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      07-16-2017, 10:29 PM   #1
cmacclel
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Launch Control not working (Broken?)

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I picked up a 2011 135i 2 weeks ago with 40k miles. Drove in home Thursday and Friday afternoon installed the MHD Stage 1 tune never trying launch control before the tune. Just a few minutes ago I was out taking a ride with my son and decided to try it. Motor revved up around 3k I let my foot of the brake and the car lurched forward then immediately cut the power ( I didn't let off) making a nice thud. 5 minutes later tried again thinking I possibly did something but ended up with the same results. Never has an issue doing it once or twice with my C63. I have a 90 day 3750 miles warranty with the car so that's not a large window to get something fixed....LOL. Any ideas?
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      07-16-2017, 10:32 PM   #2
MGM135is
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Did you see the checkered flag before you launched? You may have missed a step like turning off traction control or something.
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      07-16-2017, 10:38 PM   #3
cmacclel
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Quote:
Originally Posted by MGM135is View Post
Did you see the checkered flag before you launched? You may have missed a step like turning off traction control or something.
Yes checkered flag on cluster and motor was revving around 3k before letting go of the brake. I don't know if the tires start to spin and the car chops the power or whats going on. When it cuts the power I actually am just rolling forward under ZERO power with my foot still to the floor on the accelerator. If traction control was not off the car won't even initiate launch control right? Im 99.999% sure DCT was illuminated on the cluster.
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      07-31-2017, 09:24 PM   #4
cmacclel
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I wiped off the rear ABS sensors everything now WORKS!
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