[s-cars] EDL fails (but my new 22's worked great!)

Toborg Michael (AC-SM/ESC5) Michael.Toborg at us.bosch.com
Wed Mar 2 15:54:12 EST 2005

The EDL should stay active at higher vehicle speeds than what the locker
opens up at. Can it build pressure at the front axle also? I don't know
what system is on there. 

-----Original Message-----
From: Keith Maddock [mailto:keith.maddock at gmail.com] 
Sent: Wednesday, March 02, 2005 3:48 PM
To: Theodore Chen
Cc: LL - NY; Toborg Michael (AC-SM/ESC5); s-car-list at audifans.com
Subject: Re: [s-cars] EDL fails (but my new 22's worked great!)

Theodore Chen <tedebearp at yahoo.com> wrote:
> --- LL - NY <larrycleung at gmail.com> wrote:
> > That said, I still agree with
> > Taka, I think comparatively, EDL was the cheap way out of providing
> > us with a switch and the corresponding wiring, for a locking rear
> > diff.
> EDL also removes the locker.  EDL is just ABS-based traction control,
> isn't it?


In short, it uses the ABS hydraulic unit (with two extra
valves/solenoids added) to generate pressure (using the ABS motor) to
brake the faster spinning rear wheel until that rear wheel matches (or
comes close to) the other rear wheel.

It's a relatively small cost compared to a locker rear and associated
actuation for said locker. (and normally less warranty risk too)


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