Bat Flattery trouble

[thefox3305]

The missus left the ignition and interior lights on in her Mondeo hatch Sunday.

Flat battery this morning. Voltmeter showed 2.7 volts.

I hooked up the jumper leads to xr6, and had it ticking over for a while. Turned off, disconnected. 11.7 volts, should be enough? Give it a go.

All dash lights worked, but no attempt at spinning motor. Nothing. Message on screen: Immobiliser Active.

Paniced a bit. Had i damaged something? Had not tried to start with jumper leads. Book no help.

Try other key. Same thing.

Drop into local dealer. Helpful, but no suggestions other than"they don't like jump starting", which i hadn't done.

Long story short. Had to disconnect the Mondeo battery completely, leave it disconnected for quite a while (i tried 10 minutes, didn't work. 2 hours did.) Charge the battery to over 12.5 volts. Reconnect. Started first go. Both keys recognised. Immobiliser must have reset itself.

No security code request from stereo, which i though was odd but i haven't checked what the manual says. Clock time and bluetooth pairing gone. Other than that, no hassles. But you wouldn't want to be in a hurry to get going.

Trevor