I bought a 2003 Lincoln Navigator and of course the check engine light came on 30 mi into drive home

kitkatbars

So far, the car has a low rumble from under the passenger side rear area near tire and when idle the car has a low buzzing noise. When turning it makes a weird noise in either direction. Any ideas?

Mr_Shiftright

Well no sense working in the dark. First off, find out what code is lighting up the Money Light. It's possible that the noises you are hearing may or may not be related, and might be separate issues.

I believe you have air suspension in the rear, so that might also be related to your problem. Get the codes read!