[denverpete]

Originally Posted by MNBoxster

Hi,

That light simply indicates a malfunction, two of which are the ones you mention. A third possibility is speed calibration.

The DME needs to know when to raise and lower the spoiler. This means that it needs to know how fast the car is going. To insure that the spoiler doesn't fail to rise at 75MPH (creating an unsafe condition which the Driver is unaware of), the DME re-calibrates itself on each startup. This why the dash light comes on to indicate a speed fault. Only once the car has attained 3MPH is the DME capable of doing the calibration. Once it's satisfied that it is properly calibrated, the light goes out.

But, if say you were to lose a Speed Sensor, or some debris clipped the wire, or such that the DME was no longer receiving a signal from the Speed Sensors, the dash light would come on to alert the driver of the system fault so as not to exceed 75MPH until the fault is isolated and corrected...

Happy Motoring!... Jim'99

Point taken. But, at least in my case, the spoiler light turns off after beginning to move. Then, the spoiler raises at 75 MPH and the light comes on. The spoiler also lowers at 45 (or whatever) but the light does not turn off until the vehicle is turned off.