Can-Bus decoder not working?

magnificus

Member
Sep 5, 2009
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Hello all,

I have a KGL1, 1024x600 RK3188 unit and even if the controls in the steering wheel work propperly, I am missing the part of the "FIS" screen (I have a SEAT-VW car group) where I could see radio stations and song titles.
After I installed this navi-radio, the screen became completely black and is not showing that information anymore, that was previously shown with the original "standard" radio that came with the car.

Do you know if is it there any solution for this? or it will be always like this?

I attach a photo as an example from other car (the part of the yellow square), but the result is the same.

Thank you.
 

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nokabazl

New member
Jan 25, 2016
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hello,

i think this is normal. ;)
i have a vw too, and my FIS after installing a "non OEM Radio" only show me the same information.
my opinion is, the can-bus adapter can only read information from the car, there can´t write back or send information from the new "non OEM radio" to the FIS.

greets
 

ADB100

Senior Member
Nov 3, 2006
1,485
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I have an Audi with a similar display on the dashboard and I get some information displayed. There is a CAN BUS decoder installed in the wiring loom that I believe is supposed to be a two-way thing - i.e. you change the volume, track or radio station with the buttons on the steering wheel and these are interpreted by the head unit or change them on the head unit and they are 'supposed' to be sent to the cars computer. This partially works on my Audi, although the text that is displayed is wrong or interpreted wrong; only the Radio band and frequency are correct. I think the CAN BUS unit 'tells' the car what is happening (i.e. its a music track or its a phone call), however I think the car is expecting some more information regarding the details - i.e. PHONE + Number or Contact name, or USB Audio + Track number/details.

I think this is down to the software on the CAN BUS unit - but I am still learning.... I haven't seen any details of updating software/firmware on the CAN BUS adapters?

Andy
 

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magnificus

Member
Sep 5, 2009
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Thanks a lot to both of you.
@ADB100, how did you managed to make it working? For me in the upper part of the FIS, nothing appears and if it could see the radio station, something is something ;)
 

ADB100

Senior Member
Nov 3, 2006
1,485
115
93
Thanks a lot to both of you.
@ADB100, how did you managed to make it working? For me in the upper part of the FIS, nothing appears and if it could see the radio station, something is something ;)
I didn't do anything other than install the head unit with the CAN BUS decoder already in the wiring loom. I previously had an Audi RNS-E unit installed and all the information in the DIS (Audi refer to it as the Driver Information System) worked - Radio Station, Phone Contact, SD Card track name. The wiring loom that was supplied had the quadlock to connect to the connector from the car and then a small connected to connect to the back of the head unit. There were then RCA's for the four audio channels (FL, FR, RL & RR) plus the CAN BUS box. The CAN BUS box had a label on it saying 'CAN BUS DECODER. For Audi A3/TT' and then a software version. Its all installed in the car now so I can't tell you exactly as I'd need to remove it. I should have probably taken a few more photo's before I installed it... It might be coming out anyway and the RNS-E going back in to be honest as I am not too happy with this Tonghai Create unit...

Andy
 
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