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    Anyone know why BMW don't rebuild auto transmissions and only put new ones in?

    Everyone else seems to do a rebuild rather than putting a brand new one in.
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    (Original post by Bavarian Motor Works)
    Anyone know why BMW don't rebuild auto transmissions and only put new ones in?

    Everyone else seems to do a rebuild rather than putting a brand new one in.
    You can rebuild BMW auto boxes... It would cost less (labour time is the killer) to simply stick a new one in rather than to rebuild a 'box and possibly miss some damaged components. Its a lot of work to get the gearbox out of most BMWs and so when its all apart your probably better off paying £5k (say) for a new box rather than £4k for a fully reconditioned one. Plus the dealer will make more money on supplying a totally new box rather than rebuilding the old one.

    With most auto boxes they are also sold as 'sealed for life' units i.e. the gearbox should last the life of the car without the need for servicing. This usually means that the manufacturer will not bother releasing workshop manuals on how to rebuild the gearboxes and so main dealers would never attempt it. Plenty of auto specialists who will do rebuilds for you (depending what is actually broken!)
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    (Original post by Bavarian Motor Works)
    Anyone know why BMW don't rebuild auto transmissions and only put new ones in?

    Everyone else seems to do a rebuild rather than putting a brand new one in.
    Mainly because to replace it costs the customer more and takes less time than to rebuild it - hence BMW wins.

    Sealed for life units are a terrible idea - they say they last the lifetime of the car, but that assume the lifetime is considerably less than 10 years! Get it serviced at an independent specialist before it goes bang and it saves a lot of money long term...
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    I have been quoted £1350 for a rebuild.
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    (Original post by Bavarian Motor Works)
    I have been quoted £1350 for a rebuild.
    Whats the reason for needing a rebuild? Has the problem been diagnosed for certain?
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    (Original post by prodriven)
    Whats the reason for needing a rebuild? Has the problem been diagnosed for certain?
    well the gears started slipping and the revs started jumping between 80 - 100, now there isn't any drive!

    The guy said it's going to certainly need a rebuild as it sounds like the torque converter has screwed up and fluid is blocking something.

    Something along those lines.

    *sigh*
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    (Original post by Bavarian Motor Works)
    well the gears started slipping and the revs started jumping between 80 - 100, now there isn't any drive!

    The guy said it's going to certainly need a rebuild as it sounds like the torque converter has screwed up and fluid is blocking something.

    Something along those lines.

    *sigh*
    For the torque converter to stop working it usually suggests a loss of oil pressure or oil supply. If you imagine what damage would be done to an engine if ran with no oil, then the similar is true for a gearbox - thats probably why BMW wont bother attempting a repair as theres a high possibility much of the internals have had it.....

    Whats cars it on? 6 or 5 series?
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    (Original post by prodriven)
    For the torque converter to stop working it usually suggests a loss of oil pressure or oil supply. If you imagine what damage would be done to an engine if ran with no oil, then the similar is true for a gearbox - thats probably why BMW wont bother attempting a repair as theres a high possibility much of the internals have had it.....

    Whats cars it on? 6 or 5 series?
    535d
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    (Original post by Bavarian Motor Works)
    535d
    that wouldnt be a 535d with M-tech kit on would it? my mums bf used to have one of those. it was practically indistinguishable from a normal M5 except it had a diesel engine.
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    They actually do both.

    They take your old core and rebuild that and supply you with a new box. The core would have come from another car although, there's enough components in there to be called "new".
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    (Original post by Lara C.)
    that wouldnt be a 535d with M-tech kit on would it? my mums bf used to have one of those. it was practically indistinguishable from a normal M5 except it had a diesel engine.
    Yeah nice cars
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    (Original post by Bavarian Motor Works)
    535d
    That'll be a ZF box then. If the guy is happy a rebuild will sort it then I'd give it a go, but make sure you get a decent (2yr+) warranty on the rebuild. I'd personally be concerned that the hydraulic valve block (the main controller) of the gearbox will have become contaminated. If thats the case then I would expect repair bills over the £1350...

    How far out of warranty is the car? If it still less than 4/5 years old I'd be tempted to go back to BMW and try and get them to part fund the repair, you'd be suprised how accomodating they can be - espeicially if you always get your car serviced at the same dealer.
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    (Original post by Bavarian Motor Works)
    Anyone know why BMW don't rebuild auto transmissions and only put new ones in?

    Everyone else seems to do a rebuild rather than putting a brand new one in.

    because it is probs cheaper to put a new one in
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    (Original post by ryan08)
    because it is probs cheaper to put a new one in
    Not by the looks of it.

    4 grand for a new one
    1 1/2 for re build
 
 
 
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