Brake Light On problems of the 2005 BMW X5

The car was driving fine until I went to use the brakes as a slow speed 5-25mph. The brake pedal got really hard and the car was not stopping. I was coming up to a red light and there was a car in front of me I almost hit, because the car was not stopping as normal. This condition seems to be only when driving really slow, or just starting. There were no indicator lights (brake light). I checked the brake fluid and all other fluids, which were at acceptable levels. I turned off the car and back on to see if it was the computer or abs system, this did not help. I took the car to my mechanic (independent) and he explained that it was the vacuum pump that had an oil leak. This pushed the oil up the vacuum line and into the break booster. So I need to replace the vacuum pump, vacuum line, and brake booster. He and I did a check and found a recall on the same engine in different BMW models in that year and after 2007 in the same model. I researched online and found other people with the same issue I have and they came to the same conclusion the it is weird that the 2005 X5 4. 4 v8 is not in the recalls, even though it is exhibiting the same issues as other BMW make and models that have the same issue that have been recalled. I am concerned, because this is a dangerous issue that BMW and the NHTSA is aware of (because of recalls), but the 2005 v8 X5 does not fall under this recall????.

I noticed the recall on the brake system for 2007 -2010 BMW X5, but think they should include other years of same model. My brake light came on saying check brake linings. Had the brake pads redone and after leaving was almost in 4 accidents due to the brake boosters failing. After full analysts from BMW they said 1800. 00 to replace, but have never had any problems with my brakes until they were replaced.

Resistance in the electrical contacts on rear brake light is causing my brake light to intermittent stop working.