BMW K1200, K1300, and K1600 Forum banner

1 - 20 of 28 Posts

·
Registered
Joined
·
273 Posts
Discussion Starter #1
Had the hot start wiring mod done today, nothing to report as yet, as the bike never did it all the time anyway, and I probably wont tell if its definately cured for a week or 2, Ill keep you posted.

As a sidenote, the dealer lent me a new R1200RT SE for the day so I could still work.
This was the BM that I also considered and at one point after getting the K did wonder whether Id bought the right bike, well, I definately bought the right bike, and its not all about power either, though that does come into it, sorry boxer fans, compared to the mighty K, its slow, and I mean real slow, at 70 to overtake with any real rapidness required 2 clicks down, the K I can easily leave in top. But the real surprise after reading tests, is that I found the bike really wallowy, even with ESA in sport, and it didnt want to hold a line anywhere near as confidently as the K. Plus points?, Tad comfier, better screen, by a mile, and the Radio, this last thing surprised me as Id always thought a radio on a bike really silly, but as I got up onto the motorway, Freefalling( Tom Petty) came on and at 75 mph, it was still fairly audible, the sun was shining, I was on a bike, and Tom Petty in my ears, couldnt have been better :teeth
 

·
Premium Member
Joined
·
2,680 Posts
Special-K said:
Had the hot start wiring mod done today, nothing to report as yet, as the bike never did it all the time anyway, and I probably wont tell if its definately cured for a week or 2, Ill keep you posted.

As a sidenote, the dealer lent me a new R1200RT SE for the day so I could still work.
This was the BM that I also considered and at one point after getting the K did wonder whether Id bought the right bike, well, I definately bought the right bike, and its not all about power either, though that does come into it, sorry boxer fans, compared to the mighty K, its slow, and I mean real slow, at 70 to overtake with any real rapidness required 2 clicks down, the K I can easily leave in top. But the real surprise after reading tests, is that I found the bike really wallowy, even with ESA in sport, and it didnt want to hold a line anywhere near as confidently as the K. Plus points?, Tad comfier, better screen, by a mile, and the Radio, this last thing surprised me as Id always thought a radio on a bike really silly, but as I got up onto the motorway, Freefalling( Tom Petty) came on and at 75 mph, it was still fairly audible, the sun was shining, I was on a bike, and Tom Petty in my ears, couldnt have been better :teeth
What is this "Hot start mod wiring" mod you speak of? :dunno:

As to the audio on the loaner RT, my old RT had a radio and cassette player in it too. However, BMW is "Not Noted" for good audio gear - period. I know the owners of the K1600GT haven't been impressed with the BMW audio quality either on their forum. I replaced it with a better Kenwood (more powerful output) and higher wattage Polk speakers on the RT that don't distort like the BMW speakers do. The BMW speakers got so bad they eventually "squeaked loudly" just by pushing down on the horn of the speaker. Audio shop loved that one: "Squeaky. Squeaky. Squeak." They think it was the rust that was occurring on the magnetic speaker core.

However, sound quality still wasn't as good due to wind turbulence on the RT. It's better than the KT by far (and maybe why they didn't offer it on that bike) so I went to the Autocom Pro-AVI and some Ultimate Ears UE-11 in-ear musician's phones later. That is about as 'audiophile' as you can get on a bike and listen to music at far lower sound levels as the UE-11's drown out maybe 32dB of wind noise too. Beats anything out there and you can distinguish the really crappy audio from any Apple Mp3 player, or a Microsoft Zune (now defunct), and the far better Sony X-1060 (now defunct too) series music player.

I liked the Autocom Pro AVI and UE-11 phones setup so well that the S1000RR and the K1200GT has both systems now. I do wish the Autocom Pro-AVI had a better noise threshold though as I can make out a faint amount of "amplifier hiss" with the UE-11 phones only. Anything less than those I can't hear it, but those multi-speaker phones are around $1,200 too.

As to the bike handling, I think my old RT handled the twisties much better than the GT. A lot of the GS models can outrun the GT in the canyons. Maybe the rider or the rake and tail of the steering between the two models too. The boxer has that natural "gun it and it will lean over quality" that the GT doesn't too. Of course, the GT will outrun them in the straights.

