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Old 06-16-2011, 10:22 AM   #6
Lil bastard
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Join Date: Feb 2008
Location: Du Monde
Posts: 2,199
Using the button doesn't solve the problem, it's just a workaround.

You need to get this working automatically because the rear end will get squirrelly at speed w/o the spoiler.

It may be a wheel speed sensor, a wiring issue, a motor issue or retractor microswitch, or even the DME.

If the calibration light (spoiler light on dash) comes on at startup, but goes out once you hit 4MPH, you can pretty much rule out the speed sensor and DME, indicating a wiring or microswitch issue.

But don't rely on manual operation, it's inherently unsafe. Don't find this out the hard way.

1990 Porsche 964 Carrera 4 Cabriolet
1976 BMW 2002
1990 BMW 325is
1999 Porsche Boxster
(gone, but not forgotten)

Never drive faster than your Guardian Angel can fly!
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