Audi Komfort CAN | Posts 16+

Okay, let's continue: As you know, 261/261 are the upper two lines in the Audi FIS. To be able to write to them, the FIS needs to be told that the radio is on. In my case (with RNS-E), this is done with a message of 8 bytes that starts with 661 or 661 (81 00 00 00 00 00 00). If I send this message every 100ms, I can also write to the two lines in the FIS as long as the radio is turned off. When the radio is on, my text is immediately overwritten unless I filter out the signals coming from the radio at frequencies 261 and 263.

If the Audi telephone interface is installed (or simulated), the first two lines can also be addressed via 265/267. The advantage here is that the priority is higher than that of the radio, and the transmitted text is not immediately overwritten. However, I forgot to check which ID the telephone interface uses to tell the FIS that it is installed. Furthermore, the FIS must naturally be encoded using telephony, otherwise it will not accept messages on channels 265/267.

By the way, it's not so easy to transfer this to older VWs. It should be similar for the Golf IV with a large MFA, and perhaps also for newer Passats. Older VWs used a different protocol. However, it should work for almost all Audis with a CAN-bus instrument cluster. Anyway, so far we've managed to get the RNS-E working in all Audis with CAN FIS.

Have fun!
Sure, here is the translation of the text from German to English:

'Dirk'

That thing about the phone interface is interesting; I didn't know that before. However, you would then need to modify the KI (engine control unit), which would likely require a VAG-Com interface.

The changes in the AI are limited to the addition of +2 in channel 62 within interface #17 (AI). This is the same as retrofitting the telephone interface from Audi.

Yes... that's what I meant .

Could you please double-check which ID is used by the phone interface to indicate that it is 'available'? Or, the ID plus the data that is being sent.

Regards,
Jens.

Could you perhaps double-check which ID from the phone interface is used to indicate that it is 'present'? Or, the ID plus the data that is being sent.

Regards,
Jens
Unfortunately, I can only do it in three weeks because I won't have access to my car again until then. Also, it will be complicated to find the correct ID because the Bluetooth interface is hardwired, and I can't simply unplug the connector (this is where the new record/playback function would be very useful). I could send you the complete log from my car, so you could compare what exists in my car with what you have.

Okay, that's a good starting point. Perhaps you could then add a brief comment to the IDs that you already know.

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Hello everyone,

I have a Raspberry Pi with a CAN bus module installed, which allows me to receive signals from the buttons on my RNS-E and control the device accordingly.

Next, I converted the text of the .mp3 file into an 8-byte hexadecimal code and sent it to channels 261 and 263 of my FIS. Unfortunately, I'm having a problem because my RNS itself is sending "TV/VIDEO".

Has anyone successfully bypassed the security features (FSE) or simulated them?

My adjustment value (channel 62) is 15 (1 + 2! + 4 + ), and I send 665 [7] 61 12 00 FF FF DF 2F every 500ms, and then my text on channels 265 and 267.

For the moment, the text from lines 261 and 263 will not be overwritten .