Continental Automotive Technologies 5WK49622 Keyless Car Entry User Manual Functional Description DPF I Key 2nd
Continental Automotive GmbH Keyless Car Entry Functional Description DPF I Key 2nd
Users Manual
SIEMENS AG SV I IC PE AS ID
Siemens VDO Automotive
FCC ID:KR55WK49622 IC:267T-5WK49622
I:\D_Plateforme_Nissan\2nd bundle\Key-fob project
folder\HomologationI:\POSTZULA\z1_Projekte\A_Aktuell\NISSAN\Nissan2ndBundle\FobKey\Technische_Doku_doc\Functional_De
scription_DPF-I-Key 2nd.doc Page 1of 5
User Manual / Functional Description
of the
Siemens VDO
Radio Frequency Transmitter
Type
5WK49609
5WK49618
5WK49622
SIEMENS AG SV I IC PE AS ID
Siemens VDO Automotive
FCC ID:KR55WK49622 IC:267T-5WK49622
I:\D_Plateforme_Nissan\2nd bundle\Key-fob project
folder\HomologationI:\POSTZULA\z1_Projekte\A_Aktuell\NISSAN\Nissan2ndBundle\FobKey\Technische_Doku_doc\Functional_De
scription_DPF-I-Key 2nd.doc Page 2of 5
Functional description of Nissan DPF I –key 2nd Bundle
This document gives an overview of the different device operation modes and the RF transmissions
performance of the key. In this document the device is referenced as "key", even if the mechanical
backup key might be separated from it.
For an overview of the electrical function blocks, please see the document "Block Diagram of
Nissan DPF I –key 2nd Bundle".
1. Operating modes
The key has three main operating modes which differ regarding of the signal transmitting with the
RF:
•· Immo Immobilizer transponder mode
•· RKE Remote key functionality
•· PASE Passive key functionality
Immobilizer Transponder mode
When the key is operating as an immobilizer transponder, the communication is done via a "contact
less interface" depending on a magnetic coupling. The transponder is the passive side of the link and
there is no RF transmission from it involved in any aspect.
Remote key functionality
This mode refers to use the key as a remote control unit to initiate actions on the vehicle such as
open or close door latches. RF transmission depends on a user activating (a button pressing) on the
key. During the button pressing the amount of telegrams are sent on the RF channel.
Short button press:
SIEMENS AG SV I IC PE AS ID
Siemens VDO Automotive
FCC ID:KR55WK49622 IC:267T-5WK49622
I:\D_Plateforme_Nissan\2nd bundle\Key-fob project
folder\HomologationI:\POSTZULA\z1_Projekte\A_Aktuell\NISSAN\Nissan2ndBundle\FobKey\Technische_Doku_doc\Functional_De
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A short valid button pressing results a sending of the minimum number of the RF telegrams, as
showed on the diagram.
Long button press:
If the duration of the button pressing extents the time required for transmitting the minimum amount
of RF telegrams, additional telegrams will be sent until the button is released or a timeout of 25s is
reached. This timeout function prevents the unintended transmission over the extended time periods
in case of a button was fixed.
Passive key functionality
For passive key operation no user action on the key side is required. The trigger is delivered by the
vehicle via an LF data telegram. When the key receive a valid LF message, it responds with two RF
telegrams and the inter telegram timing in this mode depends on the key configuration data (sort of
time slot concept).
2. RF parameters
For all RF transmission the following parameters apply:
US variant JP, Korea variant EU variant
Center frequency 315 MHz 314.85 MHz 433.92 MHz
Frequency accurracy ± 30 kHz ± 20 kHz ± 50 kHz
Frequency deviation ± 25 kHz nominal ± 25 kHz nominal ± 30 kHz nominal
RF modulation FSK FSK FSK
RF frame baudrate 2 kBd 2 kBd 2 kBd
Data coding Manchester Manchester Manchester
SIEMENS AG SV I IC PE AS ID
Siemens VDO Automotive
FCC ID:KR55WK49622 IC:267T-5WK49622
I:\D_Plateforme_Nissan\2nd bundle\Key-fob project
folder\HomologationI:\POSTZULA\z1_Projekte\A_Aktuell\NISSAN\Nissan2ndBundle\FobKey\Technische_Doku_doc\Functional_De
scription_DPF-I-Key 2nd.doc Page 4of 5
Button functions
The validation of the accurate frequency deviation and the measurement of the transmission function
of the key are implemented basing on RF test software. The graphic below shows the functionality of
the buttons.
First Button
press Second
Button
press
Third
Button
press
Fourth Button press
CW; frequency
defined by
register F1Cx
Fup Flow With every additional
button press switch
between Fup and Flow
CW; frequency
defined by
register F2Cx
Fmod Sweep
CW; frequency
defined by
register F3Cx
CW; frequency
defined by
register F4Cx
RESET: if "Lock"-and "Unlock"-button is pressed at the same time
Variants
5WK49609 EU Version 433.92 MHz
5WK49618 JP Version 314.85 MHz
5WK49622 US Version 315 MHz
Label Design US Variant
Siemens VDO
5WK49622
FCC ID: KR55WK49622
IC: 267T-5WK49622
Warning Statement:
NOTE
This device complies with part 15 of the FCC Rules and RSS-210. Operation is subject to the
following two conditions: (1) This device may not cause harmful interference, and (2) this device must
accept interference received, including interference that may cause undesired operation.
COUTION
Button
Lock
Button
Unlock
Button
Trunk
Button
Panic
SIEMENS AG SV I IC PE AS ID
Siemens VDO Automotive
FCC ID:KR55WK49622 IC:267T-5WK49622
I:\D_Plateforme_Nissan\2nd bundle\Key-fob project
folder\HomologationI:\POSTZULA\z1_Projekte\A_Aktuell\NISSAN\Nissan2ndBundle\FobKey\Technische_Doku_doc\Functional_De
scription_DPF-I-Key 2nd.doc Page 5of 5
Changes or modifications not expressly approved by the manufacturer could avoid the user's
authority to operate the equipment.