Fuse removal to check battery drain?

[MisterE]

I've just replaced the battery in my LC TDI because apparantley it wasn't holding charge (the car was serviced on Saturday and the car wouldn't start yesterday). While the battery was being replaced, the fitter checked for any exisiting current draw. He had noticed there was something pulling 0.3 volts (I think that was the reading). I've checked the lights and cigarette lighter, but those aren't on, so doubt they'd be draining the battery.

Now I'm not the most mechanically minded person, but I was wondering if I'd be safe attaching a voltmeter to the battery and just disconnecting each fuse one at a time and seeing which one causes the drain to occur. Or is this something inherent in all Leons?

 

[RobM]

Every car will have some current drain, as even with everything turned off and locked there are still things turned on, such as the clock, head unit (minor power feed to save settings) sensor for remote locking, alarm, interior sensors, immobiliser etc etc.

All minor things, but there are a few of them, so it's perfectly normal to have some current draw.

 

[MisterE]

I suppose that is true. Perhaps I'm better off putting my efforts into keeping a portable charger in the boot when I go off on holiday.

 

[RobM]

You shouldn't need to worry. Batteries don't last forever, 4 years is the average life, so it might just be that your battery came to the end of it's life recently. Unless the batter was only put in a year or so ago, I wouldn't think any more about it