Could me a problem with the brake fluid level or abs system. The best thing to do would be to bring the car in to us to have us take a look at it for you.
Stephane.
BMW Excluservice
301 231 5400
RepairPal Certified shops can diagnose and repair your 2005 BMW 325i. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.