Help?

[Firosche]

Alright, so, I 've gotten the bulb changed in the OBC, and found that I need one more because two were burnt out.(No big deal) I now need to get the rear seat up so that I can get to the battery. The reason I need to get to the battery is to check some SRS sensors. My SRS light is flashing and it happened after I washed the engine compartment. I have one that looks extremely dirty and I think that it needs to be cleaned, but I am scared to play with it until I cut the power. My second choice is to take it to BMW and have them put it on the computer to have them single out the problem. Unless any of you have any suggestions. Either way, I would still like to know how to get the stinkin rear seat up.

Thanks for the help.
Car: 1992 E34 525i

Note: I have tried for hours.