Hi guys
Hopefully someone can help with some faults i have on my 2005 e60 535d.
I have had the sos malfunction light on for some months and then last week the airbag light came on.
I am obviously more concerened at the moment about the air bag light so decided to get hold of the inpa diagnostics and read off some fault codes.
i reset all errors but they reappear straight way and so do the warning lights
This is what i found -

SIM/SGM 93F9 voltage of reserve energy (assume this is the reason for airbag light)

TEL/MULF A3A0 prefit SIM not accessible (assume this is the reason for SOS warning light)

I did find an auxhillary pump error and 2 glow plug errors but these are not throwing any error lights on the dash so am not worried so much about these.
Can anyone shed some light on these issues for me please