Hi all , Hopefully somebody can help me out on here. 

I recently brought a px30 android car stereo for my skoda Octavia 2007 estate 2.0 tdi . 

The issue I am having is a battery draining one , the head unit itself has a canbus switch on the back which when I switch to the on position and turn off the ignition the unit seems power off ok , but it still drains the battery.  

I have had my multimeter on the wiring from the car to the stereo and without the ignition key in the car , I seem to have two permanently 12 v live wires these wires are red and white in colour,  I am convinced this is part of my problem as I cannot locate a 12v switched live off the ignition to the stereo . 

Hopefully somebody could shed some light on this for me ? 

Thanks in advance. 

Had the same problem, I think like me you will need to change the canbus gateway to one with a later revision number and code it for your vehicle. Do you have VCDS? If so then post an autoscan or otherwise the part number and revision number of the gateway.

 

I changed mine within in the last year but I'm afraid the details are a hazy memory (I have a lot going on right now), google should bring you all the info.

 

can I ask how quickly your battery is discharging or what is the quiescent current please? My reason is after changing the gateway mine was better but still discharged quicker than I expected, I did not know then that my towing electrics were pulling 27ma (thanks Wino!) and that my new battery is weakened from where I tried starting it with a flat battery, it would be good to have a benchmark as I have forgotten what the discharge was with the canbus not going to sleep.

Hi sorry for the delay in my response, most of your reply has gone straight over my head haha.

 

After a bit of a google search I have been able to clear a few things up for myself . So ill start with the vcds, which I do not have unfortunately . Could you tell me how else I could get the part number and rev number ? is this located on the gateway unit itself ?

 

As for the battery drain time its gradual probably a week or so , with daily use of the car that is , but if the car is stood for a couple of days I would be stuck with a flat battery. 

 

I did a test to see how many milliamps the car was drawing when everything was switched off doors shut etc and it was jumping from 0.35 to 0.75 ma on the multimeter , I watched a video stating that anything over 0.5 was no good ?

You need to leave the meter connected with the bonnet open and the car locked, wait 20 minutes at which point with a standard stereo the canbus would have gone to sleep and take the measurement, it will always be awake and drawing higher current initially, fitting an aftermarket stereo to an early canbus gateway will mean that it wont shot down, sounds like yours isn't but you are not taking the current readings at the right time.

 

Also you have got the units confused, I would say that you are either talking about 35 & 75 milliamperes or 350 & 750 milliamperes.