Okay. The RT didn't spend nearly the amount of time in the shop either over the GT. I think there was only one time but it was the speedometer's odometer that read in Kilometers where the dial was in MPH in the states. Sort of odd that slipped through the cracks. No final drive issues in nearly 100K miles too (Thank you Amsoil gear oil maybe?). Luckily, the 1-1/2 year old S1000RR has spent zero time in the shop so far. I did manage to do my own warranty recall on the airbox hose though on it as my selling dealer is 400 miles one-way. No big deal. Helps to have a decent dealer to work with on those issues.


Mack
 

·
Registered
Joined
·
273 Posts
Discussion Starter #3
GMack said:
What is this "Hot start mod wiring" mod you speak of? :dunno:


Mack

My GT like a few others has exhibited what seems like a flat battery on occasion, its only when the bike is fully warmed up and it only does it every now and then, and only if you try to restart the bike within 10 mins or so. Apparently its down to the wiring on some bikes between alternator/starter motor and battery, thats about all I know, and the modified wiring should cure it. I didnt see the wiring, but it took them about 3 hours to fit, so must take a fair bit of stripping.
 

·
Addict-oholic
Joined
·
1,416 Posts
Special-K said:
My GT like a few others has exhibited what seems like a flat battery on occasion, its only when the bike is fully warmed up and it only does it every now and then, and only if you try to restart the bike within 10 mins or so. Apparently its down to the wiring on some bikes between alternator/starter motor and battery, thats about all I know, and the modified wiring should cure it. I didnt see the wiring, but it took them about 3 hours to fit, so must take a fair bit of stripping.
After 2 times "waiting", I just opted for an Oydessy rather than playing with an additional wire. Since then, who cares how "hot" the bike is.. I did a 100 mile ride at very low speeds( 10mph), stopping and starting the engine, and it worked fine . The 100 miler was as a volunteer escort for a charity bicycle ride
 

·
Registered
Joined
·
752 Posts
A new battery will cover the problem but it isn't a fix. It doesn't matter what kind of battery you have, at some point in its life the excessive voltage drop has the potential to cause a hot no-start condition if your bike is affected by the problem. With the 'hot start' update any battery will be problem-free further into its lifespan so I see the fix as a good idea regardless of what type of battery you use.
 

·
Registered
Joined
·
213 Posts
Special-K said:
My GT like a few others has exhibited what seems like a flat battery on occasion, its only when the bike is fully warmed up and it only does it every now and then, and only if you try to restart the bike within 10 mins or so. Apparently its down to the wiring on some bikes between alternator/starter motor and battery, thats about all I know, and the modified wiring should cure it. I didnt see the wiring, but it took them about 3 hours to fit, so must take a fair bit of stripping.
I'll be interested to hear if it works. I had the same problem and after lots of back and forth with the factory tech and dealer, the heavier wire was supposedly installed on mine. However, the bike never came home so do not know whether the fix worked. I realize an Odyssey would likely have solved (or at least masked) the problem, but I am kind of funny about having to pay my own money to resolve a factory problem on a $23000 bike. I would feel the same about paying for the jump guard if I still had the bike. :)
 

·
Registered
Joined
·
213 Posts
robday said:
Is the mod just heavier wire? Or additional wire?
I don't recall exactly what the fix was other than it lowereed the resistance from the battery. I assumed it was heavier guage wire This was about a year ago when bmw first began realizing the problem was something other than a faulty battery.
 

·
Registered
Joined
·
273 Posts
Discussion Starter #9
Well I know I said it would probably take a week or two to decide if it was fixed or not, but I can already tell its much better. Been out today and did a fair bit of stopping and starting, before the mod even if the bike started ok, it always sounded a bit slow to turn when it was hot. Today everytime I stopped and started the motor span over really fast like its always done first thing in the morning, so yep, looking good.
 

·
Registered
Joined
·
118 Posts
Hi,
Can someone explain what is this hot start mod? I experienced the no start condition in heavy traffic a couple times and was thinking the battery was showing its age. I'll probably switch to an Odyssey in the spring. Winter is nearby and it would be a mod I could do during the winter time.

Thanks
 

·
Registered
Joined
·
273 Posts
Discussion Starter #11
SylvainB said:
Hi,
Can someone explain what is this hot start mod? I experienced the no start condition in heavy traffic a couple times and was thinking the battery was showing its age. I'll probably switch to an Odyssey in the spring. Winter is nearby and it would be a mod I could do during the winter time.

