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How can I bypass the starter on my bmw to get it started

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Basically how do you get 12vdc to the starter on an intermittent basis, meaning turning it over till it starts. Short answer: you can't. there's key recognition circuitry, let's say you bypass all that, ok: so then you have to deliver 12vdc at 500amps or so....that's a really thick wire and a heavy duty switch. Anything less than able to handle that WILL start a fire. It's done through a relay. I'm an electrical engineer, and could do it if I had to but really, all the crap necessary to do it right...just get it fixed.

Posted on May 02, 2015


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Kind of hard to bypass the starter, it's what turns your motor over. You'd have to push-start it.
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Could be the alarm system, the key proximity sensor, etc.
But start with the easy stuff first, like the neutral safety switch, etc.
If it does not start in park, try neutral.
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it sounds like it is either a weak battery or the solonoid on the starter motor

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sounds like either a sticky solinoid in the starter motor OR a faulty solinoid at the base of the gear selector.

1st try tapping the starter motor with a metal objecy eg screwdriver while someone else attempts to start. if it turns over you need to remove the startermotor & service. OR

If it's the selector solinoid try shifting the gear shift up & down while starting. if it turns then you need to replace the solinoid. or you can bypass it. just ask & i'll tell you how. hope this helps.

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