid VALs. Additional VALs must be created according to the
following procedure.
1. Creating and uploading a VAL
2. Charge up to 100% SoC via AC charge port.
3. Create and upload a second VAL after 6 hours
of downtime.