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Enthusiast / Moderator
dave284 profile image

Feb 9, 2008, 6:56 PM

Post #1 of 1 (1891 views)

On the older lincoln system, the control module monitors ride height for up to an hour after the ignition is turned off, venting pressure as needed to maintain correct ride height. During this time it will lower,but not raise the vehicle. At the end of the hour, the compressor will kick in for up to 30 seconds to add air if ride height is low.After that , it shuts down and makes no further corrections until the ignition is turned back on.

When the ignition is turned on, the system will raise ride height if necessary,but not lower it. After 45 seconds, it will then make lowering corrections as needed, but only if all the doors are closed. It will not make any corrections if the brake pedal is depressed. Once the system is in its "driving" mode, it averages input from the height sensors before making any adjustments in attitude. This prevents the suspention from trying to compensate for every bump in the road .Only when a continuous high or low indication is present for more than 45 seconds will it react and make a change.

If a change in ride height isn't accomplished within 3 minutes after the needis indicated, the system warning lamp comes on and stays on as long as the ignition remains on. When the key is turned off, the warning lamp will go out and remain out unless the same problemis indicated the next time the key is on.

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