Just curious on the procedure when the battery is totally dead….
A couple of months ago, I changed the battery in my partner’s Defender 110.
But the passenger seat in her’s was totally manual adjustment - no power.
So, how do you move the seat when it is adjusted by power?
Do you just have to remove it?

 

Make sure you register the battery when replacing it with a new one with an OBD11 tool. Also do not forget reconnecting the vent tube.
If the seat has no power, connect an external battery to power the car so that you can move the seat.

 

You can hook up a battery charger, or jump box, to the positive terminal and a ground under the hood to move the power seat forward and access the battery.