1995 Cadillac DeVille Owner's Manual - Page 168

There are two things the system docsrl'r do: It can't sense heavy dust in the places where you drive. If you drive in a dusty area, you should change your oil every 3,000 miles ( 5 000 km) or three months (whichever comesfirst) unlesi thedisplay says to change it eve11 somer than that. I t doesn't check IIOCV much oil you have, so you'll still have to check for that. To see how, see "Engine Oil" i n the Index. 0 Electronic Level Control The Electronic Level Control (ELC) system autonmtically adjusts the rear trim height in response to changes in vehicle loading. The system consists of an air compressor assembly, air drver, exhaust solcnoici, compressor relay, height sensor, air adjustableshocks and air tubing. The compressor is activated when the ignition is on and a sufficient amount of weight is added to the car to cause the rear suspension to deflect more than approximately one inch. The exhaust solenoid is powered at all times, allowing the system to exhaust with the ignition off when excess weight is removed from the vehicle. If the system has a slight leak, the air compressor i l l run frequently for a w few seconds each time. For a larger air leak the compressor may stay on for up to seven air minutes. You should see your dealer forservice, but you can keep driving lyour Cadillac. 2-95