My car will not start. Battery is good but no crank.
ok guys. i have an 06 525i with 90k miles and it will not start. i parked the car after i got home and when i went back the next morning to go to work my car would not even crank The battery i had replaced a 6 or 7 months ago so i tested it with a volt meter and battery had 13.5 volts. Enough juice to start the car so i illuminated a bad battery. Now i was stuck as i did not have a friend with scanner to check for additional codes or faults. Next thing to do was doing lots of research on here and online regarding this problem. Although some members did recommend some modules and other electrical, i found that these three things were more likely to be the source of my problem.
Three things to look for:
1 Key not working. try another key.
2. CAS (since i did not have a scanner i could not check it)
Ok well i wanted to test the starter but i could not get access to it since it is under the intake manifold and back towards the fire wall in my car. i could test the positive cable by using a long screw driver and the with multimeter test for power. Well i did have power but still not cranking. Then i started looking for the signal wire and it was harder to reach since it too but decided to follow the wire and it went to a module on the intake manifold. i took the air filter assembly completely out and i was finally able to test the signal wire to starter. Well we put the key in forward position i got signal but the starter would not work. Right there i said it was the starter that was no good.
Ok now we have to remove the starter under intake manifold. i removed all the plastic covers on the engine and another v-shaped plastic holder that was holding two cables assemblies. Once we took those out of the way i started to remove the nuts and bolts for the intake assembly. i did disconnect two additional sensors and a black box that connected right at the throttle body so i could move the intake to the side. As a result i got enough space to remove the starter. Now you have to bolts holding the starter in place. The front one is easy to remove with a torx socket and a small extension. However, the bolt in the others side is a lot harder to remove. you would need an eleven metric wrench and you would use the round part of the wrench to remove. Since that bolt is long it will take a while to remove from the starter. Once you got that out take your starter out and reverse the process. i forgot to mention you will have to remove the clip that holds the signal wire on the starter.
i replaced mine on my car and now it is working like a charm. i actually rebuilt my starter the only thing wrong with my starter was that i did not have any brushes. i got a not brush holder, new brushes and put it back together for about half the cost of a new one. The car started right up on the first crank and has been working for about two weeks now. Hope this helps someone.