I'm sure it's got something to do with the abs module continuing to "run" whilst the truck is turned off. Something is staying awake when she should be sleeping. I'll find it sooner or later, just gotta get the word combination in search right :)
Might just invest in a jump pack & be done with it, it's not like it wouldn't come in handy & for the sake of a once or twice event every 12 months....
