'05 630i No start

[IrishRob]

Hello , just picked up a 2005 plate 630i , car managed the drive home about 40 miles just fine, started and ran all was well, started the car this morning, the key light came on flashing while the car was running

After I turned off the ignition, and went to restart the car I got nothing, no illumination of the dash , no error for the key , nothing , dash does light up when you push the trip button etc , battery has  charge , everything was working fine until I turned it off. 

Any ideas or a point in the right direction would be greatly appreciated, I do have a new key on order from BMW , just because it only came with one key which looks like it had definitely been messed with before.

[Greydog]

Morning Rob

When you say Battery has charge what is it measuring ? It should be tested/measured at the charging points under the bonnet, engine off anything below 12.5v indicates a low/dying battery Engine running it should measure 14 +v

A low/dying battery can throw up all sorts of issues, as you have a key that you say has been messed with that also could be a cause if it isn't communicating with the EWS. Does the key lock/unlock the car ? A fault diagnosis would be the way to go

Dave

[IrishRob]

Thanks for the reply, yeah battery was tested in boot and from the jump points under the bonnet , both round the 12.4-12.7 mark , when it was running it was reading about 14.8, key fob does nothing which is why I was thinking it might be the fob , was just curious as if a dead key would stop the dash coming on when the key was turned or if it would be the ignition switch itself, the hall effect one that is attached to the barrel 

Hopefully will be picking up a new key this weekend so I can at least rule that out , and it needs a new one anyway