No. 37-22

Service
Technical Information
37/22
ENU
WNB4
9
WNB4 - Replacing Interior Surveillance Sensor (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 2021
Model Line:
Taycan (Y1A)
Taycan Cross Turismo (Y1B)
Taycan Sport Turismo (Y1C)
Concerns:
Interior surveillance sensor
Information:
There is a possibility that the main antenna (LTE reception) of the communication control unit
on the affected vehicles can interfere with the function of the adjacent sensor for interior
surveillance by means of electromagnetic signals in the area of the mirror base.
If this happens, the alarm system can be triggered unwarranted by the interior surveillance system.
Action required: Read out the hardware part number of the interior surveillance sensor and depending on the result of the
check, either:
•
Re-coding rear-end electronics control unit
or
•
Affected
Vehicles:
Replacing interior surveillance sensor and re-coding rear-end electronics control unit
Only the vehicles assigned to the campaign (see also PCSS Vehicle Information).
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Installation
Position:
Interior surveillance sensor installation position
Required tools
Tool:
9900 - PIWIS Tester 3 with PIWIS Tester software version 40.795.105 (or higher) installed
Battery charger with a current rating of at least 90 A, e.g. VAS 5908 battery charger 90A
•
•
Parts required
Parts Info:
Part No.
Designation
Number
V04015001GS
 Alarm system sensor
1 ea.
Checking hardware part number of interior surveillance sensor
Work Procedure: 1
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Connect a suitable battery charger, e.g. battery charger 90A, to the jump-start terminals in the
front luggage compartment and switch it on.
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2
Position the driver's key with the back facing
forward upright between the holding struts in the rear
drinks holder (emergency start tray) to guarantee a
permanent radio link between the vehicle and remote
control  Emergency start tray.
3
9900 - Connect PIWIS Tester 3 to the vehicle
communication interface module (VCI) via the USB
cable, then connect the communication module to
the vehicle and switch on the PIWIS Tester.
4
Establish readiness for operation (switch on ignition).
5
On the PIWIS Tester start screen, call up the 'Diagnostics' application.
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Emergency start tray
The vehicle type is then read out, the diagnostic application is started and the control unit selection
screen is populated.
6
Select the control unit for Rear-end electronics in the overview.
7
Select the 'Incremented identification' menu and
read out the hardware part number of the interior
surveillance sensor.  Reading out control unit
Reading out control unit
Assessment
Action
( )
The Porsche part number "Sensors
for alarm system (in roof console)"
is 5Q0.951.172.A/software version
0403.
(✗)
Replace interior surveillance sensor and re-code it via
The Porsche part number “Sensors
the rear-end electronics control unit.
for alarm system (in roof console)” is
5Q0.951.172/software version 0316. For instructions, see:  Technical Information
'968555 Replace Interior surveillance sensor'
Re-code interior surveillance sensor via the rear-end
electronics control unit.
For instructions, see:  Workshop Manual '968555
Replacing interior surveillance sensor'
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Replace Interior surveillance sensor
Work Procedure: 1
Replace Interior surveillance sensor.
For instructions, see:  Workshop Manual '968519 Removing and installing interior surveillance
sensor'
2
Re-code interior surveillance sensor via the rear-end electronics control unit.
For instructions, see:  Workshop Manual '968555 Replace Interior surveillance sensor'
3
Enter the campaign in the Guarantee and Maintenance booklet.
Warranty processing
Information
The specified working times were determined specifically for carrying out this campaign and include all
necessary preliminary and subsequent work.
The working time may differ from the working time published in the Labor Operation List in the PCSS.
Scope 1:
Checking interior surveillance sensor and coding rear-end electronics control unit
Labor time:
Checking interior surveillance sensor and coding rear-end electronics
control unit
Includes:
Connecting and disconnecting battery charger
Connecting and disconnecting PIWIS Tester
Checking hardware part number of interior surveillance
sensor
Re-coding rear-end electronics control unit
 Damage code WNB4 066 000 1
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AfterSales
Labor time: 36 TU
Service
Technical Information
Scope 2:
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Checking and replacing interior surveillance sensor and coding rear-end electronics control
unit
Labor time:
Labor time: 56 TU
Checking and replacing interior surveillance sensor and coding rear-end
electronics control unit
Includes:
Connecting and disconnecting battery charger
Connecting and disconnecting PIWIS Tester
Checking hardware part number of interior surveillance
sensor
Replace Interior surveillance sensor
Re-coding rear-end electronics control unit
Parts required:
V04015001GS
Alarm system sensor
1 ea.
 WNB4 066 000 2
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.
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