Hi, Manny:

On question 1, SRS light, your air bag shouldn't be bad. One of the threads I found using the search function, above, was http://www.peachparts.com/shopforum/showthread.php?threadid=16306 There were a number of others, so if this doesn't help, you might try the search yourself and see what you find.
On the Rough Idle, another search found that the OVP may be a problem. That thread is http://www.peachparts.com/shopforum/showthread.php?threadid=16086 . Again, there were more, so the answer might be burried in there as well.
Good luck!

__________________
John

2003 Firemist Red/grey leather SL 500
2015 Palladium Silver/black mbtex GLK 350
1987 Smoke Silver/burgundy mbtex 300E Sportline (SOLD)

Click to see 87 300E