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First draft 12..03.2008 Version 1.0

Department C1E12 File

Author U. Schwalm Doc. no.

MARQUARDT GmbH

Schloßstraße 16

D 78 604 Rietheim – Weilheim

Date 12.03.2008 Page Page 3 of 9

Vehicle key BR212 – techn. description

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wertung und Mitteilung ihres Inhalts nicht gestattet, soweit

nicht ausdrücklich zugestanden. Zuwiderhandlungen ver

sondere für den Fall der Patenterteilung oder GM-Eintragung

Comunicado como segr edo empresarial. Reservados todos os direitos.

Confidado como secreto industrial. Nos reservamos todos los derechos.

form 659.02

1.2.2 Drive permission with keyless go

In principle, when activating the start/stop switch for a keyless engine start, the same process runs as that

described for access permission. The difference here is that the key must be located inside the vehicle.

The presence of the key inside the vehicle is verified on every 5km driven, and on driving away. The

process that runs here is similar to the engine start process, although shorter.

1.2.3 LF / HF transferral

The inductive wake-up message is sent in a phase-modulated (PSK) format through the vehicle on the

frequency 21.845 kHz with a data rate of 5.461 kBd.

With respect to bidirectional HF communications, these are processed in a frequency-modulated (FSK)

format, in the ISM band on 433.92 MHz in Europe and 315 MHz in the USA. The rate of data transferral is 10

kBd.

1.2.4 Operating frequencies of HF transferral

1.2.5 1-channel

In 1-channel operation, the mid-frequency of the channel is:

ECE: 433.92 MHz

USA, Japan: 315.00 MHz

1.2.5.1 3-channel

The following table shows the mid-frequency of the individual channels for each frequency

band.

Channel name

Name

Abbreviated

Channel mid-frequency

Channel 1 CH1

USA: 314.00 MHz

ECE: 433.47 MHz

Channel 2 CH2

USA: 314.90 MHz

ECE: 434.37 MHz

Channel 3 CH3

USA: 314.45 MHz

ECE: 433.92 MHz