Clutch / brake issues - Ducati Panigale V4 Forum
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post #1 of 7 (permalink) Old 06-28-2018, 06:32 AM Thread Starter
tyr
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Clutch / brake issues

So I went to get my bike inspected and the brake light no longer worked, it seemed to be stuck on. I troubleshooted taking off the rear/front switch and it was still stuck on, so it wasn't mechanical. Dealer hooked it up to the computer and the ECU was registering the switches but the light seemed to have gone bad and was stuck in the "on" position.

I did also mention to them the clutch lever seemed to have to be all the way back now and half the time you couldn't shift manually, but the QS would work fine. Ducati said my slave cylinder didn't meet the recall, but when the tech pulled it was indeed the old part -- so hopefully they will replace this. They had bled it at my first service as well, and I was back there about 1200 miles later and they had to bleed it again (air was already in the clutch again, LOTs of air).

Rear brake fluid is already cooked (black) as well, need to replace that. I'm @ 2100 miles currently (have had it for almost 4 weeks).

Just figured I'd let other people know about the little stuff as the brake light was driving me nuts and it is not a common failure (the tech said he only had seen one other failure like this and it was on a Multistrada when they used PWM for the tail light).
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post #2 of 7 (permalink) Old 07-01-2018, 04:54 PM
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My fluid is black too.......is it fried now? Do I need to renew the fluid?
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post #3 of 7 (permalink) Old 07-02-2018, 03:22 PM
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I've had my front brake assembly replaced, for a very similar problem to you @tyr . My brake light was flickering on and off on bumpy roads, half my mates thought I was braking mid corner!
Also had the slave cylinder replaced, find that one day releasing the clutch all the way out, didn't engage at all and I went nowhere - wasn't a good day!! (this was after the recall regarding the clutch!)
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post #4 of 7 (permalink) Old 07-03-2018, 09:59 AM Thread Starter
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Quote:
Originally Posted by Stevedv4 View Post
My fluid is black too.......is it fried now? Do I need to renew the fluid?
You can just suck/vacuum some out of the reservoir (do not drop it below min or all out as you'll get air in it). Put new brake fluid in and you'll be okay for a bit longer. Seems like this bike cooks the fluid real quick, though the brake still works.
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post #5 of 7 (permalink) Old 07-03-2018, 10:00 AM Thread Starter
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Originally Posted by BeneWright View Post
I've had my front brake assembly replaced, for a very similar problem to you @tyr . My brake light was flickering on and off on bumpy roads, half my mates thought I was braking mid corner!
Also had the slave cylinder replaced, find that one day releasing the clutch all the way out, didn't engage at all and I went nowhere - wasn't a good day!! (this was after the recall regarding the clutch!)
Hopefully they replace the slave cylinder on mine, after 200 miles from when the dealer bled it last and it's already got air back in it.
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post #6 of 7 (permalink) Old 07-03-2018, 10:30 AM
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Mine rear brake fluid cooked in 1st 300 miles. I bled all of my fluids (front,rare,clutch) with Castro STR. I rode for another 500 miles before my bike went to shop for quickshifter issues. Fluid stayed clean and cool:

https://www.amazon.com/Castrol-SRF-R.../dp/B000JL760C
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post #7 of 7 (permalink) Old 07-05-2018, 10:19 PM
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I would just flush the brakes . Itís quick and easy to do . If the fluid is black itís cooked and if it black in the Res itís cooked in the lines as well I would most likely guess . It shouldnít take more then 20 min and a friend with an extra set of hands is usually a big help ! Sucking it out from the top and adding new fluid I wouldnít recommend personally .

grip bars , grab throttle and twist !
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