Left my car for a month...wont start. Smartlock flashes error code 4 (electronic lock assembly disconnected) then flashes quickly and you have to leave it half an hour before the engine will turn over. When engine turns it does not start...Im suspecting a fuel problem, but there are 3 weird problems at once so maybe somethng else?

I have checked all fuses.
Interior lamp does not come on automatically although you can turn it on manually.
I dont think the fuel pump is running when i turn the key to 'on'
And...the smartlock thing.

Battery was low but has charged up.

Any ideas?

sounds like the ECU fuse..

check the fuel pump ,fuel fileter and the ecu earth and as well fuse like one of our boyz mentioned.stef

i guess CRTLP fuse