[Sephanite]

I am not talking about traction off going into comfort mode, stiffening of suspension or stiffening of throttle and steering, i am asking about the eLSD.

eLSD is definitely on with Sports+ mode.

Is eLSD on with all aids off? does the shifter have to be in DS/MS mode to activate eLSD?

Is there any official posts from BMW about which settings puts eLSD on?

Is there a way to test eLSD?

[robbieracer]

To my knowledge the 3 series doesn't have a eLSD. The ///M cars (M5 & M6) do and the M3 has a regular LSD.
The way to test if you have a LSD is to burn rubber, if you have one tire mark it's a open diff. If you have two tire marks, then you have a LSD. The other way to tell is to lift the rear of the car and spin one wheel, if the other wheel goes in the same direction then you have a LSD, if it spins in the opposite direction it's a open diff.

An eLSD has an electronic module hanging off the side of the diff. case, it works like a open diff. when not activated.

[elistan]

Mechanically, it's an open diff. The only mode that engages the Automatic Differential Brake ADB system is DSC OFF. (That's the hold-button-down-for-several-seconds mode.)

Source:
http://prodcds.bmwuniversity.com/lib...20Dynamics.pdf

[drob23]

Cool document, should also serve as a good reference for people who ask about DHP and the electronic dampers. Lots of acronyms

Edit - also interesting to understand how VSS is implemented. For some reason I thought it involved motors (not sure how that makes sense) but in fact the gearing ratio on the rack just changes off center.

[dan8131]

Originally Posted by elistan

Mechanically, it's an open diff. The only mode that engages the Automatic Differential Brake ADB system is DSC OFF. (That's the hold-button-down-for-several-seconds mode.)

Source:
http://prodcds.bmwuniversity.com/lib...20Dynamics.pdf

Great info, never heard of BMW university. Do we have access to other documents on that site?

[Sephanite]

Thank you for the link. Some reading material over the weekend