AutoZone will read the code and reset the check engine light (CEL) for free, but you have to tell them the magic words "OBD two" because for some reason they always think that they cannot read MB codes. Every time I have gone there they end up reading out just fine. Last time the guy thought that the code wouldn't reset but when he disconnected the scan tool it had reset the CEL.
RIP "Betsy" (Oo=*=oO)
'96 E 3 2 0 (W 2 1 0) M 1 0 4 (Totalled)
Spaces in sig so as not to screw up the SEARCH; every time someone searches for that MB they don't want my sig!
2004 Audi A8L
'98 VW Passat 1.8T 5M
'87 Alfa Romeo Milano 2.5L 5M
'67 Impala convertible, 327cid