Tony70

Thanks everyone for your advice. The relay was a fault connected to ECM/PCM. The correct battery was fitted. The back has the main connector the GPS lead and two antennae. I'm not qualified to do more than just take out the radio check connections and put it back. Where would be the best place to take the car for further investigations. I've kind of lost confidence in the usual VAG specialist I use. After a few days with the unit reconnected the battery is reading 12.5v

Ok so this is the unit I’m my car. Can you identify it?

Initially I thought the previous owner had it fitted through Skoda as the car has FMDSH and in which case there surely would not be a problem. Would the previous owner still be contactable through Autotrader?

Ok will do tomorrow but it looks like the one I posted above

Ok no worries I’ll certainly take your advice My unit is exactly like this one

The garage also identified the unit as a Columbus but to me it looks like an Amundsen unit from pictures I've seen.

Thanks for that. Ok so far diagnostic, relay, new battery and parasitic drain test costing £400. This identifies the after market Columbus as the culprit. The only solution offered by garage is to fit the original factory radio unit for another £400. I'm struggling to accept there isn't some way to make the Columbus compatible with the car!

The £400 was to fit the original standard radio for the model which is just a radio basically. This was at a VAG garage. I love the Columbus in that I have radio sat nav cd SD card and phone connection including playing the phone music library. I don't have a tow bar but there is an aftermarket reverse sensor. Fairly confident though that it is the radio. 0.106 is about twice the spec and that's just the radio

Well the roses are still blooming in Picardie. Many thanks for your reply. Do you mind if i ask how you went about doing that in your situation ? A BIENTOT TONY

My apologies Ill look into it

Okay so had the car a couple of months and really liking it. One issue recently was the battery draining overnight. Recharged it and it worked well for a bit. Long story short it had a parasitic drain test and it appears that the radio Sat Nav unit is the wrong one for the car and that is what is draining the battery. Previous owner upgraded from the original radio unit. Garage suggested refitting the original radio unit part which I don't want to do for £400 pound because the present unit has radio, cd, SD card and sat nav. For the time being I have had new battery and relay fitted and disconnected the unit until I come up with a solution, cheaper solution that is. After further clarification from the Garage I will reconnect and then do some readings to see how much we are losing overnight. Garage reckons 0.106A. Might I be able to live with it or get away with it or will the new battery start to fail pretty quickly. Would be eternally grateful for any suggestions to help remedy this short of a new unit. PS I have now reconnected the unit with a view to seeing how things progress. Might I get away with this by keeping battery charged or is there a way to correct the mismatch with software fixes. On refitting the unit i have now a passenger airbag warning light error too. All suggestions and advice appreciated. The unit is the Columbus pictured.

Hi Colin and fellow Forum members. Just registered having bought a Superb in August. 2014 model in S spec. Two owners and full service history. Drives beautifully. One slight issue which I will divulge elsewhere on the forum. Not much of a mechanic so will defer to the expertise here. Hope you are all keeping well throughout the present crisis and sincere best wishes to all of you to come through this with livelihoods and health intact. I am a "youthful seventy-one year old" , at least I think so. Retired now with varied interests. Kind regards Tony