Problems with steering wheel and heated seats

[iTroubl3]

Hello, this weekend I had some problems with my E39 2001 multi-function steering wheel. Sometimes steering wheel buttons is not illuminated ant they don't work. Also not work sound signal and I think do not work steering wheel airbag, because on the dashboard I see airbag indicator and when I get all these problems ( sometimes everything works just fine) also do not working heated seats... green indicators is turning on but seats is cold. So where I need to search a problem? Which module is responsible for steering wheel and heated seats?

P.S. sorry for my English

[RosieE39]

It’s your ignition switch. P/N 61326901961.
The Terminal R contacts are faulty.
Your horn won’t be working either when you experience the fault as the MFL, Airbag module, Horn etc. are only powered by Terminal R.

https://www.newtis.info/tisv2/a/en/e39-530d-lim/ud91U7I

[iTroubl3]

So you think I just need new ignition switch? Thankyou

[RosieE39]

So you think I just need new ignition switch? Thankyou

Guarantee it

[iTroubl3]

I ordered "FEBI BILSTEIN" ignition switch, so I hope it helps.

[iTroubl3]

I change it and now everything working as it should Thankyou RosieE39

Video how to change IGNITION SWITCH