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2007 S550 Intermittent Starting

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Old 03-05-2017, 04:43 PM
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2007 S550 4 Matic
2007 S550 Intermittent Starting

My 2007 S550 starts intermittently without warning. Sometimes, without warning, when I turn the key or press the keyless start button nothing happens. In order to get it to start I have open the hood and bang on the driver's side fuse box and then, sometimes, it will start.

I have taken it to the dealer repeatedly and he can find nothing that solves the problem however I have paid to replace the starter, the fuse box, and the relays in the fuse box. At his suggestion I have had the Engine Control Module rebuilt.

Even so, the problem still occurs without warning. I would appreciate hearing from anyone who has had this problem.

I would appreciate hearing from anyone who has experienced this problem.
Old 03-06-2017, 09:54 PM
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Holy crap. How much do you have into it so far?
Old 03-07-2017, 08:21 AM
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You might have a bad ground somewhere in the vicinity. Or a wonky fusable link.

Have you tried with another key?

And dont bang on the fuse box. Pretty please.

Last edited by alx; 03-07-2017 at 08:26 AM.
Old 03-07-2017, 11:27 AM
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Originally Posted by alx

And dont bang on the fuse box. Pretty please.
Well it works on my Millennial Falcon when the hyperdrive is acting up. Just sayin'
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Old 03-08-2017, 10:16 AM
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Originally Posted by Mike5215
Well it works on my Millennial Falcon when the hyperdrive is acting up. Just sayin'
well, the moment i wrote "have you tried... " and "hitting her" was right there in my mind, but then i realized he already did that...

so...

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