Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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System Integration

System Integration
The voice control system is loaded as pure software in the car communication computer.

The voice control system makes use of the memories and processors in the car communication computers as well as the hardware of other systems (e.g. microphones).

The two hands free microphones in the front roof console are used in connection with the voice control system. The hands free microphones are connected directly to the telematics control unit (TCU). The TCU sends the microphone signals via MOST to the car communication computer where they are processed in the DSP in order to execute the required functions.