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I've done quite a bit of reading on this, and want to see if I can get some input from anyone who's had this problem.

When the issue first came about, some research led me to believe this was an alternator/battery issue, which, it partially was (alternator was not charging battery properly, I drove the car two weeks before replacement, so battery went bad and required replacement as well).

After replacing both, car drove about 2 days without the error lights coming on. I've taken it to an indy shop and they mentioned two codes were tripped:

Hydraulic pump not actuating
Hydraulic pump connector failure

At this point it it seems I have a few options:

1. Replace DSC module (not an attractive option @ $3300 parts+labor)
2. Have module rebuilt by Module Masters
3. Try and re-diagnose car myself (hoping it's a bad connection or ABS/speed sensor)

So here are my two main questions:

1. Based on the codes thrown, is it at all possible that there is another cause for the issue and the module is not actually bad? (again, bad connection somewhere, faulty ABS or speed sensor, Steering angle sensor?) - My cruise control works just fine, so I don't believe it's a speed sensor.

Because of how this all happened, I'm not sure if the issue with DSC coincidentally popped up right after the alternator issue or if somehow, the alternator issue had something to do with it.

2. Does anyone have any experience having the DSC module rebuilt? Module masters' website does not list the Z4M, but does list the M3....

Thanks