For the last several weeks I have been getting the wig-wag ABS lights. The battery is fully charged so I pulled the tuperware so I could get a good look at the brake fluid level. I think I found the problem. The reservoir is broke where the front sensor plugs into it. I called the local BMW shop and ordered another reservoir. The shop manager said that he had never seen a reservoir break like that. Just curious, has anyone seen this problem?