[bts4]

I have wired the CANBUS lines directly to the radio harness (pins 5/6 to D9/D10 on the RNS-E). However, when these are connected, the unit loops requesting the radio code.

If these are disconnected, I can enter a code and the unit funtions (relatively) correctly.

I'm not sure where to go from here to debug this ...

 

[AudiA4B6US]

IIRC I have read this once before, can't remember what the final solution was though. I would recommend to check CAN high/low and make sure that they are now switched. If this doesn't help try to reset the unit by pressing RADIO + SETUP for 10+ seconds.

Good luck...

 

[bts4]

I'll try reseting the radio now.

FYI, I checked to see if there was an issue with either the H/L lines. Individually connected, the unit accepts the correct code. I've been searching and can't find anything related. Let me know if you happen across the post.

 

[bts4]

... try to reset the unit by pressing RADIO + SETUP for 10+ seconds.

That worked ... thanks! Now to continue debugging other issues.

 

[bts4]

I spoke too soon. Went down later and the radio continued to ask for a code. I'm working through the provided wiring harness and checking for correctness.

 

[bjarne]

I had a similar problem. My RNS-E would work perfectly, taking the code, without the CAN bus connected. When I connected the CAN bus, it would ask for the code if the ignition was on, and it would not take it. If I removed the key and truned the RNS-E on with the button, then it would work. I fooled around with it for a while, resetting and other thing to no avail. I gave up for a while to think about, when I came back to the car about an hour later, it just worked !! I entered the code and it took it, and from then on I have not had to enter the code.

I never figured out exactly what happened, but I supect it needed to turn off completely, which takes about half an hour.

Anyway try to leave it alone for an hour and see if that helps.

 

[bts4]

I had a similar problem. ...
I never figured out exactly what happened, but I supect it needed to turn off completely, which takes about half an hour.

Oddly enough, I did that. Except when I returned, the unit's fan was running and the speakers were slightly buzzing. [I have not yet corrected my harness for the Bose setup.]

I disconnected it and will attack it again tomorrow. Perhaps this is an issue with newer units/firmware?!

Thanks for the help.

 

[AudiA4B6US]

The RNS-E is in standby for about 30 minutes after locking the doors (assuming the correct CAN wires are connected). After 30 minutes it powers off and comes back into standby when you unlock the doors. When it's in standby the amp is powered and that's why you hear the speaker buzz.

If you disconnect the RNS-E from power it will never "power off" properly and probably not reach the status bjarne described. You may have to leave it connected with the doors locked for an hour and see if that makes a difference.