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DIY mechatronic replacement, hard?

JimboTD5 Aug 20, 2018

  1. JimboTD5

    JimboTD5 Registered User

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    Hi guys new on here,
    Just bought my 2010 S4 and surprise surprise the mechatronic unit has started to play up. It’s under warranty but reading between the lines I don’t think they’ll cover this so I’m thinking of attacking it myself, at least I know it’s done right then too. I’ve found a guy fairly local that overhauls the unit for around £350, so it’s just a case of getting it on and off, is it difficult? Any tips?
    Looks fairly straight forward on a guide I found?
     
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  3. Dippy

    Dippy Registered User

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    I can't remember for sure but I think someone posted a DIY on this over on Audizine.
     
  4. MarkWizard

    MarkWizard Active Member VCDS Map User

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    Playing up in what way?
     
  5. JimboTD5

    JimboTD5 Registered User

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    Hesitant in first and second when not coming to a complete stop or in slow moving traffic as if it doesn’t know what gear it’s in, hard downshift from 2-1 sometimes, reversing uphill is practically impossible it jumps out and starts rolling forward or just sits there revving, sometimes get an odd clunk between gears.
     
  6. MarkWizard

    MarkWizard Active Member VCDS Map User

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    That's similar to what my A5 3.0 TDI Cab was doing, eventually got the garage to buy it back from me. Mine would lurch forward as it changed down from 2nd to 1st and would either stall, leave you sticking out of a junction or worse and do both!
     
  7. youngy93

    youngy93 Registered User

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  8. JimboTD5

    JimboTD5 Registered User

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    I did see that but doesn’t really answer my question I want to do the work myself and change the control unit as I’ve been told that’s 98% the fault I have, I just need to find someone to take it out and put it back in for me but can’t find anyone local so thinking of having a go myself
     
  9. razza1

    razza1 Registered User

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    Who’s the warranty with, as most cover the mech unit?
    Hopefully that is the case as otherwise it could be the clutches, gearbox specialists can replace.
    Haven’t seen a manual but don’t think it’s too hard a job from what I hear...


    Sent from my iPhone using Tapatalk
     
  10. The Jargen

    The Jargen Registered User

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    Haven't done this on longitudinal layout before, but its a pretty straight forward job in fact it's easier on your car because you have more access.
     
  11. JimboTD5

    JimboTD5 Registered User

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    A1 approved I believe it’s called? Been reading the paperwork and it seems I have to pay for all diagnostics etc first at Audi rates as I can’t find anyone else that’ll touch it, and in my eyes I’d rather put the 100 odd quid (maybe more?) towards just changing the damn thing myself and less hassle, I’m going to price up a new pcb from Audi and oil etc and weigh up my options I think as at a rough guess it’s only gonna cost me about 4-500 quid including the fresh oil/filter.
     
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  13. Black Pearl

    Black Pearl Registered User

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    I did this job in my garage on a set of car ramps. The unit is heavy inside and its messy. The hardest part was fitting it back in as you have to line everything up, also hold the unit with one hand whilst bolting it in. Try and find a heat resistant tube aswel as I melted a few on the cat filling up the fluid.
    Try this thread it has some useful info.

    http://www.audizine.com/forum/showt...-Service-DIY?p=12115786&posted=1#post12115786
     
  14. skiptowncat

    skiptowncat Registered User

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