2019 G310GS ABS issue

322 Views 13 Replies 4 Participants Last post by elau180, 1 d ago

DSM1217

First bike I’ve owned with ABS so I was careless with putting on the rear wheel after getting a new tire mounted and broke the wheel speed sensor by missing a spacer when reinstalling on the sensor side and riding it down the road about 40 yards. Speedo stopped working and AB’s warning lights on the cluster. Replaces the wheel speed sensor yesterday and reset the warning lights using motoscan and a Bluetooth reset tool. Problem is the warning lights come back on everything I ride it I’ve double checked that that I cleared all error codes in the ecu. Can damaging a speed sensor on the rear wheel cause other damage to the abs system? Getting error codes below. The Speedo does work now.

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ARBOLMANO

· #2 · 6 d ago

by Sensor replaced do you mean the tone ring? The ECU is sensing an off signal in rear. First spot to look is tone ring/sensor interphase. Gap correct? Tone ring square? Sometimes it takes a few on/off for the memory to reset and it won’t reset/turn on for a few hundred feet.

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DSM1217

Discussion Starter · #3 · 6 d ago

I replaced the damaged wheel speed sensor. The ring had the black color rubbed off in some places and is silver now from the old sensor when it contacted the ring. It doesn’t seem damaged other than the black color rubbed off. Does the color matter?

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ARBOLMANO

· #4 · 6 d ago

Eccentricity in tone ring? Color shouldn’t matter although black is beautiful.

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JerryG

· #5 · 4 d ago

You ground (grinded?) your sensor against your sensor ring and only replaced your sensor? The sensor senses the alternating colors, really alternating materials, on the ring to determine wheel speed. You damaged both; you need to replace both.

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ARBOLMANO

· #6 · 3 d ago

I had not thought about paint affecting the magnetic pulse generated by the holes in the tone ring. That totally makes sense. Colonel Jerry hit it, replace tone ring.
The sensor works by generating a field that gets pulsed by passing the tone ring past it. The holes in tone ring interrupt the field a “pulse” which is interpreted by ECU for speed calculation. Paint or lack of could for sure could cause a “disturbance in the force” but you should not need Luke Skywalker to fix.

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DSM1217

Discussion Starter · #7 · 3 d ago

I’ll try that, sadly that part is backordered country wide.

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JerryG

· #8 · 3 d ago

A used one from someone with good reviews should suffice...

BMW MOTORRAD G310R G 310 R GS 2015-2020 FRONT / REAR ABS SENSOR RING | eBay

Find many great new & used options and get the best deals for BMW MOTORRAD G310R G 310 R GS 2015-2020 FRONT / REAR ABS SENSOR RING at the best online prices at eBay! Free shipping for many products!

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ARBOLMANO

· #9 · 2 d ago

You can try removing the ring and painting it. Stranger things have happened. All units run on used parts. You should be able to ride w/o abs in the rear, Jerry G does this when he goes off road. Read through his posts to see how it works.

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JerryG

· #10 · 2 d ago

ARBOLMANO said:
You can try removing the ring and painting it. Stranger things have happened.

I don't think it's paint. I think the pattern is alternating magnetic and non-magnetic areas by which the sensor reads the speed.

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JerryG

· #11 · 2 d ago

ARBOLMANO said:
You should be able to ride w/o abs in the rear, Jerry G does this when he goes off road. Read through his posts to see how it works.

He's right. I have an on/off switch in my rear ABS sensor circuit. I ride most of the time with it off. You can read about it here...

disabling ABS

I was reading in another thread how someone on here disabled the ABS by reversing the sensor. Don't remember exactly where I saw that post but would like to know more. I also saw a YouTube video of a guy who mounted a switch too. Has anyone done that? The 22 models don't have a stock on/off...

www.g310rforum.com

That post also has a link to my earlier post on the subject. Read both completely.

If you disable your rear ABS, just remember and practice - if you lock up (i.e., skid) the rear wheel while braking, keep it locked up until you come to a complete stop. If you release a locked up rear wheel while still moving, you could have a serious high side crash.

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ARBOLMANO

· #12 · 2 d ago

Actually it’s those holes that generate a disturbance in the magnetic field. A pulse as the gap passes sensor And sensor has blip of steel pass by. Basic physics, pass steel through field and it generates electricity. Lots of blips and you’ve a frequency used for speed calculation.
Paint shouldn’t affect this to be honest unless it’s affecting the magnetic field. Perhaps some got paint smashed into holes, partial paint left behind. Also possible not paint but some sort of voodoo stuff by BMW (unlikely). Cleaning to repaint might rectify. Possably find problem during paint process, something bent.
my wag being the ring has gotten distorted during the de paint episode.
The ECU is reporting out of range values. If not tone ring, the remaining possibles are a bad sensor or incorrect sensor since just replaced or sensor wiring got impacted during episode.
Taking the sensor out of play with the Jerry G method should cause the unit to respond as Jerry’s bike did. If it does not then it’s sensor wiring.

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JerryG

· #13 · 2 d ago

ARBOLMANO said:
Actually it’s those holes

Holes, no; the only holes are the bolt holes and the center hole. Gaps and tines, yes. Otherwise, we're saying the same thing. The sensor reads either the gaps or the tines. Grind the sensor against the gaps/tines and it's likely both the sensor and the gaps/tines were damaged.