Check Air Suspension

The CHECK AIR SUSPENSION indicator illuminates when a concern in the air suspension system is detected or when the air suspension switch is in the OFF position. During prove-out, when a concern is detected or the air suspension switch is OFF, an audible tone will sound and the CHECK AIR SUSPENSION indicator will flash on and off for five seconds. The CHECK AIR SUSPENSION indicator will then remain illuminated until the concern is corrected or the air suspension switch is switched ON.