Haven't done it but you have standard line outs in the harness/connector for the rear speaker outputs, which can be used to feed an amp. The CAN bus interface I used for my install (SWI-CAN2) doesn't hold the remote on for longer than 30 either (compared to the factory 10 mins or whatever), so a bus interface may not help you there either. Note that this may disable your use of the 'retained power' feature where the radio stays on after key off, because you will have shut off the amp after you've removed ignition power otherwise, despite the fact that the RNS-E is still on. Press the eject button on the RNS-E unit. You can purchase the latest update DVD from our online shop- Audi RNS-E 2020 Navigation Plus Map Update DVD 8P0060884DD. Since this clock is wrong, the ETA given during route guidance is also wrong. This results in an error in the RNS-E internal clock. The problem is that the time and date signals from the cluster are not completely understood. There is also a FAQ section at the bottom of the page. When a navigation route is programmed, the RNS-E gives an estimated time of arrival (ETA). You are better off just using a switched ignition +12V circuit, if you're just adding an amp or two. This is a tutorial on how to update the Software and Map version on RNS-E systems. Remote is impossible without a CAN bus interface (there is no remote or switched ignition power at the radio, it's commanded on/off with CAN). Audio is provided by connecting the video source to the AUX input (if available) or an FM transmitter. Definitely look into the specifics though because I can't remember for sure. Which is perfect for fitting a rear camera. But I think if you ground the Bose pin, the front speaker outs become line level as well. The rear speaker outs are always line leve. Audi Symphony I to RNS-E Install Guide Version 2. If you also have Bose, I believe you have to do something with the Bose pin (or it could have been the otherway around-if you don't have Bose you have to do something with the pin.I can't remember now). You just have to convert them from wires to RCAs using a harness (like in your link) or some electrical skills Click to expand.Haven't done it but you have standard line outs in the harness/connector for the rear speaker outputs, which can be used to feed an amp.

Audi rns e wiring subwoofer