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The BMW Range
5 Series
E39
Reprogramming Transmission Control Unit (TCU)
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<blockquote data-quote="tee" data-source="post: 716431" data-attributes="member: 28185"><p>Hi, anyone has experience or knowledge to reprogram TCU. Recently, I have got it changed, but the gear ratios and changes is quite dissatisfying. Wonder if there is a way to calibrate it to the way it's supposed to be. In steptronic mode, gear doesn't change to 5th on its own. But, in other modes, everything is OK, except the ratio. Mechanic tried changing to a new one, and it's the same result. Any ideas? </p><p></p><p>Sent from my Lenovo K910 using Tapatalk</p></blockquote><p></p>
[QUOTE="tee, post: 716431, member: 28185"] Hi, anyone has experience or knowledge to reprogram TCU. Recently, I have got it changed, but the gear ratios and changes is quite dissatisfying. Wonder if there is a way to calibrate it to the way it's supposed to be. In steptronic mode, gear doesn't change to 5th on its own. But, in other modes, everything is OK, except the ratio. Mechanic tried changing to a new one, and it's the same result. Any ideas? Sent from my Lenovo K910 using Tapatalk [/QUOTE]
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The BMW Range
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E39
Reprogramming Transmission Control Unit (TCU)
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