Anti-lock brakes and TC alerts - BMW K1600 Forum : BMW K1600 GT and GTL Forums
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post #1 of 11 Old 06-14-2019, 07:50 PM Thread Starter
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Anti-lock brakes and TC alerts

Coming home from Americade, my bike starting showing the AB and TC alerts only when I am backing into a spot, while tethering the front brake lever. The lights come on solid, and don't go off unless I shut the bike off and on again. Then it works fine. If I ride off with the alerts on solid, I loose my cruise control and brake hold (makes sense).

Anyone else encounter this problem? I have 16K on my '16 GTL.

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post #2 of 11 Old 06-14-2019, 08:00 PM
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A wonky signal from one of the wheel speed sensors would disable TC, ABS, Cruise Control, and Hill Hold.

Not sure why it would do that only when you're going backwards though...

I wonder if a GS-911 would show you useful error codes?

Ken IBA# 366
'13 K16GTL & '09 K13GT-LD
Some people see the gas tank as half empty. Some see it as half full.
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Last edited by Meese; 06-14-2019 at 10:22 PM.
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post #3 of 11 Old 06-15-2019, 01:14 AM
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is this foot powered reverse or bike reverse

R80/7RT / K75RT / R1200RT / K1600 GTL - in the U.K.
Also Rans ( Honda C90 & CD175 & CX500 & ST1100, Suzuki GT250 (J) & X7, Puch Maxi), Coveted Honda CBX, Yamaha Martini XS 1300 & FS1E, Kawasaki Z900, Z1000 & Z650, Quasar, Suzuki GT750
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post #4 of 11 Old 06-15-2019, 03:46 AM
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Careful, that’s how my problems started. When I really needed the brakes they didn’t fail, but they were so ineffective it did worry me. I could not stop when I needed to, nearly hitting kangaroos on a wet road...
The dealership claimed it was only a dodgy ABS sensor on the front wheel, but I believe more work was done. The best indication of an impending fail was a violent pulsing of the front brake lever.
I’d suggest getting it fixed ASAP.

See
https://www.k1600forum.com/forum/bmw...ooks-like.html

https://www.k1600forum.com/forum/bmw...bs-sensor.html

Donna
(It’s all fun until I break a nail!)
Pink and Black K1600B

Last edited by Donna; 06-15-2019 at 03:51 AM.
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post #5 of 11 Old 06-15-2019, 09:34 AM Thread Starter
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Quote:
Originally Posted by Mole999 View Post
is this foot powered reverse or bike reverse
Fred Flintstone style…2016

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Originally Posted by Donna View Post
Careful, that’s how my problems started. When I really needed the brakes they didn’t fail, but they were so ineffective it did worry me. I could not stop when I needed to, nearly hitting kangaroos on a wet road...
Thanks. But if I start seeing Kangaroos in NY, then I think I have bigger problems that the Dealer can't fix
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post #6 of 11 Old 06-16-2019, 07:10 PM
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I had a very similar set of issues Tuesday on the way through Nashville with my 2018. Traction control, no cruise and the GPS went weird. Took it to bloodwork Wednesday morning. They read the faults, installed the latest ecu software. Service guy called it a recall. It fixed the problems. Best news is the Been tune stayed
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post #7 of 11 Old 06-16-2019, 08:24 PM
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They read the faults, installed the latest ecu software. Service guy called it a recall. It fixed the problems.
Interesting...

So we've now seen this issue on a '16 GTL, an '18 GTL, and maybe the same issue on an '18 B.

Hmm...

Ken IBA# 366
'13 K16GTL & '09 K13GT-LD
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post #8 of 11 Old 07-07-2019, 10:30 AM Thread Starter
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Quote:
Originally Posted by Meese View Post
A wonky signal from one of the wheel speed sensors would disable TC, ABS, Cruise Control, and Hill Hold.

Not sure why it would do that only when you're going backwards though...

I wonder if a GS-911 would show you useful error codes?
Update: My front wheel speed sensor was the culprit. It affected my ALB, TC, and CC when I hit a bump. Also, when I punched it hard in 2nd gear, my bike dropped power and the TC light came on.
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post #9 of 11 Old 07-07-2019, 11:46 AM
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Update: My front wheel speed sensor was the culprit. It affected my ALB, TC, and CC when I hit a bump. Also, when I punched it hard in 2nd gear, my bike dropped power and the TC light came on.
Yep, that would do it.

Dropping power with a TC light means the bike thinks the rear wheel is going much faster than the front. A bad front sensor can cause that.

Ken IBA# 366
'13 K16GTL & '09 K13GT-LD
Some people see the gas tank as half empty. Some see it as half full.
All I care is that I know where the next tankful is coming from...
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post #10 of 11 Old 07-07-2019, 06:34 PM Thread Starter
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That's what the dealer suggested.

The only thing that bothered me, was that they are a major NE exclusive BMW dealer/shop, and they didn't have the part in stock. I asked them to "borrow" one from one of the dozen or so GTL/GT/GA/B models in their showroom to save me a second 150 trip and 5 hours magazine time, but they weren't willing to bend the rules a little.

So it took me 300 miles and 12 1/2 hours of my life that I'll never get back, to remedy a simple sensor replacement. Luckily I have a little time left on my warranty, $-wise.

— Never cross a "bridge", without checkin' out the view! - me

— Life is too short to drive an ugly car. -me
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