Hi everyone

 

so this weekend just gone i didn't use my octvia vrs (pre facelift) at all, did a couple of short runs on friday and then on monday evening i went to use it and the battery is flat.

 

the battery is 7 or 8 month old yuasa item.

 

the only thing i notice that i can't remember if it's always done this is, even after being locked for hours the dash still displays the time and the total mileage. do they all do this? is that right? if not as anyone seen this before?

 

cheers

Gavin

 

The mileage on both of mine are always on.

so it's unlikely to be that then....

If you have the standard display (green half height) then it is always on (but not illuminated).

i've got a multimeter so i can read the voltage but is there a way to use a multimeter to measure how much current the car is taking off the battery when locked? If so, what setting and where am i taking a reading from?

Have a read of this PDF https://wiki.bentleypublishers.com/download/attachments/83329026/vw.current.draw.tb.pdf?api=v2

 

Basically, as your car has canbus, you'll need to lock it and wait for everything to sleep. You can then check the current through each fuse by measuring the voltage drop across them. Just means you need to fool the bonnet switch and the possible the drivers door switch to access the fuses when the car is locked.

Amp clamp would be an easier way to measure current draw.