2009 GX. Changed out original spark plugs with exact same Iridium . Runs smoothly. Wondering if I failed to reconnect a vacuume hose or if I need to reset something. Tried taking off the gas cap but it didn’t help. Thanks in advance!

 

I disconnected the negative battery terminal it cleared up some of the codes. This is what remains.

 

Your center lock diff switch is on.

 

I hit the center lock diff button and it just flashed. How about the VSC OFF light? How do I reset that? Thanks!

 

The CDL light flashes when it's trying to move to the alternate position but is bound up, try driving back and forth on a loose surface like gravel, do some figure 8's, etc until it moves. The "VSC OFF" light come on when the CDL is locked, it may go off as well when you unlock the CDL.

 

I will try that. Thanks!

 

If you have a simple OBD2 device, see what codes it gives you, probably you nicked a vaccum hose when switching the last cylinder, which is a tight spot. Hopefully it is simple like a gas cap. I have techstream installed on my old laptop and it does wonders

 

Put it in reverse and backed up 100 feet and the Central Lock Differential and VSC lights both went off. Thanks for the help gang!