DTC help. Traction control...not "DCT"

[Spitfire007]

Can anyone help me figure out the different modes there are? Can someone help explain the E-Diff?

1. When I drive around normally, I see nothing light up in the instrument cluster unless the back wheels get a little excited and spin up.

2. If I push it once, I just see the light DTC on in the instrument panel. What mode is this? Half-off? or Half on?

3. If I hold the button down, I think it turns EVERYTHING off, and I can wheel-spin or drift to my heart's content. Is that correct?

I have a 2010 M-sport car, no DSC.

The manual says that if I push the DTC button, it turns DTC "ON"...but that doesn't make any sense to me.

Could someone please clarify? Thanks! Liking this forum already very much.

[TX78666]

Half off = half on.

Hold the button down = ediff, AFAIK. You can spin to your heart's content, but the system will apply some brake to the spinning wheel, to try to ge the other to hook up.

[singular]

There are a number of good threads on this topic. Search for "TIM YOYO".

Here's one of them: http://www.1addicts.com/forums/showthread.php?t=250656

[Spitfire007]

Originally Posted by singular

There are a number of good threads on this topic. Search for "TIM YOYO".

Here's one of them: http://www.1addicts.com/forums/showthread.php?t=250656

thanks just saw that. I want the T-shirt!

So, does every 135i have DSC? I only have a DTC button.

I now understand the E-diff thing....makes sense.

[Tom K.]

Yes, you have DSC (Dynamic Stability Control) which is automatically activated when you start the car. To turn it off, press and hold the DTC button for 3 seconds.

See your manual for more info.

Tom

[Spitfire007]

Gotcha. I just saw a DTC button, and didn't realize the tricky BMW way of presenting us with DSC/DTC.
I get it now.
I need to go find an empty parking lot to do donuts in.