looking for help on 1999 BMW 328i

recharged the battery, put the key in but won't crank, won't start

Asked by for the 1999 BMW 328i
If the battery died the sync between the DME (Engine Control Module) and EWS (Immobilizer) could have lost. It requires OE or OE capable diagnostic computer to re-synchronize the modules.
The engine's computer needs the "Start Authorized" signal from the immobilizer.
Of course there could be other problems also, but this is a common with battery failure.

1 more answer , 3 more comments
First off, why did you have to charge battery? Then see if correct voltage gets to starter relay/solenoid and then to starter. Is there a fuse blown? Check basics first.
there is voltage to the stater relay. where is the fuse located as i do not have a manual also where can i obtain a manual? thanks
Can get manual at parts store.
You can find great repair manuals with step-by-step instructions, diagrams, parts locations and other important information here:
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