[s-cars] How does EDL work?

[Mark Strangways]

EDL, electronic differential locking, works thru the ABS unit.

Much like anti lock brakes but in reverse.
If it sees one wheel going faster than the other (on the same axel) it will 
apply braking pressure to that wheel.
More torque will then go to the other wheel, it has it's limitations but 
that is about it in a nutshell.

I do not know if it has the same affect on the front axel or not.

HTH's

Mark
----- Original Message ----- 
From: <henryb at aciworldwide.com>
To: <s-car-list at audifans.com>
Sent: Wednesday, March 01, 2006 8:38 AM
Subject: [s-cars] How does EDL work?


>I just purchased a 1997 S6 and I understand that it uses an Electronic
> Locking mechanism for the Rear Differential Lock.  On many of my previous
> quattro's: '92 S4, '95 A6, '90 CQ, '88 5K TQW, they all had some manual
> mechanism to lock the differential.  I have not seen any good technical
> write-up on exactly how does the EDL work.  Does anyone know of a good
> tech white paper on the web that describes this system well?  I have also
> heard that later EDL systems work on both Front and Rear Diff's???  Is
> that different then the system that I have on my S6?  Any feedback would
> be appreciated.
>
> Thanks,
> Brent.
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