07-29-2014, 04:31 PM | #1 |
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Launch control...
Anyone try this out yet? I did the other day, but got a lot of tire spin. Pretty sure I messed it up. Where did I go wrong?
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07-29-2014, 05:20 PM | #2 | |
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If done right, you will know it's in launch control mode when the checkered flag icon shows up at the cluster . |
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07-30-2014, 01:09 AM | #3 |
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Yeah I think it's six miles at first. Didn't get the flag though. I think I know where I went wrong. I'll give another shot today.
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07-30-2014, 07:18 AM | #4 |
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I tried it yesterday as well I don't think I had the brake in all the way. When I tried it got a lot of wheel spin and the back end started pulling to the right. Given there was a guard rail ahead and we were at a red light I listened when my passenger started yelling "abort abort abort!!!" At least we got a good laugh out of it.
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07-30-2014, 11:22 AM | #5 | |
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07-30-2014, 11:40 AM | #6 | ||
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07-31-2014, 01:28 AM | #7 |
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Here is how you do it. It takes some practice.
1-- you must have drivin 12 miles. 2- Press Trac control button once to enable dynamic traction. 3- Slide shifter to the left into sport mode. 4- Left foot on the brake... 5- Gas pedal ALL the way to the floor beyond the normal..stop when you feel a button press at the end..... Then you will see it activate on the dash ......>>>>>3k or so then HOLD ON!!!!!! |
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07-31-2014, 07:19 AM | #8 | |
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07-31-2014, 08:16 AM | #9 |
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I tried all the steps in the owner manual and it didn't work. Just spun up the rears. Went to the dealership to find out why it wasn't working. They called BMW South Africa and apparently launch control is locked until you reach 5000km's.
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08-04-2014, 10:39 AM | #10 |
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I think there's a lot of over-thinking in terms of activating Launch Control. I think there are 4 things that need to be in place for Launch Control to work:
1. Engine is warmed up. I think it's based on temp, not miles driven. I've driven less than 6 miles, but with a warmed up engine, I've still been able to use LC. 2. Sport+ mode active (more importantly, DTC active) 3. For autos, shifter moved left (so it's in sportier, yet still Auto shift, mode) 4. Accelerator pedal kick down depressed. I don't think you see the LC flag until this happens. So if you ease into the throttle thinking you'll activate LC, you won't see the flag and become confused. This is what happened to me the first few times. Keep in mind, with the Auto, there's nothing magical happening with the transmission when you activate LC. You are just brake torquing with RPMs held at 3k (or whatever it is). So, if you don't have the brake pedal mashed HARD, you'll overwhelm the brakes and get rear wheel spin. To keep the rear wheels from spinning, press the brake pedal HARD, I mean really hard! You're trying to keep 332 lbs/ft in check. |
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08-04-2014, 10:43 AM | #11 | |
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08-04-2014, 01:45 PM | #12 | |
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08-07-2014, 02:12 PM | #13 |
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08-07-2014, 04:09 PM | #14 | |
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The shifter has been moved left into Sport shift mode, so you'll have the same, more aggressive shift points as Sport+. You'll have the throttle mashed, so the different throttle mappings don't come into play; you're at 100% either way. The only remaining difference would be the shock damping. You could make the argument that with the less aggressive shock damping, there would be more rearward weight shift under hard acceleration, giving better traction at the rear wheels and thus better launch performance. I don't know if that's true or not, but you could make the argument. |
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08-07-2014, 05:09 PM | #15 |
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08-07-2014, 05:13 PM | #16 |
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I seem to recall a major car magazine stating that they observed their best 0 to 60 times without using Launch Control.
Or perhaps it was Lunch Control.
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08-07-2014, 05:28 PM | #17 | |
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(Disclaimer: this is how it works on my 335is... may be different on the M235i) |
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08-08-2014, 08:39 PM | #18 |
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It would be great if someone could make a video doing it, that would help a lot...
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08-08-2014, 09:01 PM | #20 | |
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08-08-2014, 09:06 PM | #21 |
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looks like you need at least 5000km on your car also
http://www.2addicts.com/forums/showp...95&postcount=9 |
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08-09-2014, 12:27 AM | #22 | |
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This can only happen when the computer is set to "DTC" - dynamic traction control. Dymanic mode allows for some wheel spin but will still intervene if the wheel spin gets beyond a certain threshold. I can see why LC requires the system be set to DTC, for the reasons above. I think what he was saying is that you don't have to use sport+ mode to do a launch. You can be in comfort or sport mode and then activate DTC by pushing once on the DSC button, which activates DTC. Sport+ automatically turns on DTC, and sets the AT to sport mode. I don't have launch control on my 335i Msport, but I can easily do a launch, and I mostly use Sport+ when I do as it sets everything for best performance with one button push. Last edited by RPM90; 08-09-2014 at 01:07 AM.. |
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