Does X5 has 'black box'???

[vinuneuro]

I agree with Jay..as long as the operator is using the BMW installed feature within the bounds of it's operation (there's only one way to use LC), there's no way for the company to qualify the it as abuse.

[JCL]

I don't think it is quite that simple. The accelerator pedal goes all the way to the floor. It is designed to. So, if I hold it there for an extended period of time I couldn't be abusing the powertrain?

So I guess we need to see the reference to the 25 time limit in the warranty statement from DinanM3.

[JCL]

Originally Posted by X5Jay

Both your comments sound a bit weird to me. If launch control is added to the car by the manufacturer as a feature, I can't imagine the manufacturer would consider it to be so destructive that it would warranty it for only a certain number of uses. Are they going to tell me I use manual mode on my steptronic too much if I have a problem with the tranny? What about if you rev your motor to within 100 rpm of redline often, is that abuse? I suppose they could put a warranty limit on the number of launch control uses given what it does, but if that's the case, I'd argue that the car isn't designed and built well enough to handle it yet and it shouldn't be there...

OK, fair comment.

I don't think launch control itself is destructive. I think doing enough repeated full-throttle standing starts would be destructive. I would have thought the launch control feature is there to save the vehicle, not kill it, since it is a more controlled start, or at least a more predictable start. I also remember something about US models not getting the same launch control as in Europe, perhaps the liability lawyers had an opinion.

So if you did a lot of standing start, full throttle, dump the clutch type starts, and you wore out the clutch, would that be warranty? Not in the manufacturer's opinion, since the part wasn't faulty. It simply wore out. Warranty doesn't cover wear and tear. Why would it be different with launch control and an SMG? Just because there is a feature there to make the clutch last a little longer, should it be assumed that you should be able to do that kind of start indefinitely?

Interesting theoretical debate. My first response was going to be to ask how many performances the collapsing steering column would be warranted for, but I figured that was taking the discussion too far off target, it was too easy.