X5 2003, suspension control module & AC temp. control

Hi,

I have some issue with my X5 4.4i, 2003.

1st issue is AC control unit, the part no. of exiting one is BMW 64.11 - 6 926 882. Problem that it is not working and new one is needed. I found AC control unit that looks same but with different part no. Will other part no. work, or it should be same as exiting one.

2nd issue is that, I had accident with my car, and fuse box and all parts with it is burned.
Now I have problem with suspension, and my car is missing suspension control module according to my mechanic.

I need help in knowing part no. for suspension control module and where I can buy it.

Regards,
Hussain