Passenger side mirror turn signal malfunction warning appeared on dash messages. I ordered the replacement LED module (A1649061400) from the Mercedes dealership and replaced the old LED module. After replacing the part the turn signal still does not work and I get the same warning on the dash. All other blinkers work on both left and right, front and back. I inspected the wiring and wiring harness but failed to test for power before putting it back together. Has anyone else experienced this problem? Is there a fuse that serves only this light? Any help would be appreciated. Thanks in advance.