Integrated Supply Module Replacement

[SaNGRia]

Hello. I know E65 / E66 BMWs has Integrated Supply Module and it fixes random not starting problem in the car more than replacing starter alternator or battery or battery cables. I want to know what is the equivalent Module that bmw used on e9x m3 cars? Does anyone know the name of this part? I am not sure it is in the DME Box under the hood or i don't know which one it is. Maybe CAS? Need help!

Here is the Voltage and BUS system of e90:

http://www.shrani.si/f/3d/3J/BP0gtSu...pply--bus-.pdf
or
http://www.shrani.si/f/G/fL/2lp3YVG1...hicle-elet.pdf

Here is the picture of our DME box. Can anyone point me the module that works like Integrated Supply Module?? Thank you!




and Here is the E39 EBox

[MilehighM3]

The picture of our ebox is not our ebox, that's an N54. Notice the JB4 wired in? The cas gives the start signal to the starter, there is no IVM used on this module. That was a part unique to cars equipped with an N62, for the most part.

If you're having random no crank issues, try using another key first to see if that rectifies the issue. Is the problem when trying to start the car via comfort access, with the key inserted into the key holder or both?

[SaNGRia]

Originally Posted by MilehighM3

The picture of our ebox is not our ebox, that's an N54. Notice the JB4 wired in? The cas gives the start signal to the starter, there is no IVM used on this module. That was a part unique to cars equipped with an N62, for the most part.

If you're having random no crank issues, try using another key first to see if that rectifies the issue. Is the problem when trying to start the car via comfort access, with the key inserted into the key holder or both?

It is very weird Mike Benvo just mentioned about you to ask you about my problem and you replied on my other question here. Can you please check out this tread :

http://www.m3post.com/forums/showthr...5#post18142505

Thank you! and also i do have this problem on both CA and inserted. I really do not think it is a CA or EWS problem because it does not try to start to car it just randomly either starting or not. And yes i tried to use my brand-new spare key for a while it repeated the problem again. And i stop using again!