I had problems with my transmission shifting/downshifting rough and returned to the dealer to ask about it. They scheduled me for a software update. It has been 2 weeks now, and it has shifted perfectly ever since. It is called Service Bulletin 15-021. Takes half a day to do. Nice!
TLX L4 Transmission Software Update Available
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Did you purchase TLX recently? Can you please share manufacturing date(you can find it on your driver side door).
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170 Posts
never mind I saw your other post.
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