122-B9L7S-07

Service
Technical Information
31/18
ENU
5789
5
Symptom - Body Exterior - Alarm System (I-no. 7AC/7AE/7AH/7AK/7AL) is Triggered
Spontaneously: Re-coding rear-end electronics control unit (SY 31/18)
Model Line:
Panamera (971)/Cayenne (9YA)
Model Year:
As of 2017 up to 2019
Equipment:
Alarm system (I-no. 7AC/7AE/7AH/7AK/7AL)
Subject:
Control unit for rear-end electronics
Symptom:
The alarm system is triggered spontaneously (for no apparent reason).
Cause:
The mobile phone antenna (GSM) signals can be picked up by the interior surveillance system and result in
spontaneous triggering of the alarm system.
Remedial
Action:
Re-code the rear-end electronics control unit, see  Workshop Manual '578955 Replacing control unit
for rear-end electronics'.
Date of
Introduction:
Adapted software has been used during production since January 2, 2018.
Tools:
•
•
Invoicing:
The work involved is invoiced under the labor operation:
9900 - PIWIS Tester 3 with software version 37.100.020 (or higher) installed
Battery charger with a current rating of at least 90 A.
APOS
Labor operation
57895500
Replacing rear-end electronics
I No.
For invoicing and documentation using PQIS, enter the following coding:
Location (FES5)
96850
Interior surveillance sensor
Damage type (SA4)
1614
Function not as specified
References:
 Workshop Manual '578955 Replacing control unit for rear-end electronics'
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.
© 2018 Porsche Cars North America, Inc.
AfterSales
June 6, 2018
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