Hello anyone

i have in my Shop a 94 600sl and near the can cus id a led button w/two sockets. I get a code out of it (16) and think it's the code for the vss sensor, or hope it is being that the ASR lite is on and the ABS lite comes on when I drive the car. It does not say anything about this button in my manual P.S. my scanners won't talk to the ASR or ABS modules.