dreaded brake warning lights

[Roadcaptain]

I was caught in some stationary and very slow moving traffic today, after about half an hour of filtering when possible and crawling when not my brake warning lights came on. I continued till the traffic cleared then pulled over and switch off. Switch back on and rode home with no further problems.

now, could this be caused by the heat today or do I need to do surgery over the weekend?

 

[Ian J Hartley]

If you do surgery, what do you expect to find? The fault, what ever it was has gone away. Transient.

I suppose you could do a visual to check the reservoirs have enough fluid. Check the sensors and ABS rings for any kind of damage or obstruction etc.

Anymore than that you are likely to induce a fault where there previously wasn't one.

If your looking for some kind of reassurance that every thing is OK, then as it's brakes, it's really down to you. Electro/mechanical devices occasionally throw up glitches, which are transient in nature, so if it were me, I would be wary, and be cautious in my riding style until I was happy it was only a transient fault.

 

[Roadcaptain]

going to ring a shop in the morning and see if any codes have come up.

by surgery I meant removal of servo

 

[Ian J Hartley]

I'm probably wrong on this, but I don't think the servo puts up fault codes that can be read, there is no connection to the diagnostic connector, like previous versions of the ABS.

Likewise there is no reset and clearing of codes, as the servo computer self checks, and clears it's self, assuming it sees all parameters within spec.

As for removing the Servo. A bit drastic for what seams a transient fault, but there again, if it restores your confidence in the brakes why not.

 

[flatdog]

try this perhaps -
Get her on her side....or get on your knees or back you lazy fucker.
On the foot brake pedal there is an adjustment screw which is used to ..hey ho adjust ...the brake light activation. this adjusing screw doesn't interface directly with the micro switch, as there is a thin stainless metal blade that protects the microswitch wiper contact area, for want of a better word.

The only times I have lost servo (85K miles) is when the stainless blade is bent over (due to rough brake pushing or not straight down = heavy traffic) and jams the microswitch, which stops the self check (similar to activating the brake before turning in the bike on and letting it start the brake check)
Pushing this blade back into place has remedied all my brake servo issues over the years.
Check the blade for ripples or deformation as it can also go back to 'normal' position during the next braking episode.

From, Die hard FLATDOG ''The not ready for a servo sectomy sect''.

 

[Roadcaptain]

thanks dog I will go have a look

 

[zeltus]

Mine did this a while back. Rear brake switch was fsck'd after a winter lay-off. Expensive item to replace, considering what it is.

Then, the soddin' light came back on again! I have an LED plate in the rear rather than the two-filament bulb and thought that might be playing up but it checked out OK (swapping the bulb back in, warning light still displays)

So, getting more technical then.

Starter motor really playing up and shorting/sucking all the juice on starting: so low volts causing the warning? Not really the expected low volts symptom but still - new starter motor (see relevant thread) fitted and light now comes on intermittently.

Sod it, I have got the tank off (GSA's do make it easy to remove the tank compared to some bikes I have owned) and heading into the ABS block with all the complicated looking plumbing... one of the reservoirs was a trifle low on fluid.. .not much, but a bit. So I topped it up and hey, all is well!

Of course, this might have nothing to do with what you bike is experiencing, but you still have to go thru' some sort of problem-solving procedure - this was mine and worked for me.

HTH

Bill

 

[Steptoe]

I'm probably wrong on this, but I don't think the servo puts up fault codes that can be read, there is no connection to the diagnostic connector, like previous versions of the ABS.

Likewise there is no reset and clearing of codes, as the servo computer self checks, and clears it's self, assuming it sees all parameters within spec.

.

Faults do register and are very detailed, and can be cleared.

 

[Roadcaptain]

I have done about 170 miles since this happened with no show of any lights, I will contact my nearest dealer tomorrow to get faults read

 

[Ian J Hartley]

Faults do register and are very detailed, and can be cleared.

Oops sorry!

Thanks for the correction.

Should have looked on the GS 911 website, still no harm done