[s-cars] One touch window lifts

[Franco Barber]

On Wed, Jul 24, 2002 at 11:17:36PM -0400, TM wrote:
> It sounds like you need to rewire the entire power window system in
> order
> to get one touch up/down and pinch protection, correct? Darn, if only
> Igor had a '94 S4 or something, then it would have been done already.
> :-)

To get pinch protection in the way the factory implemented it, you
have to rewire AND replace the window regulators.
The window regulators in the later cars have a couple of output signals
that provide to the window controller information about the movement of
the window.
Essentially, these signals are pulses that count how far the window
is moving and in what direction.  The controller "counts" how many
pulses, and is trained to remember the pulse count when the window
has reached the top of the travel.  If the window stops moving before
it reaches the correct count, the controller stops the window and backs
it up a certain number of pulses.


>
> The rolling up the windows thing can be done through a 1552 or a
> VAG-COM,
> for the cars that have that ability- all of the "switchblade" key
> equipped
> cars have this feature- B5/B6 A4, late C4/C5 A6, A8, various VWs.
>
> Taka
>
>

Franco

--
Franco Barber                        feb at febsun.cmhnet.org
95 A6Q auto w/Gamma CD mit RDS!      Columbus, Ohio  USA
95 A6Q 5spd