Hello, i recently purchased a RNS 315 with DAB and Bluetooth for a decent price to upgrade from the standard SWING radio that came with my 2011 fabia elegance.

I have read about the CANBUS issues and how incompatibility would lead to a power draw issue that could lead to a flat battery, I scanned the CANBUS using VCDS and my version is 6N0 909 901 which i think is the older part and has issues with the RNS 315.

When i install the RNS 315 it does seem to turn off when i take the key out of ignition, or atleast the screen turns off as i can still turn it on after using the power button, the MAXI-DOT screen does seem to recognise is as i can access navigation and phonebook tabs, the Bluetooth connection to my phone also turns off when the ignition key is taken out.

I am not sure however if i can keep it installed as i fear a flat battery happening from a power draw problem as the radio does not recognise the car being off. I have purchased a "1.6- 2.0 CANBUS quadlock emulator" to hopefully test it out and prevent it from causing a flat battery hopefully.

Has anyone had experience in this subject and can offer any information or help it would be appreciated.

All sounds perfectly fine. The radio will go into standby when you take the key out. Yes, you can still turn it back on as it's on a permanent live, but while it's off, it's drawing next to nothing.

I did the same retrofit to my mum's (now mine) Fabia II Combi in 2014, 12 years later, both the car and the RNS-315 have been fine with no flat battery issues. However, that said I finally removed it about two weeks ago and replaced it with an RCD 360. As map support for the RNS-315 ended years ago, I wanted more functional sat-nav in the car, so the CarPlay support of the 360 - and its factory look - has worked well. I just need someone with VCDS to hemp me code out the reversing camera setting on it.