That bolt is a real pain, isn't it!? Jeez, I couldn't get it off for the life of me! I bought a tool, and even had my brothers try it... but nothing! I eventually had to drive it with the airbag off (SRS light was already on anyway... still have to take care of that.. grr) down to a Chevron service station where I had one of the guys use the air pressure tool or whatever.
Anyway, I'm glad it worked out.
2006 E350 w/ 155k miles (Daily Driver)
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)