HELLA and KGaA 10176 Inductive Transmitter for Keyless Entry User Manual UserMan

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Document ID	1142736
Application ID	7wwZ3LMHWdfZyti5qfXDgw==
Document Description	UserMan
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	101.53kB (1269174 bits)
Date Submitted	2009-07-22 00:00:00
Date Available	2009-07-22 00:00:00
Creation Date	2009-05-20 14:34:23
Producing Software	Acrobat Distiller 7.0 (Windows)
Document Lastmod	2009-05-20 14:34:23
Document Title	Microsoft PowerPoint - Kessy PQ35GP_Kessy-Function-and-Blockdiagram.ppt
Document Creator	PScript5.dll Version 5.2
Document Author:	hollhe1

Hella Kessy for
Volkswagen
ECU, LF-Antennas, UID
5ZA 010 176 – 00
Confidential.The contents may only be passed on, used or made known with our express permission. All rights reserved.
May 20, 2009
Hella Kessy for Volkswagen
Functional Description for Vehicle Application, Hella Carbody Components
Standard version
Keyless Entry and Start System
with 5ZA 010 176 - 00
outside detection
outside rear
detection
inside detection
appr. 180cm
trunk
separation
outside detection
appr. 180cm
Kessy ECU 5ZA 010 176 - 00
3 interior LF antennas
3 exterior LF antennas
Confidential.The contents may only be passed on, used or made known with our express permission. All rights reserved.
May 20, 2009
Hella Kessy for Volkswagen
Functional Description of Procedure with 5ZA 010 176 – 00
Keyless Entry and Start System
Start:
A Person with the UID inside of the vehicle is
pressing the Start-Stop-Switch. The StartStop-Switch activates the complete Passive
Start protocol:
outside detection
outside rear
detection
inside detection
appr. 180cm
trunk
separation
outside detection
appr. 180cm
Kessy ECU 5ZA 010 176 - 00
The interior antenna IN2 is transmitting the
LF Data and a carrier signal, which can be
recognized and judged by quantity (RSSImeasurement) by the UID. The other two
interior antennas IN1 and TRUNK transmit
two additional carrier signals sequential.
If the magnetic field strength of one of these
transmits is high enough (a certain border is
reached) then the UID authenticates the
system to start the vehicle.
If the magnetic field strength of all antenna
transmits are too low (the field strength
border is not reached, maybe the UID is
laying outside or is held 10cm outside the
vehicle) the car won’t start.
3 interior LF antennas
3 exterior LF antennas
Confidential.The contents may only be passed on, used or made known with our express permission. All rights reserved.
May 20, 2009
Hella Kessy for Volkswagen
Functional Description of Procedure with 5ZA 010 176 – 00
Keyless Entry and Start System
Entry:
A Person with the UID nears to the locked
vehicle. If he graps the door handle a
capacitive unlock sensor is activated and the
complete Passive Entry Protocol is started:
outside detection
outside rear
detection
inside detection
appr. 180cm
trunk
separation
outside detection
appr. 180cm
Kessy ECU 5ZA 010 176 - 00
3 interior LF antennas
3 exterior LF antennas
The door handle antenna is transmitting LF
data and a carrier signal, which can be
recognized and judged by quantity (RSSImeasurement) by the UID.
If the magnetic field strength is high enough
(a certain border is reached) the UID stays
“awake” for additional LF communication by
the other antennas driven sequentially.
The additional LF communication guaranties
the functionality, that only the valid key
OUTSIDE the vehicle authenticates the
system to unlock the car passively.
If the magnetic field strength is not high
enough (e.g. the UID is too far away from the
vehicle, the border is not reached), the UID
shuts down again and waits for the next LF
Data. The vehicle is still locked.
Confidential.The contents may only be passed on, used or made known with our express permission. All rights reserved.
May 20, 2009
Hella Kessy for Volkswagen
Functional Description of Procedure, Hella Devices for Passive Entry and Start
Keyless
Entry and
Start
System
INTERIOR LF antenna
INTERIOR LF antenna
INTERIOR LF antenna
Electronic Control Unit
EXTERIOR LF antenna
5ZA 010 176 – 00
EXTERIOR LF antenna
ST
-fo
TE
transmitting frequency
f = 125kHz
in
Body
Control
Module
cu
!!!
EXTERIOR LF antenna
with integrated RF - Receiver
transmitting frequency
f = 315MHz or 433MHz
Confidential.The contents may only be passed on, used or made known with our express permission. All rights reserved.
May 20, 2009
User
Identification
Device

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