458 - Ferrari 458 Trans gearbox DCT sensor issues fixed & info 11/2020 | Page 3 | FerrariChat

458 Ferrari 458 Trans gearbox DCT sensor issues fixed & info 11/2020

Discussion in '458 Italia/488/F8' started by Tarek307, Nov 25, 2020.

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  1. EZPerformance

    EZPerformance Rookie

    Sep 14, 2021
    6
    St. Louis, MO
    Full Name:
    Eric Reichert
    I normally charge 10 but I do both pressure sensors and the speed sensor and then redo all the zip ties. Unfortunately I wouldn’t be able to help you unless you want to drive to St. Louis
    View attachment 2537349 View attachment 2841721 View attachment 2955592 View attachment 2569637 View attachment 2957137 View attachment 2918069
     

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  2. FF40Man

    FF40Man Rookie

    Jun 5, 2021
    27
    Full Name:
    George Jackson


    HELP ME WITH THIS ONE MR. DCT man!
    We want answers, we want the truth!

    If I read this thread right.....only thing we need on this thread next are the pics of the before and after of the wiring/harness/clips, and how they are routed before and after.
    Can you provide this info sir?
     
  3. EZPerformance

    EZPerformance Rookie

    Sep 14, 2021
    6
    St. Louis, MO
    Full Name:
    Eric Reichert
    I can do my best, this seven speed Getrag has three common failure points, one of those being the zip tie locations on the harness. They were installed in a way that made the wires too tight and over time with all the drastic temp changes they endure, they will end up getting brittle and break or build up so much resistance that the part that they’re feeding ends up failing do to lack of voltage. The other failures common to this gearbox are the pressure sensors attached to the CCP’s electro hydraulic unit. There are two 40 bar sensors and one 60 bar sensor. The 60 bar has been the culprit in two of my rebuilds and I’ll leave it up to the customer whether or not to replace the others while we’re there which Ferrari owners will do but if it’s a car from a dealer or wholesaler, it’s difficult in persuading them to cut into what’s left of their profit margin when they just want the car done and sold. The last common failure is the most labor intensive and that is the speed sensor, you have to pull 90% of the gearbox apart to get to it which involves splitting open the other half of the gearbox. When I did my first one there wasn’t any info available on how to do it, no videos online either because nobody wanted to attempt it. You have to get a little violent to open it and you have bearings pressed into cases and pressed on shafts, you need to separate all of it without cracking the housing because you can’t buy just the housing to replace it, you’d have to buy the whole unit. There are also gears and synchronizers that are randomly pressed in or held in by hidden c clips that you need to remove to get the cases split. They have to be removed and installed in a specific order and have to be in a specific location or they will cause issues in performance. If you press one gear in too tight and another not pressed in far enough it may cause harsh shifts or worse no shifts. It’s a very difficult build if you had all the info but it wasn’t available so I did as much measuring and pre torquing that I could before pulling it apart. It’s a very tedious and difficult job not for the faint of heart because if you break anything you have to buy a whole transmission, and the parts you need come in full kits so you’ll have a lot of leftover parts and then you have to build your own tools to pull apart the gearbox. They didn’t have these tools when I first did it now I think you can buy them for $15,000. If you can complete all of that without any issues you’re doing great but now you have to teach the gearbox to work properly so you’ll need the right diag software and yet one last speed bump in this journey is the EPB relearn. It doesn’t matter if you have a 458 with 10,000 miles on it or a California with 150,000 miles on it the parking brake will either go through the learning process easily or it won’t and you have to replace that as well. I’m not at all trying to scare anyone or exaggerate if you’ve got the time, background in machining, engineering, mechanics and electronics and your OCD like I am, then you have an advantage, but if that sounds like something you don’t wanna deal with go ahead message me if you’re not in my area I’ll find somebody who is in yours. Good luck gentleman
    [email protected]
     
  4. sampelligrino

    sampelligrino Formula 3

    Apr 16, 2017
    1,245
    Thanks for your venture down the rabbit hole and glad more shops are investigating fixes

    Many of us are holding onto our pre-hybrid Ferraris that are getting older and older
     
  5. FF40Man

    FF40Man Rookie

    Jun 5, 2021
    27
    Full Name:
    George Jackson
    Thank you very much Eric!!!
     
  6. FF40Man

    FF40Man Rookie

    Jun 5, 2021
    27
    Full Name:
    George Jackson
    Thank you Eric.

