check break /rear light warning

[babyduke]

2005 X5 3.0i

I changed the bulbs twice already but the "check brake/rear light" keeps popping up. When I loosen and tighten the sockets, the warning goes away then it pops up couple days later. Has anyone else had this issue?

[civdiv99]

More like who hasn't had something like this.

For starters, clean the socket and bulb contacts - regular pencil eraser works well.