Brake failure warning light arrggghhhh!

[Bendy toy]

The bke works fine with a servoectomy. Unfortunately that also loses the ABS.

The 08 non servo has the same crap rear brake which is also over-used by the linked braking system. OEM organic pads will manage 4K miles if you never touch the brake pedal.
I now use sintered and put up with how the back end squats every time I touch the brake lever.

My previous bike was the ultra reliable Diversion 900 but in spite of the BMW annoyances the Yamaha was not a fraction of the that bike that is the R1200GS.

 

[jwpzx9r]

Not sure if the quote above will work, as taken off another thread. Anyway, had the diagnostics done at Stroud Motorcycles, and Mike there suggested the codes point to the ABS motor needing replacing. I had contacted ecutesting, who said they needed my pump number to say whether they could rebuild, as their website stated 06 on models, rebuild at £300 with lifetime warranty. As Steptoe says they won't rebuild those on 05 models, this isn't going to be my £500 inc removal & refit saviour. I've been advised around £2k to replace ABS pump inc labour. On a bike worth around £3.5k. When I say £3.5k, that's after spending £2k. So the thing is worth £1500 as I do not have £2k I can justify spending on it.

So I am faced with a bike worth less than the price of an ABS motor. FFS. The bike is in really good condition with 49k miles, and practically worthless. How shit is this. Wish I'd stuck with am old TDM850 I bought for £1200 and sold for the same 2 years on...

Well to be honest there is no way I would be giving up on the ABS/servo unit without getting the thing off and having a gander at it. I think half the problems with these bikes is the F'n electrics, the slightest thing F's up just about anything. I never use the rear brake lever to be honest I just use the front lever. I had a flashing ABS triangle about a month back I switch the bike off and then restarted it... no problem since but there must be something that can be done with these units it just has to be investigated

 

[kevingambrell]

Did I not see a write up on a German company that rebuilds these pumps?
Iv looked back a few pages in the old posts but cant see it.
At the end of the day this is just a reasonably complicated hydraulic pump
with a dose of electronics chucked in for good measure. Surely on that basis it
should be possible to rebuild one.
If any one has a buggered one they dont want id love to take one apart to see how
they tick.

 

[kevingambrell]

Sorry just a thought and im sure you have tried. Is it worth calling motorworks to see if they have a used one
for sale.

 

[Steptoe]

Sorry just a thought and im sure you have tried. Is it worth calling motorworks to see if they have a used one
for sale.

In my experience of fitting used servo/abs modulators i don't think they like sitting on shelf's for long after being romoved and being sold.. They don't seem to last very long... all very well the supplier giving you a 6 month guarantee but they don't include the cost involved to have to replaced.

 

[Steptoe]

Did I not see a write up on a German company that rebuilds these pumps?
Iv looked back a few pages in the old posts but cant see it.
At the end of the day this is just a reasonably complicated hydraulic pump
with a dose of electronics chucked in for good measure. Surely on that basis it
should be possible to rebuild one.
If any one has a buggered one they dont want id love to take one apart to see how
they tick.

This is the Servo/ABS modulator i'm referring to below, not the post 2007 ABS modulator..

A company in germany took a few of my old units away and were going to offer a refurb unit to the trade.
Being german they would have to put some units through the TUV test to be able to sell them in Germany. This was going to cost them a lot of money, plus they then had to offer a warranty and then offer them at a competitive price.

After doing tests and costings and being unable to improve on the the unreliability of the unit which meant they expected a lot of warranty exchanges, which would in turn effect their reputation and in the great scheme of things quite a small amount of business with very little profit but lots of headaches, they decided against offering reconditioned units.

From what they said to me, and this is a rough outline, seems the main problem are two discs inside the unit that spin at high speed and have a very very small precise gap inbetween the two discs. Once the gap varies, even microscopically it effects the pressure in the pumps.

 

[jwpzx9r]

Then if that is the case Steptoe what is needed is a fix for the pressure sensor ? Some sort of relief valve... we need to get hold of Stewie from Family Guy he can sort this out

 

[wessexmike]

Well to be honest there is no way I would be giving up on the ABS/servo unit without getting the thing off and having a gander at it. I think half the problems with these bikes is the F'n electrics, the slightest thing F's up just about anything. I never use the rear brake lever to be honest I just use the front lever. I had a flashing ABS triangle about a month back I switch the bike off and then restarted it... no problem since but there must be something that can be done with these units it just has to be investigated

This started a few months back, and the Failure light would flash when I set off. If I stopped and restarted the bike it would be fine. This happened a few times until it just stayed on permanently. I wonder if it stays on once a fault code is lodged? The light did not come on during the short ride back after the diagnostics, but I have to believe it will come back soon.

I can't see that it is anything but the ABS pump, as the rear servo is not working. Codes that came up were:

Integral ABS - CAN

25159: CAN-bus timeout from ZFE
The fault is not present now

24957: Internal control module error - analog value of rear control pressure sensor
The fault is not present now

25140: Internal control module error - Comstart timeout
The fault is not present now

If anyone has any ideas on whether these codes mean anything but ABS servo pump failure, I'd love to know.

If the pump cannot be rebuilt, which seems likely according to the later posts, then I have little idea on what to do. If the pumps are all likely to go at some point, then nearly all older GS's will become economic write offs! And even if I could get hold of a secondhand one, the chances are it will fail, and waste the cost inc labour.

Is there somewhere I could take it and have the ABS and servo removed as suggested by a few? Any idea of costs to do so?

Anyone want to swap for a Speed Triple?!

 

[wessexmike]

This is the Servo/ABS modulator i'm referring to below, not the post 2007 ABS modulator..

A company in germany took a few of my old units away and were going to offer a refurb unit to the trade.
Being german they would have to put some units through the TUV test to be able to sell them in Germany. This was going to cost them a lot of money, plus they then had to offer a warranty and then offer them at a competitive price.

After doing tests and costings and being unable to improve on the the unreliability of the unit which meant they expected a lot of warranty exchanges, which would in turn effect their reputation and in the great scheme of things quite a small amount of business with very little profit but lots of headaches, they decided against offering reconditioned units.

From what they said to me, and this is a rough outline, seems the main problem are two discs inside the unit that spin at high speed and have a very very small precise gap inbetween the two discs. Once the gap varies, even microscopically it effects the pressure in the pumps.

Thanks for the info Steptoe. Is it easy to have the servo and ABS removed? Is it a viable alternative? All previous bikes bar an 1150GS have had no ABS or servo...