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Discussion Starter #1
Hi,

I just recently acquired a BMW x3, that has the 6HP21X Automatic Gearbox, when i bought it I new it had an issue with the gearbox, but thought it was still a good deal even if I pay for a having the gearbox overhauled.

So after shopping around for a decent garage, I finally bit the bullet and had them rebuild the gearbox, but whilst driving home after collecting my car with the newly rebuilt gearbox, I noticed a large thump when coming to a complete stop, so I called the garage and they told me its almost likely that the Mechatronics unit thats at fault and they informed me that as part of the reconditioning of the gearbox they didn't touch the Mechatronic Unit and if they did it would be an extra 1500 pounds to send it out for a rebuild as they don't do this type of repair .

I was very disappointment that the garage didn't do this as part of the rebuild, as after watching a few YouTube videos on this topic I was almost going to have a go myself at rebuilding it to save some money and to be honest the only thing that stopped me was time it would have taken me to build over the time they took build.

Anyhow, now I in a dilemma as i still have the thump issue and not sure what or where to turn, can anyone advise as to what might be the issue or is the garage correct in what they are saying.

Thanks for reading:jaw-dropping
 

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Registered
Joined
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4 Posts
Discussion Starter #2
Hi,

I just recently acquired a BMW x3, that has the 6HP21X Automatic Gearbox, when i bought it I new it had an issue with the gearbox, but thought it was still a good deal even if I pay for a having the gearbox overhauled.

So after shopping around for a decent garage, I finally bit the bullet and had them rebuild the gearbox, but whilst driving home after collecting my car with the newly rebuilt gearbox, I noticed a large thump when coming to a complete stop, so I called the garage and they told me its almost likely that the Mechatronics unit thats at fault and they informed me that as part of the reconditioning of the gearbox they didn't touch the Mechatronic Unit and if they did it would be an extra 1500 pounds to send it out for a rebuild as they don't do this type of repair .

I was very disappointment that the garage didn't do this as part of the rebuild, as after watching a few YouTube videos on this topic I was almost going to have a go myself at rebuilding it to save some money and to be honest the only thing that stopped me was time it would have taken me to build over the time they took build.

Anyhow, now I in a dilemma as i still have the thump issue and not sure what or where to turn, can anyone advise as to what might be the issue or is the garage correct in what they are saying.

Thanks for reading:jaw-dropping
Thanks to everyone who read, I guess I joined the wrong forum, I am thinking since i havent had an answer or suggestion and its been a while that this must be way to technical a question or who knows, So I'll try and find a forum where there are BMW enthusiasts that are more experienced in this area.
 
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