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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Mon, Jun-13-2016, 07:10:07 PM   #1
chriscar
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Default BMW E46 M3 hot restart, no crank

Hey guys, my M3 has an intermittent issue where it won't crank after it's been warmed up. Before I call a shop, here's a video showing the problem. It only happens on a warm restart, *NEVER EVER* first thing in the morning, or after sitting over 30 minutes or so. The issue cropped up late last summer, went away around the fall, and started happening again a few weeks ago. It's not battery related, but definitely has to do with heat.

I'd appreciate your thoughts, and input.


Thanks in advance,
Chris
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Old Mon, Jun-13-2016, 07:17:45 PM   #2
Drewster
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Default Re: BMW E46 M3 hot restart, no crank

My guess is your starter is on its last leg
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Old Mon, Jun-13-2016, 07:32:40 PM   #3
Jferrante
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Default Re: BMW E46 M3 hot restart, no crank

Yup starter would be my guess - heatsoak can cause a starter to not operate fully when warm but fine when cold.
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Old Mon, Jun-13-2016, 08:36:00 PM   #4
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Default Re: BMW E46 M3 hot restart, no crank

My starter died yesterday. Join the club. Lol
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Old Mon, Jun-13-2016, 09:07:43 PM   #5
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Default Re: BMW E46 M3 hot restart, no crank

Its ur starter. I changed it two months ago.
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Old Mon, Jun-13-2016, 11:27:52 PM   #6
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Default Re: BMW E46 M3 hot restart, no crank

Starter for sure. This is a common symptom with a lot of vehicles when a starter is going, going, gone and heatsoaked.
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Old Wed, Jun-15-2016, 02:47:28 AM   #7
TenaciousD
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Default Re: BMW E46 M3 hot restart, no crank

I just went through this. It's the starter.
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Old Wed, Jun-15-2016, 03:59:57 PM   #8
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Default Re: BMW E46 M3 hot restart, no crank

I wouldnt be so quick to assume its the starter, I had a similar issue and replaced the starter and it didnt help,turned out to be the clutch switch had issues with heat.
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Old Wed, Jun-15-2016, 05:16:13 PM   #9
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Default Re: BMW E46 M3 hot restart, no crank

Agree with the clutch switch...There have been quite a few posts on this with the same exact symptom and in the video you mentioned it took 7-tries of cycling the clutch pedal until you heard a click then, Vrooom!
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Old Wed, Jun-15-2016, 05:29:40 PM   #10
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Default Re: BMW E46 M3 hot restart, no crank

do you have a modified clutch stop?
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Discussing BMW E46 M3 hot restart, no crank in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)