Question about 1997 BMW 5 Series

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My 540i BMW wont start but it is not the batteries posts and the batteries are full.could it be the relay or the starter?

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Where do I find the starter relay fuse

Posted on May 22, 2012

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Yes, here is a test you can do. With the car in park or neutral and the parking brake on, short the hot terminal (one with the big red wire attached) of the starter solenoid to the smaller (ignition switch) terminal. Be careful not to let your screwdriver touch anything else, especially do not touch the big ground terminal closest to the starter motor. If the motor does not crank, the starter/solenoid is not working. If the motor cranks the engine, your ignition switch, starter fuse, or relay is bad or the start wire is open. You can further troubleshoot this by interrogating the starter relay (see tip at http://www.fixya.com/cars/r6022358-relay_check), but only some cars have a starter relay.

Posted on Sep 17, 2010

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