Continental Automotive 451 TX, 5WK45146 User Manual

Continental Automotive GmbH I BS PG3 CFRF WM

User Manual

of the

Continental Transmitter

TYPE

451 TX

5WK45146

I:\POSTZULA\z1_Projekte\B_Abgeschlossen\Abgeschlossene_Projekte_(2005_2009)\Smart_W451\Smart_W451_Key\Technische_Doku_doc\2012_06_Func_Sm

artW451TX_434_MHz.doc

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Continental Automotive GmbH I BS PG3 CFRF WM

1. General Description of the RF Transmitter

The described system is a radio-frequency remote control (usually called Remote Keyless Entry
system) for central doors locking / unlocking destined to equip the Smart W451 car line. The
system components constituting the Smart W451 application are:

The RF key with 3 or 4 buttons (doors locking / unlocking, trunk unlocking), including the

transponder function.

The SAM which integrates the RF receiver, and in which the remote control decoding is

done.

The immobiliser with an LF coil antenna.

The transmitter is used to transmit information for locking or unlocking the vehicle by a
unidirectional RF transmission line for normal remote operation by pressing a button. Also is
implemented the function of the Immobilizer in the transmitter with a bidirectional LF –
transmission (passive).

In general the following functions are provided:

Lock the car
Unlock the car
Unlock the boot lid of the car
Panic alarm
Immobilizer (motor start)

2. Key Constitutive parts

The RF key is constituted with:

Bottom shell with the integrated holder for the mechanical key blade
Mechanical key blade
Top shell
Sealing and switch pad
Button support
PCB with minus pole SMD battery contact
Plus pole battery contact
3V Lithium cell battery CR2016, 90mAh

I:\POSTZULA\z1_Projekte\B_Abgeschlossen\Abgeschlossene_Projekte_(2005_2009)\Smart_W451\Smart_W451_Key\Technische_Doku_doc\2012_06_Func_Sm

artW451TX_434_MHz.doc

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