Thanks
I wish I had asked to see the part now, but unfortunately I didnt. My understanding from the tech guy is that an upgraded wiring harness was fitted, how much of the wiring harness I have no idea, but it took them a good 2 to 3 hours to fit. I had to hound them a few times about this before they would open a puma case and get the go ahead from BMW.
 

·
IBR# 366
Joined
·
3,145 Posts
Special-K said:
I wish I had asked to see the part now, but unfortunately I didn't.
I wish that you had gotten part numbers for this mod . . . :)
 

·
Looking for better limits...
Joined
·
5,163 Posts
From the "stories" I've heard, it comes down to the starter getting warm when sitting. Starter then draws more current to spin. Most heard example was stopping to refuel and weak or no-start when getting ready to leave. Say 10-15 minutes. One I had as a loaner was dead after refueling. 30 minutes later, it was all good to go.
I believe the current fix is using larger wiring from the battery to the start relay, and larger wire from the starter relay to the starter. It's a 12v system, so 1/10's of a volt can make a difference, and the larger wiring will have a smaller voltage drop.

Service department I usually go to just added an additional cable (matching the existing original cable) and solved it that way before the larger cables became available.



100% free webcam site! | Awesome chicks and it is absolutely free! | Watch free live sex cam - easy as 1-2-3
 

·
Addict-oholic
Joined
·
1,416 Posts
Hot start Mod to be done

At Max BMW, Danbury, CT, we discussed this very problem. i had it in early September and blamed it on the POS BMW battery. So, I put in an Odyssey and the problem has gone away.
The service manager has heard of this problem, previously and will order the parts to do the mod when i bring the bike in for service at the end of the month. They checked my old battery and it is still good, just needs a charging
.
 

·
Registered
Joined
·
27 Posts
Having had the hot start problem and being told there's nothing wrong with the battery, I put
an Odyssey in to see what would happen.
This was last December.
The hot-start no-start was alot better but on occasion it would hesitate to crank over.
Shortly thereafter my R11RT needed a battery, so I stuck the Ks old battery in and its been
starting fine, for almost a year now.
So it sure would be nice to know exactly whats involved in this latest modification for the
hot-start problem.
In looking at the parts film they show a one piece engine wiring harness.
I can't see a BMW shop butchering and splicing in wires.
But maybe they do.
 

·
Registered
Joined
·
5 Posts
robert85 said:
Does anyone know the relay connections for the Mod-wise hot start mod?
do you mean the modwise hot start kit for tvr's,if so you will find the info on pistonheads forum shttp://www.pistonheads.com/gassing/forum.asp?h=0&f=8
 

·
Registered
Joined
·
752 Posts
Again, if something is causing excessive voltage drop between the battery and starter (either too small a gauge wire, or an inadequate stater solenoid, or perhaps the starter is simply drawing more current than originally envisioned because BMW didn't catch what can sometimes apparently happen with a hot slant-K engine) then a new battery, Odyssey or otherwise, will not fix the problem. It may help cover it up for a while but it is not a fix (unless you like tossing your battery a lot sooner than should be necessary.)
 

·
Registered
Joined
·
2 Posts
Voltage drop

I just experienced this on Saturday and thought I had a bad battery on 08 k12gt. I took the battery out and the dealer tested it and found it to be good.
He said from the description of the problem it sounded like the wiring mod was in order.
I have to bring him the bike though so he can measure the Voltage Drop before BMW will authorize the fix.
Does anyone know what the number should be that BMW is looking for? Just in case it doesn't happen to occur for the test. If we can get the right reading he's OK with using that info.
 

·
Registered
Joined
·
478 Posts
The hot stat is certified for all k bikes from 2009 and up. Mine , 2013 k1300S started doing it after a year old. Symptom - riding the bike comes up to temp. Sitting in traffic, stalled bike and would not re start , like battery was dead. 5 mins later started like normal. Then was riding and had to stop for fuel. Attempted restart and nada- like a dead battery. Waited 5 mins and started like normal. This is a know issue but not an automatic fix. Procedure was to bring it in to dealer, then they get it up to temp. Then they test the voltage drop at starter, forgot what the #s are but mine showed unacceptable drop,
Then BMW authorises warrantee fix. When I brought my bike in it was already hot. Tech checked it immediately and said yep, the fix is an additional heavier gauge wired in parallel to OEM from relay to starter. Apparently the oem wire is too small and when she gets got the voltage drops simulating a low battery. Had it done last month and it does make a big difference. Hot or cold she turns over immediately.
 
1 - 20 of 28 Posts
Top