122-V3G9L-01

9
Bulletin #: 1815
Advanced Technical Information
Part ID: 9662
Replacement Keys Disallow KESSY Function
Vehicles Affected
Model
Model Year
Model Type
VIN Range
Vehicle-Specific Equipment
Panamera
2017-on
971
n/a
n/a
Revision History
Revision
Release Date
Changes
1
December 12, 2018
Part numbers and SBT numbers were
added
0
November 19, 2018
Initial Release
Concern
	The customer complains that particular KESSY features (usually keyless entry and keyless locking) do not function on at least one remote
key. The key still functions for remote unlocking and locking. In other
words, the vehicle functions normally if the customer presses the
unlock or lock buttons on the remote key. The workshop confirms this
behavior.
	This issue is found on replacement keys and not on the original keys
from the factory. The nonfunctioning replacement key is marked with
the model designation “PK1”. (See figure 1.) A fully functional key
with have the model designation “PK3”. (See figure 2.)
Figure 1
Technical Background
	There is a mismatch between parts distribution and stock coding for
vehicles with KESSY. PK1 keys will not necessarily work with a KESSY
system. This symptom will be persistent (not intermittent). Only PK3
keys will have KESSY function with all typical coding combinations.
PK1 and PK3 keys have different part numbers. In the parts catalog,
there is no distinction made between KESSY and non-KESSY keys.
Figure 2
AfterSales
December 12, 2018
Page 1 of 2
Bulletin #: 1815
Advanced Technical Information
Part ID: 9662
9
Service Information
Order PK3 keys using this part number: 00004399050.
Please note: A single vehicle should not have a mix of key models. Ensure that all keys assigned to the vehicle are 		
PK3.
Search Items
KESSY, key fob, parts, PET, handheld transmitter, passive entry
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.
6000009050
AfterSales
December 12, 2018
Page 2 of 2