F800GS ABS problem - need help

Motowalt · 02-24-2010, 02:55 PM

Hey guys, I did a search, but unsuccessfully.

Just installed new tires (Heidenau K60's from the previous Battlewings) and now the abs light comes on and the front brakes pulse as if abs is engaging and the lever feel is different.

Getting ready to head out to Big Bend and need to get this remedied asap.

Can anyone please advise?

thanks!

LILGS · 02-24-2010, 03:42 PM

Quote:

Originally Posted by Motowalt

Hey guys, I did a search, but unsuccessfully.

Just installed new tires and now the abs light comes on and the front brakes pulse as if abs is engaging and the lever feel is different.

Getting ready to head out to Big Bend and need to get this remedied asap.

Can anyone please advise?

thanks!

were the ABS sensors damaged when rims were removed off bike?

have a physical look and inspect wiring and sensors..

if the tyres are matching the placard there shouldn't be a problem!

Motowalt · 02-24-2010, 03:48 PM

I don't believe so...

I removed the rear sensor, but forgot to remove the front one before wheel removal...however, I was using a front Pit Bull stand and it came off and went back on smoothly...

Motowalt · 02-24-2010, 05:04 PM

I went back an cleaned the front and rear ABS sensors...no nicks or damage seen in the sensor or wires.

Also pulled and re-installed the front calipers.

ABS still engaging/pulsing when front brake is applied.

After a few tries, the ABS light comes on as if it's showing the ABS is now disengaged and the brakes then work fine. (but I assume I have no ABS at that point...)

Any ideas?

I'll be riding mostly dirt this weekend, so nt having ABS should't be an issue, other than I don't know the cause...

LILGS · 02-24-2010, 05:08 PM

Quote:

Originally Posted by Motowalt

I went back an cleaned the front and rear ABS sensors...no nicks or damage seen in the sensor or wires.

Also pulled and re-installed the front calipers.

ABS still engaging/pulsing when front brake is applied.

After a few tries, the ABS light comes on as if it's showing the ABS is now disengaged and the brakes then work fine. (but I assume I have no ABS at that point...)

Any ideas?

I'll be riding mostly dirt this weekend, so nt having ABS should't be an issue, other than I don't know the cause...

tell us a bit about the tyres you put on! sizes etc

Motowalt · 02-24-2010, 05:37 PM

The new tires are semi-knobbies.
90-90 21" front (stock size)
140-80 17" rear

I also put the recommended amount of Ride On liquid tire sealant into each tire
(5 oz front, 8 oz rear)...this is the first time I've used Ride On...

There is no appareant vibration from the sealant...the wheels feel balanced.

MonsterJ · 02-24-2010, 05:44 PM

Walt, I don't think it's your tire combo. I've got the same exact tires and I haven't had a problem with my ABS.

GB · 02-24-2010, 06:18 PM

The ABS sensor must be removed prior to removing the front wheel. You may have damaged it.

LILGS · 02-24-2010, 06:45 PM

Quote:

Originally Posted by Gadget Boy

The ABS sensor must be removed prior to removing the front wheel. You may have damaged it.

yer sounds like it..

the tyre combo isnt a problem, it has to be a sensor related problem. perhaps remove your -ve battery terminal and refit it after 1 minute. it should reset the computer.

see how that goes..

Motowalt · 02-24-2010, 07:47 PM

I'm not sure how I could have damaged the sensor..

But I'll try disconnecting the battery and hopefully it will reset.

The bike is loaded on the trailer so we'll mess with it after we get there.

Thanks for everyones help.

RedHawk47 · 02-24-2010, 08:54 PM

Simple question: Is the tire in correctly, or did you flip sides?
In other words, is the ABS slotted rotor on the correct side?

Motowalt · 02-25-2010, 04:37 AM

Double checked that one
Yes it's on the correct side...
Hmmmm..

Well off to Big Bend, hope to have some pics for you all..

GB · 02-25-2010, 05:24 AM

Quote:

Originally Posted by Motowalt

I'm not sure how I could have damaged the sensor..

But I'll try disconnecting the battery and hopefully it will reset.

The bike is loaded on the trailer so we'll mess with it after we get there.

Thanks for everyones help.

Have fun at Big Bend and come see us in Ride Reports with lots of pics

Btw, In the Helge Pedersen Globeriders DVDs on the 800GS, he stresses how important it is to remove the ABS sensor prior to removing the wheel.. anyway, take it to the dealer and see what they say.. sometimes the best lessons learned are from one's own pocket.. DAMHIK

Airbornexts912 · 02-27-2010, 06:15 PM

Had the same problem. Different tires....I put the stockers back on and the problem went away put the TKC's on and the problem came back....the ABS on that bike SUCKS!!!!! Almost cost me my life on road with TKC's...the fix after all the problems with the 800 GS???? IE bad front rim, poor chain, axle recall, I could go on and on, but sell it and buy a KTM...

dukedar · 02-28-2010, 08:05 PM

Quote:

Originally Posted by LILGS

yer sounds like it..

the tyre combo isnt a problem, it has to be a sensor related problem. perhaps remove your -ve battery terminal and refit it after 1 minute. it should reset the computer.

see how that goes..