    1. Are the pressure and speed sensors really failing or is it really all related to the wiring/harness/clips?

    2. Were the sensors updated with a perm fix? Sounds like the wiring/harness/clips have a perm fix in place now, and those that had multiple failures happened before this knowledge.
     
  7. FF40Man

    FF40Man Rookie

    Jun 5, 2021
    27
    Full Name:
    George Jackson
    Ferrari changed the specs of how the wiring harness is routed to eliminate the pressure points of the wiring that caused the sensors to fail. This appears to be the perm fix.
     
  8. oldman1982

    oldman1982 Rookie

    Jun 15, 2022
    31
    Full Name:
    Harris M
    i wannt to know this as well. somebody can answer ?


    Sent from my iPhone using FerrariChat.com mobile app
     
  9. wthensler

    wthensler F1 Rookie
    Silver Subscribed

    Apr 27, 2015
    3,473
    Gator Country, FL
    Full Name:
    William
    I don’t think there is nearly enough data out there. I replaced my 2013 458 Spider DCT and gear oil last month and published the results of the analysis by Blackstone here on Fchat.

    Essentially, after 35,000 miles and numerous track days, the fluid analysis came back pristine by every measurable parameter. And I’m the 3rd or 4th owner and have no idea how how the car was driven before I got it.

    Based solely on these results. I’d have to say there is no evidence a more frequent change schedule reduces failure potential.

    And being an outlier with regard to aggressive service (I’m at the high end), there does not appear to be any correlation to severity of use. In fact, you’re probably better off driving it hard.

    So………there you go, one person’s experience.
     
    Need4Spd, oldman1982 and Rexcat458 like this.
  10. oldman1982

    oldman1982 Rookie

    Jun 15, 2022
    31
    Full Name:
    Harris M
    thank you wthensler, i too in a verge of buying the power warranty for my 10 cali w 8k miles. or just self insured. the price of a year warranty is almost the same as replacing the speed sensor. power warranty only 5k-6k here in my country. the thing is i lost my original exhaust (previous owner replace it with fi exhaust setup). i need to buy the OEM exhaust if i want to go with the warranty. it's hard to find one here.
     
  11. D-Gunz

    D-Gunz Karting

    Apr 9, 2013
    149
    San Diego
    Full Name:
    David W.
    I got quoted $24k to rebuild the "entire" transmission (all sensors) + all seals. Hollywood mechanic told me every transmission will eventually fail due to TIME vs mileage; they said all the seals fail which affect the heat issue and sensors issue. He said even a "rebuild" would only be good for 10 years before it would have to be re-done again for all F-car with Getrag from 2009-2017. The 2018+ have a newer 8 speed transmission from what i read.
     
    Giallo27 and up4speed like this.
  12. D-Gunz

    D-Gunz Karting

    Apr 9, 2013
    149
    San Diego
    Full Name:
    David W.
    Hello! do you have an update for us? Did the problem never come back? How many miles have you driven since all 3 sensors were replaced? I just got the RED BOX today light up so i'm seeing Dale next week. Ive had my 2011 Cali for 3yr and did 29,000 miles prior to failure (car now has 49k miles). thx!
     
  13. Tarek307

    Tarek307 Formula 3
    Silver Subscribed

    Sep 26, 2018
    1,346
    Long Beach, CA & Alexandria,Egypt.
    Full Name:
    Tarek Salah
    Problem never came back, i sold that car in 2021 and put around 4K more miles on it since the Trans issue (and now have another 458) i'm in touch with the owner of the car in the thread, and he's put close to another 10K miles on it and no issues.
     
    rob5819 and D-Gunz like this.
  14. D-Gunz

    D-Gunz Karting

    Apr 9, 2013
    149
    San Diego
    Full Name:
    David W.
    awesome! that's the kind of news I need to hear before I dump at another $10k+ to fix the tranny....
     
    rob5819 likes this.
  15. D-Gunz

    D-Gunz Karting

    Apr 9, 2013
    149
    San Diego
    Full Name:
    David W.
    when you loose all "even" gears - what is the root cause? That just happened to met yesterday! I have 6 error codes; doing live diagnostics tomorrow for parameters reading
     
  16. mikey64

    mikey64 Formula Junior
    Rossa Subscribed

    Jun 26, 2013
    527
    TN
    Full Name:
    mikey
    D-Gunz and sampelligrino like this.

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