Re: One for the Brains Trust

[ti@bazooka.amb.org (Ti Kan)]

Phil Payne writes:
> Here's a good one.  Why does engaging the differential lock on my car 
> automatically disable ABS?
>  
> On the TORSENs, the only lockable differential is the rear one.  This 
> effectively turns the rear into a solid axle - leaving the centre TORSEN and 
> the front unlocked.
>  
> I could understand ABS being disabled if it worked on a wheel-by-wheel basis.  
> But on the 1988 MB there is only one channel for the back axle.

Even though you have only one hydraulic modulator channel for both rear
wheels, there are still individual ABS speed sensors in each wheel that
still contribute to the control unit's inputs.  Locking the rear diff
effectively renders the rear sensors (relatively to each other) useless.

-Ti
96 A4 2.8 quattro
84 5000S 2.1 Turbo
80 4000 2.0
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