No. 116-22 Service Bulletin/Repair Instructions

Service
Technical Information
116/22 ENU
8274
8
Check Engine Warning Light Active/Fault Memory Entry "P26B100/00CB24" in the

Thermal Management Control Unit (TME): Re-Programming Control Unit (116/22)
Revision:
This bulletin replaces bulletin ATI Group 8 2215, dated May 31, 2022.
Vehicle Type:
Panamera 4 E-Hybrid (971) / Panamera 4 E-Hybrid Executive (971) / Panamera 4 E-Hybrid

Sport Turismo (971) / Panamera 4S E-Hybrid (971) / Panamera 4S E-Hybrid Executive (971)

/ Panamera 4S E-Hybrid Sport Turismo (971) / Panamera Turbo S E-Hybrid (971) / Panamera

Turbo S E-Hybrid Executive (971) / Panamera Turbo S E-Hybrid Sport Turismo (971)
Model Year:
As of 2019 up to 2021
Country /

Market:
USA (C02)
Concerns:
Thermal management control unit (TME)
Information:
•

•
Customers complain that the Check Engine pilot light is on in the instrument cluster

The fault memory entry “Directional-control valve for high-temperature circuit – function implausible

(P26B100/00CB24)” is set in the thermal management control unit (TME)
Action required: In the event of a customer complaint and if a fault memory entry is set in the thermal management control

unit (TME), the software version of the thermal management control unit (TME) must be checked and

re-programmed if necessary using the PIWIS Tester with PIWIS Tester test software version 40.900.050

(or higher) installed.
Required tools

Tool:
•
•
Battery charger with a current rating of at least 90 A, e.g. VAS 5908 battery charger 90A. For

further information about the battery chargers to be used, see the corresponding Workshop Manual.

 Workshop Manual '270689 Charging vehicle electrical system battery'

9900 - PIWIS Tester 3 with PIWIS Tester test software version 40.900.050 (or higher) installed
Preparatory work

NOTICE

Fault entry in the fault memory or control unit programming aborted, as the case may be, 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 with a charging current of at least 90 A to

the jump-start terminals in the engine compartment.
AfterSales
Aug 5, 2022

Page 1 of 4
8
Service
Technical Information
ENU 116/22
8274
NOTICE

Control unit programming will be aborted if the Wi-Fi connection is unstable.

•
An unstable Wi-Fi connection can interrupt communication between the PIWIS Tester II and the vehicle

communication module (VCI). As a result, control unit programming may be aborted.

During control unit programming, always connect the PIWIS Tester to the vehicle communication module

(VCI) via the USB cable.

NOTICE
Control unit programming will be aborted if the driver’s key is not detected.

•
If the driver’s key is not detected in the vehicle, programming cannot be started or will be interrupted.

Place the driver’s key with the back facing down into the front left storage compartment in the center

console to ensure a continuous radio link between the vehicle and the driver‘s key.
Work Procedure: 1
Carry out general preliminary work for control unit programming as described in  Workshop

Manual '9X00IN Basic instructions and procedure for control unit programming – section on

“Preliminary work”'.
Check software version of the thermal management control unit (TME)

Work Procedure: 1
Check software version of the thermal management control unit (TME).

1.1
Select ‘thermal management control unit (TME)’.
1.2
Select the ‘Extended identifications’ menu.
1.3
Checking software version of ‘thermal management control unit’ (TME).

1.3.1
If the software version is '0305' (or higher), the TME control unit is already

up-to-date, and the fault must otherwise be found and corrected. Continue with 

Technical Information '9X00IN Subsequent work'.
1.3.2
If the software version is less than '0305', re-program the thermal management

control unit (TME).  Technical Information '9X00IN Re-programming thermal

management control unit (TME)'
Re-programming thermal management control unit (TME)

Information

The procedure described here is based on the PIWIS Tester 3 software version 40.900.050.

The PIWIS Tester instructions take precedence and in the event of a discrepancy, these are the

instructions that must be followed. Deviations may occur with later software versions, for example.
Aug 5, 2022

Page 2 of 4
AfterSales
Service
Technical Information
Work Procedure: 1
116/22 ENU
8274
8
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'.

For specific information on control unit programming during this campaign, see table

below.
Required PIWIS Tester software version:
40.900.050 (or higher)
Type of control unit programming:
Control unit programming using the 'Campaign'

function in the additional menu on the PIWIS

Tester by entering a programming code.
Programming code:
G2T8E
Programming sequence:
Read and follow the information and instructions

on the PIWIS Tester during the guided

programming sequence.

Do not interrupt programming and coding.

A backup documentation process for the

re-programmed software versions starts as soon

as programming and coding is complete.
Programming time (approx):
3 minutes
Software version programmed during this

campaign:
•
Thermal management control unit (TME):

0305
Following control unit programming, the software

version can be read out from the relevant control

unit in the  ‘Extended identifications’ menu using

the PIWIS Tester.

Procedure in the event of error messages

appearing during the programming sequence:
 Workshop Manual '9X00IN Basic instructions
Procedure in the event of abnormal termination

of control unit programming:
Repeat control unit programming by restarting

programming.
and procedure for control unit programming using

the PIWIS Tester - section on “Troubleshooting”'.
AfterSales
Aug 5, 2022

Page 3 of 4
8
Service
Technical Information
ENU 116/22
8274
Concluding work

Work Procedure: 1
Carry out general rework for control unit programming as described in  Workshop Manual '9X00IN

Basic instructions and procedure for control unit programming using the PIWIS Tester - section on

“Rework”'.
Invoicing

For documentation and invoicing in a warranty case, state the work items required depending on the

scope of work and the specified PCSS encryption in the warranty claim:

APOS
Labor operation
19290101
Checking thermal management control unit
19292551
Programming thermal management control unit
I No.
PCSS encryption:

Location (FES5)
82740
Directional-control valve
Damage type (SA4)
1611
does not function
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.
© 2022 Porsche Cars North America, Inc.
Aug 5, 2022

Page 4 of 4
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