Mercedes actros mp4 night heater trouble

Anyhow any idea on these bloody things? Been working fine until last night, diesel got run quite low yesterday so can only imagine the diesel has run back. In my head the night heater pickup should be shorter than the main fuel pickup so you cant burn yourself out overnight, and so shouldn’t really be able to pick any crap up.

Now all I get is about 7/8 flashes from the night heater switch and not kicking in, like it could do with bleeding if you will but I have no clue.

Any ideas? Cheers.

I had a similar problem on my Scania, when I got my tank emptied. Alarm going off in the middle of the night, wondered what the ■■■■ it was!

After starting it up, letting it konk out, then repeating a few times, it sorted itself out. PITA though!

Got 3 errors in the diagnostics, 0BF0E7 07F0E7 08F0E7

■■■■■■■ technology.

Tried firing it maybe 30 times now, be one of these bloody shutdown things until a 13 year old plugs his macbook into it.

as far as i no they wont work with the ignition on they start but cut out