Two amigos help needed

just adding clarity its a normal designed to fail expensive issue and nothing untoward has happened. The light came, on you go to BMW give them £2000 they wash the bike and the lights gone out. Just like they made it


While I get that point, I think it's a tad too cynical, for me anyway. We all know the dealers pray on the ignorance of customers etc. It's an old story.

Sent from my SM-G975F using Tapatalk
 
Uturn

Just back ridden bike speedo not working as you suggested and after 5 minutes back working so looks like the rear censer as you suggest, will order new one and while I am at it change the oil in the drive shaft to see if it’s contained.

Many thanks if we ever meet a free beer or beers on me.

Cheers
Neil


Sent from my iPhone using Tapatalk
 
Uturn

Just back ridden bike speedo not working as you suggested and after 5 minutes back working so looks like the rear censer as you suggest, will order new one and while I am at it change the oil in the drive shaft to see if it’s contained.

Many thanks if we ever meet a free beer or beers on me.

Cheers
Neil


Sent from my iPhone using Tapatalk

Excellent :thumb2

The ECU allots a given time for the rear sensor to wake up and if it doesn't, it switches to the front sensor to get it's speed/distance info. so, (usually) it's a dead give away.

Hope it works for you :thumb2
 
The ECU allots a given time for the rear sensor to wake up and if it doesn't, it switches to the front sensor to get it's speed/distance info. so, (usually) it's a dead give away.

that's an interesting idea. so what do you see in diagnostics at this stage?

A K1300 has the same can bus, the same abs module, and the same engine ecu. When the rear sensor gave up on my K1300 the TC went mental and it was impossible to ride the bike until you turned it off. Yet the ABS was perfectly happy and continued to work correctly with NO errors at all, and the speedo was 100% normal at all times with no glitches or drop outs. A mate had his rear sensor go on his k1300 and was over a year and 5 visits two main dealerships, before he resolved it himself!

When my K1300 went in under warranty they gave it back 3 hrs later saying they had replaced the front sensor, I went up the road and it was the same. They couldn't believe it. Two hours later they decided it must be the rear. What confused them was the dealer diagnostics at all times claimed it was a front sensor fault. The tech reasoning why the ABS wasn't playing up was the ABS doesn't really care about the quality of the signal, so long as there is one. But the TC must have identical quality data to manage its brain. When the data was odd the ABS was Ok and the TC just said fault and threw the first fault code on the list (which is the front sensor).

Point of the post is if the rear is playing up and the speedo starts to rely on the front sensor data can / does this put the diagnostic fault finding in a pickle?
 
My brain hurts after reading that :)

no, no pickle in my experience anyhow. One of a couple of faults is registered in a GS911 which are, to the best of my memory something akin to either, incoherent signal or electrical fault on rear sensor.
 
Might be worth getting any metallic crap,off the sensor before buying a new one, original might be fine after cleaning.


Your final drive may be another story entirely if enough metal has come from somewhere to upset the signal...
 
after my mates fun on his... the gist (from both BMW dealerships) was, its usually broken wires inside the ABS sensor loom to the wheel. Sometimes they tie it down so much the suspension movement works one area and over the years it gives up at that point.

Not that same on a Mercedes - they developed special designed to die copper inside the sensor heads.
 
Might be worth getting any metallic crap,off the sensor before buying a new one, original might be fine after cleaning.


Your final drive may be another story entirely if enough metal has come from somewhere to upset the signal...

He's already had this advice further up the thread :thumb2
 


Back
Top Bottom