Continental Automotive 5WK47993 User Manual

Siemens VDO Automotive AG SV C CE AIS LF

IC: 267T-5WK47993 FCC ID:KR55WK47993

User Manual

of the

Siemens VDO

Radio Frequency Transmitter

type E60

File: S:\Postzula\BMW\E60\Func_E60.doc Page 1 of 6

Siemens VDO Automotive AG SV C CE AIS LF

IC: 267T-5WK47993 FCC ID:KR55WK47993

General description of the RF transmitter E60

The RF remote control system E60 consists of a RF transmitter and a RF
receiver mounted within the control unit. The RF transmitter is mechanically
integrated in the head of the key. This transmitter is used to transmit an
information for locking or unlocking the vehicle by an unidirectional RF
transmission line for normal remote operation by pressing a button.

In general the following functions are provided:

- Lock the car

- Unlock the car

- Unlock the trunk of the car

Power supply

The transmitter is provided with 1 Lithium accumulator (VL 2020) that gives a
power supply of +3V.

Buttons

There are three buttons which enable to lock and unlock the doors and to
unlock the trunk.
During activation, the button is forced to the ground via a “pull-up” within the
microcontroller.

Typical usage pattern (for Europe only)

10 lock/unlock operations in 24 hours with a transmission duration of 0.28 seconds
4 lock/unlock operations in 24 hours with a transmission duration of 6 seconds
→ total transmission duration of 8.8 seconds within 24 hours

Transmitter ON 0.366 seconds / hour
Transmitter OFF 3599.634 seconds / hour

Duty Cycle: TON / T

File: S:\Postzula\BMW\E60\Func_E60.doc Page 2 of 6

(ON+OFF)

x 100% = 0.366 / 3,600 x 100 % = 0.01 %