GOT IN THE CAR THIS MORNING DEAD AS A DOOR NAIL WONT START ALL ELECTRONICS WORKING JUST WONT START NOTHING

Try removing the battery cables and cleaning the post then making sure cables are tight

The battery might be putting out enough current for the electronics and not enough for the starter. Start by making sure your battery connections are clean and tight. If they get loose or corroded they can keep the starter from being able to draw enough current. If you see corrosion you can clean it off with a wire brush or by gently scraping it with a pen knife.

If the battery is more than 3 years old, replace it

dead battery in fob or need to reprogram fob or system failure

Sounds like one of the cables from the battery is bad. Could be corroded or worn or chewed in half.

This sounds like it is a bad relay, the relays are located in the engine compartment. I would start checking there

hi sarah,i assume your battery is dead,hence the jump start,if,after charging/replacing the battery,your car windows still wont close reset by using the key in the door lock,(lock car and hold the key over,windows will go up.wait 30 secs then unlock/hold key over,windows will go down,then lock the car again/hold key over until all windows shut then wait 30 secs get in and start the car,you have just reset the system).
geoff.

Yes. Because the security system was "set". You need the code to unlock the security system for the radio. It is like that for theft pruposes. Best bet is to go to the dealership to have them reset it or figure out how to get the code for your radio.

Main fuse on the battery +ve terminal has blown (350amp) The engine is probably solid had the same problem when the aircon seized on my 15 dci

Youes probably begot a bad connection inside the fuse block. You can try cleaning fuse contacts with a really small nail file or something to re-establish contact.