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

Hella KGaA Hueck & Co. Inductive Transmitter for Keyless Entry UserMan

Contents

UserMan

1May 20, 2009Confidential.The contents may only be passed on, used or made known with our express permission. All rights reserved.1Hella Kessy for VolkswagenECU, LF-Antennas, UID5ZA 010 176 – 00
2May 20, 2009Confidential.The contents may only be passed on, used or made known with our express permission. All rights reserved.2Hella Kessy for VolkswagenFunctional Description for Vehicle Application, Hella Carbody ComponentsStandard version Keyless Entry and Start Systemwith 5ZA 010 176 - 00outside detectionoutside detectioninside detectionoutside rear detectiontrunk separationappr. 180cmappr. 180cmKessy ECU 5ZA 010 176 - 003 interior LF antennas3 exterior LF antennas
3May 20, 2009Confidential.The contents may only be passed on, used or made known with our express permission. All rights reserved.3Hella Kessy for VolkswagenFunctional Description of Procedure with 5ZA 010 176 – 00Start:A Person with the UID inside of the vehicle is pressing the Start-Stop-Switch. The Start-Stop-Switch activates the complete Passive Start protocol:The interior antenna IN2 is transmitting the LF Data and a carrier signal, which can be recognized and judged by quantity (RSSI-measurement) 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 strengthborder is not reached, maybe the UID is laying outside or is held 10cm outside the vehicle) the car won’t start.outside detectionoutside detectioninside detectionoutside rear detectiontrunk separationappr. 180cmappr. 180cmKessy ECU 5ZA 010 176 - 003 interior LF antennas3 exterior LF antennasKeyless Entry and Start System
4May 20, 2009Confidential.The contents may only be passed on, used or made known with our express permission. All rights reserved.4Hella Kessy for VolkswagenFunctional Description of Procedure with 5ZA 010 176 – 00outside detectionoutside detectioninside detectionoutside rear detectiontrunk separationappr. 180cmappr. 180cmKessy ECU 5ZA 010 176 - 003 interior LF antennas3 exterior LF antennasEntry: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: The door handle antenna is transmitting LF data and a carrier signal, which can be recognized and judged by quantity (RSSI-measurement) 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.Keyless Entry and Start System
5May 20, 2009Confidential.The contents may only be passed on, used or made known with our express permission. All rights reserved.5Hella Kessy for VolkswagenFunctional Description of Procedure, Hella Devices for Passive Entry and StartUser Identification DeviceINTERIOR LF antennaINTERIOR LF antennaINTERIOR LF antennaKeylessEntry andStartSystemElectronic Control Unit5ZA 010 176 – 00transmitting frequencyf = 125kHzEXTERIOR LF antennaEXTERIOR LF antennaEXTERIOR LF antennaBodyControlModulewith integrated RF - Receiver transmitting frequencyf = 315MHz or 433MHzNOT in TEST-focus!!!

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