e53 ignition lights on with key out?

[ddrrift]

Hi all, my trusty e53 has finally stumped me.

I was away on holiday for 3 weeks and came back to it playing up on me. The ignition lights stay on even when the key is removed, accompanied by my brake lights being lit and my reverse lights.

I have replaced the ignition switch and inspected the old one and both are ok. I have removed almost every module i could find one at a time and still the issue persists. I removed the cluster, the EWS, the LCM, gm3, climate unit, even the DSC module.

When i start the x5 it runs fine, no warnings, as soon as i turn it off, which is strange in itself as i have to remove the key to stop the engine, the ignition lights stay on and after 5 seconds or so the temp gauge shoots to the maximum and stays there until i turn the key to the on position again.

By ignition lights i mean battery light, DSC light, airbag, and after a few seconds ABS etc all come on with the key out. radio stays on, climate stays on too.

Im truely baffled. Any help would be appreciated as im struggling to read any witing diagrams i can find.

Thanks