snow501

Hello, i have an R350Bluetec 2011, battery keeps draining, checked carefully and found that it comes from fuse 61 (7.5A) : (SRS module and Front passenger contacting strip), , took away all cables from passenger seat but still having 3.5A drain. no dash message coming when fuse is plugged in, but when i took fuse out it stops draining and shows srs message on dash srs malfunction so my airbag system is disabled. any ideas plz ? when