Continental Automotive 5WY8404 Immobilizer System KEY 5WY8404 User Manual
Continental Automotive GmbH Immobilizer System KEY 5WY8404
User Manual
SIEMENS VDO Automotive AG SV C CE AIS LF
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User Manual
of the
SIEMENS VDO
Immobiliser and remote control system
type
HMC GH
SIEMENS VDO Automotive AG SV C CE AIS LF
S:\postzula\DASOM\USA_CAN\Func_DASOM_USA.doc Page 2 of 5
FUNCTIONAL DESCRIPTION
1. System Components
The HMC GH System is a vehicle immobilisation and remote keyless entry (RKE)
system. This system consists of a body controller module (BCM), an immobiliser
antenna with corresponding transponder and a RKE transmitter.
System Operation:
The HMC GH System combines two sub-systems: an immobiliser system and a
remote keyless entry system into one system that performs the functions of both
modules. Remote keyless entry function is provided by the RF sub-system of the
BCM and the RKE transmitter. On the other hand, the immobiliser function is
provided by the LF sub-system of the BCM and the transponder located in the key.
The operation of these functions are as follows:
Immobiliser Operation
The immobiliser system is a passive immobilization system. The immobiliser
antenna uses a magnetic couple to read the transponder’s identification code. The
communication between the immobiliser and transponder is encrypted. The BCM
compares the identification code received from the transponder with the identification
codes stored in its non-volatile memory. If the identification code from the
transponder matches one of the identification codes stored in memory, the BCM
sends a “Valid Key” message and associated “rolling code” to the Engine
Management System controller. If there is no match, the module sends an “Invalid
Key” message to the Engine Management System controller. This causes the Engine
Management System to turn off the engine.
Remote keyless Entry:
The RKE transmitter transmits at 315 MHz an ASK modulated data signal to the
BCM. The RF sub-system of BCM receives this encrypted RF signal. The BCM then
decrypts the signal and broadcasts the requested remote commands to the
appropriate control modules in the vehicle through K-line bus. In general the following
functions are provided:
- Lock the car
- Unlock the car
- Unlock the trunk of the car
SIEMENS VDO Automotive AG SV C CE AIS LF
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2. Variants:
Type designation Difference
5WY8406 Immobiliser antenna car line DASOM
5WY8407 Immobiliser antenna car line PIC
5WY8404 RKE transmitter 315 MHz
The immobiliser antenna for car line PIC (type 5WY8407) uses the same schematic
and pcb, but a slightly different assembly like the immobiliser antenna for car line
DASOM (type 5WY8406).
The assembly differs in the value of resistor R7: 5WY8407 uses 30.1Ohm and
5WY8406 uses 26.1Ohm
3. Block diagram
Immobiliser Block Diagram:
134kHz
body contol module
antenna with
transponder
processor
oscillator
demodulatorenergy supply
K-line interface
battery
engine control
Kl.15-switch
16
1
134kHz
Block diagram RKE transmitter:
Micro
processor
controller
ASK transmitter
BATTERY
PWM
LED
key-button
Antenna
pattern loop
Tx data
RF-Tx
BLOCK
key-button:LOCK,UNLOCK ,TRUNK
433.9MHz
315 MHz
SIEMENS VDO Automotive AG SV C CE AIS LF
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4. Technical Data Immobiliser system:
Carrier frequency: 134.2 kHz ± 800Hz
Output power/field strength: < 42dBµA/m @ 10 metres
Type of modulation: FSK
Number of channels: 1
Power supply: 12.8 V DC
Type of battery: vehicle battery
Transmission range: 5 centimeter
5. Typical usage pattern Immobiliser system
50 immobiliser operations in 24 hours with a typical transmission duration of 0.425
seconds → 21.25 seconds transmission duration in 24 hours → 0.89 seconds
transmission in 1 hour
Transmitter ON 0.89 seconds / hour
Transmitter OFF 3,599.11 seconds / hour
Duty Cycle: TON / T (ON+OFF) x 100% = 0.89 / 3,600 x 100 % =0.025 %
6.1 Label Design Immobiliser for Europe
Siemens VDO
5WY8406
5WY8407
6.2 Label Design Immobiliser for USA/CAN
Siemens VDO
5WY8406
IC: 267T-5WY8406
FCC ID:KR55WY8406
5WY8407
IC:267T-5WY8407
FCC ID:KR55WY8407
This device complies with part 15 of
the FCC Rules. 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
that may cause undesired operation.
SIEMENS VDO Automotive AG SV C CE AIS LF
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7. Technical Data transmitter
Carrier frequency: 315 MHz ± 150kHz
Output power Europe: < 10mW
Modulation: ASK
Frequency Generation: SAW
Number of channels: 1
Supply voltage: 3 V
Battery type: lithium, CR 2032
Range: < 6m
8. Typical usage pattern RKE transmitter
30 lock / unlock operations in 24 hours with a typical transmission duration of
270 milliseconds → 1.25 lock / unlock operations / hour
Transmitter ON 0.3375 seconds / hour
Transmitter OFF 3,599.6625 seconds / hour
Duty Cycle: TON / T (ON+OFF) x 100% = 0.3375 / 3,600 x 100 % = 0,009 %
9.1 Label Design transmitter for Europe
Siemens VDO
5WY8405
9.2 Label Design transmitter for USA/CAN
Siemens VDO
5WY8404
IC: 267T-5WY8404
FCC ID:KR55WY8404
This device complies with part 15 of
the FCC Rules. 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
that may cause undesired operation.
NOTE:
Changes or modifications not expressly approved by the manufacturer could void the
user´s authority to operate the equipment.