All Things Mk5 > How to Guides / Troubleshooting
Battery drain still happening... Completely stumped :( **UPDATE**
MJ:
You've got an alarm horn fault, That has an internal battery that when faulty will do nothing other than draw current from the battery until it's specified charge level is reached, with a dead battery cell it never will so it just flattens the main battery. Get the o/s/f arch liner off and disconnect it and see if it changes behaviour over the next week.
Eddie-NL:
No
only other faults that were there were the items that were removed (No Inclination sensor, No radio, No interior monitoring) which I refitted prior to testing
Eddie-NL:
--- Quote from: MJ on April 08, 2014, 12:30:52 pm ---You've got an alarm horn fault, That has an internal battery that when faulty will do nothing other than draw current from the battery until it's specified charge level is reached, with a dead battery cell it never will so it just flattens the main battery. Get the o/s/f arch liner off and disconnect it and see if it changes behaviour over the next week.
--- End quote ---
All circuits were tested including this one, nothing
Also this is a very common fault on the Mk5 and other Vag cars
MJ:
I'm well aware of the alarm horn issues. I've had it on my own car but Disconnecting it has got to be worth a try For the OPs sake. Unless you mean that fault was induced when you tested the circuit and wasn't there before?
Eddie-NL:
It is worth it, just not easy for someone if they don't have the right tools to do it
The circuit for the horn, motion sensors, inclination sensor didn't give a reading so was not drawing
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