458/488 Brake Recall

Good point. Along these lines, I’m very curious to know what other vehicles use the same Bosch parts…

 

IMO, our cars are too "young" especially the 488s, to have seal issues. Hence you point of asking a 328 guy, that's easily of age for seal issues....

 

Let's not forget our deal old friend "COVID", throwing the wrench in timing....

 

FWIW, and the official notification will go out next week:

" The repair consists of replacing the brake fluid reservoir cap and updating the software in your vehicle to provide for a different warning message if your vehicle should lose sufficient brake fluid. The replacement part is not yet available; we will contact you again when the replacement part is in dealer stock. The time needed for the repair and software update is estimated to be approximately 2 hours. "

S

 

how anti-climatic
this recall is a total dud

 

Sounds like the analysis is, a tighter cap to prevent loss of fluid and a more informative error message to warn you if we happen to see an issue…. Nothing really wrong here!

Think that’s gonna fly??

SV

 

And 2 hours to do that?

 

Sounds like they are fixing the canary, not the coal mine

 

Interesting... If the above is true then Ferrari is claiming brake fluid leaks through the cap. Which certainly hasn't been the case for those of us who have been affected by this failure. The whole problem for us has been that we experienced an internal leak. You can quite easily confirm whether the cap leaks or not.

The other issue is whether the software update only involves the brake system warning or whether it's a more comprehensive update. As a MY2010 owner I wouldn't want to lose the awesome exhaust sound, pops, and burbles that other MY2010-11 owners have experienced with a factory ECU update...

 

right now the software lights up the dash with a low brake fluid warning when 52% of the fluid is gone

presumably, with the software update the dash light will come on much, much sooner?

an improved canary, no doubt, but the internal leak (the coal mine) has not been solved?

the cap thing is silly

 

I also have the same concern with my 2010 458. If all the upgrade does is change a warning light, then I will forgo doing the recall until I sell my car many years in the future as the risk of an ECU upgrade and losing my exhaust sound is too much, but I’ll get the upgraded cap.


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I thought the complaint was that the brake pedal went hard as a rock and couldn’t be depressed? Wouldn’t a lack of fluid cause a soft pedal going to the floor?

 

Unless the booster failed, then you have no ability to push and have an impact(or a very slight one). If the pedal is soft, the booster is working and your brake fluid is boiled or low...

 

That’s what I thought the complaint was...hard pedal, failed booster. Low fluid doesn’t sound like the culprit.

 

But, why did the booster fail? I think the issue is brake fluid leaks through the master cylinder and erodes the seal at the booster and renders it flaccid and unable to provide boost. Or maybe it leaks through the lid (via cracks/poor seal?) on the brake fluid reservoir, down the sides and leading into the booster...just speculation, but a new lid is apparently being recommended...

 

Exactly, so how would a filler cap remotely address the issue?

 

Maybe I missed it, but where did anyone officially investigating this recall state that it was an internal failure?

Steve

 

Nobody official that I am aware of. I just thought the complaint was a brick hard pedal and thus no braking.

 

Go do some searching on rennlist the Porsche forum in the 997 and 991 GT3 forums search Ice Mode. Porsche brakes had an issue mostly at the track that we called Ice Mode under hard braking. I haven’t been on Rennlist much in a couple years and I never experienced Ice Mode but I have friends at the track that did but it was a very rare occurrence. I do not remember the fix but the later 991 GT3’s never complained about this issue.

 

speculation:

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I thought ice mode was more related to lack of engine provided vacuum under high throttle applications (engine creates the vacuum used by the brake booster in nearly all cars with some other cars having a separately powered booster like the Buick Grand National), the 458 brake failures are not on track during WOT or close to it...anyway, some speculations here (not just a Porsche thing)
http://www.the370z.com/brakes-suspension/136512-new-thoughts-ice-mode-possible-solution.html

 

Maybe the new cap states "Fluid MUST be checked before each operation" thus alleviating them of liability?

 

Unless I missed something, it seems the F8 is not involved in this issue. Is that correct?

 

LOL

 

That's not how it works. Fluid doesn't just find its way in the booster.