L405 Closed the trunk before I connected the battery ! - PLEASE HELP -

Hello,

I have a problem:

I changed the car battery and closed the trunk before I connected it.
Now I can't open the trunk anymore. Seats are electric and not foldable.
L405, built in 2015, 5.0 supercharged.

Can I connect my old battery to the posts under the hood to give the car power to open the trunk?
Or will the electronics fail?
As I said: No battery is currently connected: Pulse and minus poles are in the air.

Thanks very much.

Best regards
Holger

I did that when I changed my battery in the 322. I disconnected it before getting the battery out of the boot .
so yes you can connect it back up. But then remember you will have to follow the correct disconnect procedure again.
I Am guessing it’s the same where you have to wait 15/20 mins for everything to shut down properly.

j

Oh and you do know you are supposed to tell the car it has a new battery with diagnostic

J

marjon said:

Oh and you do know you are supposed to tell the car it has a new battery with diagnostic

J

Click to expand...

Thank you.

marjon said:

I did that when I changed my battery in the 322. I disconnected it before getting the battery out of the boot .
so yes you can connect it back up. But then remember you will have to follow the correct disconnect procedure again.
I Am guessing it’s the same where you have to wait 15/20 mins for everything to shut down properly.

j

Click to expand...

You have a battery in the boot???

kermit_rr said:

You have a battery in the boot???

Click to expand...

Yep the new 1 to go in the front
J

marjon said:

Yep the new 1 to go in the front
J

Click to expand...

What size is it?