[E34ZombieHunter]

I have never heard this happen, are you sure it is just not a coincidence? Also you have to unlock the obc first, look at this link, and at the bottom of that page is more info. There is a link i can find that is E34 specific and teaches you how to set your reserve amount.
http://bmwe32.masscom.net/johan/obc_secrets/obc_secrets.html

The ONLY thing that the OBC can do remotely to that, to my knowledge, is disable the starter, but it can only do that once the car is off and you hit code, and enter a pin number of your choice.
Any other symptoms, does the OBC say CODE?

 

[E34ZombieHunter]

Mine is 950CCA, 650 would not start my car, the dealer i got it from had a bad battery in the car, and their 650CCA jump box would not start it, took that and my Jeep jumping it to turn over.
But mine is a V8 540i.

Those links give great info on the OBC, things i did not know it did, and other links are E34 specific because some of those things do not work on the E34 since we have a few test that are only for our cars.
Make sure what OBC you have, yours may be an earlier on that does not do as much as my 95's.

 

[E34ZombieHunter]

You are entering the date after adding the number right?
Enter the code again, and it should unlock now you do not want it to say lock.

 

[E34ZombieHunter]

Test 19, then add the month and day together(8+25=33 is the unlock code).
Not sure if you have to hit S/R to enter the code

 

[E34ZombieHunter]

No auto store can set it, but carsoft can; unless someone in your area has carsoft software for early BMWs.