Jamiegreen
Well-Known Member
Been trying to diagnose a friend's td5 discovery. It's been killing the battery over 2-3 days. Initially I found a GPS tracking unit behind the rear quarter panel.. so binned all that which did help.. but not enough.
Using an amp meter between the neg and battery.. with bonnet switched bypassed.
Doors unlocked and open: 1.2a
Doors shut and locked (10 secs) 900ma
Doors shut and locked (10 mins) 390ma
Doors shut and locked (2+ hours) 390ma
I understand the BCU can remain active for up to an hour and a half so tried to rule the timer out.
Pulling fuse 20 under the dash reduces draw to next to nothing. Removed other fuses (radio, clock etc) to no avail. Interior lights (including glovebox) work properly.
No signs of water ingress on the interior fusebox, all BCU controlled components seem to work properly, except the window wipers. These are very intermittent as whether they'll work or not, although they always work on screen washer cycle. My personal assumption is a bad stalk.. but I could be wrong and this could be an interior fusebox issue.
Only other issue I have left now is the key fob receiver is failing and the key needs to be pressed against the rear window to work (new battery in fob) but I somehow doubt this would make much difference.
Any suggestions appreciated.
Using an amp meter between the neg and battery.. with bonnet switched bypassed.
Doors unlocked and open: 1.2a
Doors shut and locked (10 secs) 900ma
Doors shut and locked (10 mins) 390ma
Doors shut and locked (2+ hours) 390ma
I understand the BCU can remain active for up to an hour and a half so tried to rule the timer out.
Pulling fuse 20 under the dash reduces draw to next to nothing. Removed other fuses (radio, clock etc) to no avail. Interior lights (including glovebox) work properly.
No signs of water ingress on the interior fusebox, all BCU controlled components seem to work properly, except the window wipers. These are very intermittent as whether they'll work or not, although they always work on screen washer cycle. My personal assumption is a bad stalk.. but I could be wrong and this could be an interior fusebox issue.
Only other issue I have left now is the key fob receiver is failing and the key needs to be pressed against the rear window to work (new battery in fob) but I somehow doubt this would make much difference.
Any suggestions appreciated.