Resetting the computer by disconnecting the battery will also bring up the 'Service Due' indicator won't it?

I am not sure if it resets after a minute or two, but I swapped the pig tails for my battery tender and up popped the 'Service Due' date.

From there it is a dealer reset unless you have the GS-911 reader. Just saying...

02-24-2010, 02:55 PM	#1
Motowalt ^OP UNSTOPPABLE! Joined: May 2008 Location: Texas Hill Country Oddometer: 414	F800GS ABS problem - need help Hey guys, I did a search, but unsuccessfully. Just installed new tires (Heidenau K60's from the previous Battlewings) and now the abs light comes on and the front brakes pulse as if abs is engaging and the lever feel is different. Getting ready to head out to Big Bend and need to get this remedied asap. Can anyone please advise? thanks! __________________ AMA MSTA Motowalt screwed with this post 02-24-2010 at 05:05 PM

02-24-2010, 03:48 PM	#3
Motowalt ^OP UNSTOPPABLE! Joined: May 2008 Location: Texas Hill Country Oddometer: 414	I don't believe so... I removed the rear sensor, but forgot to remove the front one before wheel removal...however, I was using a front Pit Bull stand and it came off and went back on smoothly... __________________ AMA MSTA

02-24-2010, 05:04 PM	#4
Motowalt ^OP UNSTOPPABLE! Joined: May 2008 Location: Texas Hill Country Oddometer: 414	I went back an cleaned the front and rear ABS sensors...no nicks or damage seen in the sensor or wires. Also pulled and re-installed the front calipers. ABS still engaging/pulsing when front brake is applied. After a few tries, the ABS light comes on as if it's showing the ABS is now disengaged and the brakes then work fine. (but I assume I have no ABS at that point...) Any ideas? I'll be riding mostly dirt this weekend, so nt having ABS should't be an issue, other than I don't know the cause... __________________ AMA MSTA

02-24-2010, 05:37 PM	#6
Motowalt ^OP UNSTOPPABLE! Joined: May 2008 Location: Texas Hill Country Oddometer: 414	The new tires are semi-knobbies. 90-90 21" front (stock size) 140-80 17" rear I also put the recommended amount of Ride On liquid tire sealant into each tire (5 oz front, 8 oz rear)...this is the first time I've used Ride On... There is no appareant vibration from the sealant...the wheels feel balanced. __________________ AMA MSTA

02-24-2010, 05:44 PM	#7
MonsterJ I have motopsychosis Joined: Sep 2008 Location: Bay Area, CA Oddometer: 249	Walt, I don't think it's your tire combo. I've got the same exact tires and I haven't had a problem with my ABS. __________________ -Nooner Temple, TX -> Cape May, NJ -> Mobile, AL -> ECity, NC -> Kodiak, AK -> Mobile, AL -> Sacto, CA -> Cape Cod, MA -> New London, CT -> San Francisco, CA -> Juneau, AK (summer of '13) -> where to next?

02-24-2010, 06:18 PM	#8
GB Mod Squad Joined: Aug 2002 Location: Toronto, ON Oddometer: 53,467	The ABS sensor must be removed prior to removing the front wheel. You may have damaged it. __________________ ADV decals, patches & flag? Here

02-24-2010, 07:47 PM	#10
Motowalt ^OP UNSTOPPABLE! Joined: May 2008 Location: Texas Hill Country Oddometer: 414	I'm not sure how I could have damaged the sensor.. But I'll try disconnecting the battery and hopefully it will reset. The bike is loaded on the trailer so we'll mess with it after we get there. Thanks for everyones help. __________________ AMA MSTA

02-24-2010, 08:54 PM	#11
RedHawk47 Adventurer Joined: Oct 2006 Location: Berthoud, CO Oddometer: 354	Simple question: Is the tire in correctly, or did you flip sides? In other words, is the ABS slotted rotor on the correct side? __________________ Dan It's never too late to have a happy childhood. -- Tom Robbins How I spent my summer vacation - Alaska 09 BMW F800GS 99 KLR 650 A13

02-25-2010, 04:37 AM	#12
Motowalt ^OP UNSTOPPABLE! Joined: May 2008 Location: Texas Hill Country Oddometer: 414	Double checked that one Yes it's on the correct side... Hmmmm.. Well off to Big Bend, hope to have some pics for you all.. __________________ AMA MSTA

02-27-2010, 06:15 PM	#14
Airbornexts912 Adventurer Joined: Oct 2008 Oddometer: 65	well Had the same problem. Different tires....I put the stockers back on and the problem went away put the TKC's on and the problem came back....the ABS on that bike SUCKS!!!!! Almost cost me my life on road with TKC's...the fix after all the problems with the 800 GS???? IE bad front rim, poor chain, axle recall, I could go on and on, but sell it and buy a KTM...

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