Service Air Suspension?

[CBR_Raven]

ok, i just changed out both of the rear suspension air bags and now it's reading "service air suspension" it was working fine after the bags were installed but now i don't hear the air compressor turning on. does anyone have a clue what the problem could be?

[KingVinnie]

Try disconnecting the neg battery term. for 10 mins to reset the computer.

[tower]

Make certain that the valve cap is on your compressor nipple.

[CBR_Raven]

Originally Posted by tower

Make certain that the valve cap is on your compressor nipple.

where would that be located? i only replaced the air bags...i didn't touch anything else.

[tower]

It's the fitting by your air compressor switch to whitch you attach the tire filler hose. It looks like the top end of a schraeder (tire) valve. Leaving it uncapped will produce the exact problem you describe.

[CBR_Raven]

i've never had a cap on that valve but i will be sure to put one on it from now on.

[CBR_Raven]

Originally Posted by KingVinnie

Try disconnecting the neg battery term. for 10 mins to reset the computer.

ok, that worked...i disconnected the battery for about 15 minutes and everything seems to be back to normal

[HUMTECH]

Anytime any air suspension components are changed A ride height calibration needs to be done which to my knowledge only the dealer has the right tools to do. Need A tech 2 scan tool and ride height calibration blocks. The light may be out but that doesn't mean ride height is learned.

[CBR_Raven]

Originally Posted by HUMTECH

Anytime any air suspension components are changed A ride height calibration needs to be done which to my knowledge only the dealer has the right tools to do. Need A tech 2 scan tool and ride height calibration blocks. The light may be out but that doesn't mean ride height is learned.

ok, i'll keep that in mind. however, everything seems to be fine for right now after i disconnected the battery for a while. i'll keep an eye on it to see if anything changes. i would hate to have to go to the stealership just to get the system calibrated...i'm sure they would charge me at least $120 flat rate.

[ROX]

Originally Posted by tower

It's the fitting by your air compressor switch to whitch you attach the tire filler hose. It looks like the top end of a schraeder (tire) valve. Leaving it uncapped will produce the exact problem you describe.

I have never had a problem without a cap on my hose fitting. I think I lost it about a month after I got the car. 2 years and no problems. If you're losing air thru that fitting, I'd say theres something wrong with it or the compressor wouldn't ever turn off.

CBR : I replaced an airbag on my rig once, (2 days old) and we didn't have to recalibrate the computer.

[tower]

Originally Posted by H2 Rocks

I have never had a problem without a cap on my hose fitting. I think I lost it about a month after I got the car. 2 years and no problems. If you're losing air thru that fitting, I'd say theres something wrong with it or the compressor wouldn't ever turn off.

CBR : I replaced an airbag on my rig once, (2 days old) and we didn't have to recalibrate the computer.

Interesting, Roxie. Every time I leave the cap off, the ?SERVCE AIR SUSPENSION? DIC notice comes on. Every time I put the cap on, it goes away. I wonder if it?s an '03 thing. How are you and yours, BTW?

[ROX]

Originally Posted by tower

Interesting, Roxie. Every time I leave the cap off, the ?SERVCE AIR SUSPENSION? DIC notice comes on. Every time I put the cap on, it goes away. I wonder if it?s an '03 thing.

That's strange. I don't remember that happening with my 03 either. I wonder if you have a leak in the little fitting back there. I know, first hand, if you leave the hose on and try to move the vehicle the air ride will lower to the stops. The hose bib doesn't even have an electrical connection on it to throw a code so it's got to be some sort of pressure thing back there. Hummtech definitely would know more than I do, I'm sure.

Everyone's doing great! Thanks for asking. Good to see you back

[HUMTECH]

If your getting A serv air susp message with the cap off likely the valve is leaking, the cap will seal off this leak enough to not cause A problem, if the compressor has to run continuously to keep up with the leak it will set an overheat code and shut the compressor down to cool it. Also could throw an exhaust solenoid code thinking the system is exhausting. Simply take the cap off and put some water in the valve and watch for bubbles(not the cheerleader next door).

[HUMTECH]

If you can pull the code, most obd2 readers wont, let me know and I can try to help ya out. Codes are stored under chassis option and most will only give powertrain codes.