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BMW R-Series Discussions of the Boxers EXCEPT the GS/GSA

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  #1  
Old 11-08-2017, 10:56 PM
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R1200RS cold start reluctance

Suddenly, my R1200RS has become resistant to readily starting when cold. I can hold the starter button for several seconds as it turns over and it refuses to fire. However, when I release the starter button momentarily and try again, it fires off. Has anyone else had this issue?? Any ideas on what the problem could be??
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  #2  
Old 11-08-2017, 11:20 PM
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Re: R1200RS cold start reluctance

A buddy of mine with a '15 GS had very similar issues and it ended up being a bad starter, with ECU maps that were half European and half US. Go figure. The problem wasn't always there, rather, it developed slowly.

BMW remapped it, replaced the starter and the battery. Problem gone.
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Old 11-09-2017, 12:40 AM
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Re: R1200RS cold start reluctance

Yes, it is a common event in 14 and 15 GS bikes. Fuel mapping and adaptive values problem. My 15 S1000R bike had the problem. I have heard that F bikes too are affected. The R bikes grow out of it in about 1500 miles generally. I got my S bike to function properly by after failure to start turn off the key for a few seconds and try again. On the S bike it was so bad it took 4 or 5 attempts. But it learned to knock it off in about 10 days. The R bikes seem to have only one failure to start and start right up on the second try. It does go away. That turn off the key thing was told to me by a shop manager. I told him bull shet at the time. But he was right. I think it is some small piece of software that BMW needs to mess with but won't.
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Old 11-09-2017, 08:50 AM
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Re: R1200RS cold start reluctance

My '16 R/RS would do that once in a while. I held the starter button down for more than 5 seconds once just to see what would happen. Nothing- and I believe the starter would have caught fire or the battery would have gone flat before the engine fired. Released the starter button and tried again- instant fire up. After that, if it didn't fire immediately, I would release and try again. The '17 hasn't done that yet. I can't say if it is the ignition system or the fuel system, but I suspect the fuel system not initiating when that happens. Call it one of those "quirks".

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Old 11-09-2017, 09:23 AM
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Re: R1200RS cold start reluctance

Quote:
Originally Posted by Kneedragger
Suddenly, my R1200RS has become resistant to readily starting when cold. I can hold the starter button for several seconds as it turns over and it refuses to fire. However, when I release the starter button momentarily and try again, it fires off. Has anyone else had this issue?? Any ideas on what the problem could be??

The double tap start seems to affect some Wethead bikes and not others.
I have not seen a fix from BMW and as of a month ago the shop has not seen a fix from BMW.
If it doesn't start immediately on the first try release the button and try again. It will start on the 2nd try.
Debbie's 2016 would do it sometimes and mine does not.
On our Kentucky trip I noticed her RS was needing the double tap more than normal.
Before going to Arkansas I took her bike to the shop and asked them to load test the battery. It showed it needed to be replaced. It was replaced under warranty and the service manager mentioned the new battery was larger with more cranking power.
When I saw her battery was weak I took my bike in and it also needed a new battery.
On the Arkansas trip her bike always started on the first try.
We purchased our bikes 19 months ago and have 22,000 and 23,000 miles on them.
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Old 11-09-2017, 09:57 AM
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Re: R1200RS cold start reluctance

I haven't gotten around to installing a fuse block yet, but I have my radar detector and heated gear connection wired directly to the battery. I keep the radar detector unplugged at the unit when not riding, so it doesn't seem that either of those items would cause a problem. Mine cranks over readily but refuses to fire off on the first try, so it doesn't seem to be an obvious battery issue, although I haven't had it load tested. I've had OEM battery failures on other new BMWs, but they occurred very suddenly. This cold start issue just surfaced after 8000 miles.
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Old 11-09-2017, 10:01 AM
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Re: R1200RS cold start reluctance

Quote:
Originally Posted by Kneedragger
I haven't gotten around to installing a fuse block yet, but I have my radar detector and heated gear connection wired directly to the battery. I keep the radar detector unplugged at the unit when not riding, so it doesn't seem that either of those items would cause a problem. Mine cranks over readily but refuses to fire off on the first try, so it doesn't appear to be a battery issue although I haven't had it load tested.... this issue just surfaced after 8000 miles.
Exactly what my friend's WC did, then the battery started to degrade...

Oh, and there are documented water pumps issues, so pay attention to that also.
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Past Bikes
'04 K1200RS with Ohlins (traded for GSA)
'11 F800R (traded for GSA)
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Old 11-09-2017, 10:29 AM
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Re: R1200RS cold start reluctance

Quote:
Originally Posted by Kneedragger
Mine cranks over readily but refuses to fire off on the first try,

Ours would spin over fast like they had healthy batteries.
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Old 11-09-2017, 10:46 AM
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Re: R1200RS cold start reluctance

My RS did the same thing and as metioned it did grow out of it and I've not had a problem since. It would turn over and over but not fire. release the starter and them it would start right up on the second try.
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Old 11-09-2017, 10:52 AM
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Re: R1200RS cold start reluctance

Sounds like, hmmm, that 'they all do that.'
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Current Bikes-The Perfect Combination
'15 R12GSAW 'The I-BMW Pussy Bike'
'09 K1300S 'fits me like a glove' with Wilbers
Handy Motorcycle Lift

Past Bikes
'04 K1200RS with Ohlins (traded for GSA)
'11 F800R (traded for GSA)
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