[Gen]

Well I had a really nice post on how to fix both items but the site won't allow me to submit links or jpg photos.

Anyway you may have a blown fuse for the ign 3 circuit located in the engine conpartment fuse block. I had the same problem with the fuel gage reading E when in fact it was full, finding a blown fuse and replacing it solved that problem

Service ride control - means that one of your shocks or stuts may be leaking or you have a bad compressor or one of the relay's are not working. Mine was a combo of a bad ground to the relay center in the trunk ( the g400 grd strap is located behind the rear seat drivers side on the back seat crossmember)

Here is a good place to go for passive struts & shocks www dot arnottindustries dot com
I spent $378 dollars on electronic air struts for the front so this would save you some cash