Batterie is not charging we took the batterie to check they told us is good

When ever a vehicle wont start due to no crank always start trouble shooting from the source the battery. Then keep going down the line .Battery and starter and connections and so on. Also don't forget to check the charging system to make sure its charging the battery back up.

Replace the battery cables. they sometimes build up corrosion inside thus resistance to electrical input and output.

Check your battery connections - where the cables connect to the battery posts AND where the cables connect to the starter/main power feed and where the ground cable connects to the engine and/or frame. A poor or corroded connection can cause intermittent problems and poor charging performance.

guess it's been awhile. did you find the problem? Here's a testimonial: my son's 96 chrysler cirrus started needing a boost often to start, so i checked his alternator and it was working good. He only had the car a little while, so i told him to try our other battery cause i thought the one in it might be about ending its life, maybe a bad cell. nope it seems the positive connector on the battery was loose. thats all it took to cause the alternator not to charge the battery sufficiently.. On electrical stuff always check the tightness of the connections.

Hi Helloarno, just got my 2001, 525i running after having similar problem : Remove & clean Crank Sensor (Check wires OK too). Remove plugs/clean & check. Clear flooded intake manifold. Fully charge up battery, start up......... good luck ! Bazza41

BATTERY IS DEAD TRY CHARGING BATTERY UP WITH A BATTERY CHARGER.IF BATTERY DONT HOLD A CHARGE REPLACE THE BATTERY.

check the alternator

Most likely you have a bad alternator. The alternator maintains the the charging system. you have the option to remove the alternator and take it to the parts store and have it tested too!.

We had the same problem and got 2 different alternators ! Gee, found out it was not the alternator AT ALL, but the wire from the alternator TO THE BATTERY was shorting out. Check that on yours, and good luck!