My front air suspension was fine yesterday. Temps dipped last night (i'm in southern Louisiana where it's almost always warm) into the 30s. Today, my front end won't go up. Compressor is running and back end is fine. Air rushing out sounds like hose instead of bags. Any tips on replacing the hoses? Also, AdvanceTrac warning is on - what is that and how do I address the issue?

 

The advance trac light could be due to the lowered suspension. Fixing the line leak will likely fix everything.

The simplest fix for the air lines are to slip a short length of vacuum hose over both ends.

 

My friend at the shop patched one leak in the lines but now passenger side will rise and driver side won't. Leveler sensor busted on both sides somehow. Air bags appear fine. After pricing different solutions, converting to coil over was the most economical. $800 for the full conversion. Not what I wanted to hear before the holidays.

 

There is only one line to front air springs out of the compressor. Something really bad must have happened.

My previous 2005 Navigator exhibited the same type symptoms the first winter I had the truck. My leak was at the filter/drier on the output of the compressor. The line was leaking at the fitting plus I found that filter/drier was leaking out of the compressor fitting. I replaced the o-ring on the filter and reseated the line fitting. Problem was solved on the front end.

A few weeks later I found one of the rear air bags was leaking internally. I replaced it with a complete assembly from Suncore. It was a well built piece, better than the original IMHO. I was going to replace the other rear one, but traded it for my current black 2006 Navigator.

So far no leaks on my "new" ride.