My 06 AT NAVI is now having this issue, but there hasn't been any modifications made to the car's electronics.
I have had a lot of buildup on the battery positive terminal, so I deep cleaned up both connectors but the VSA light/gauge issue remained.

Next task is to check the battery as well as check the BUS diag through the navi screen.

Other electrical issues I have with my car - curious if others have them as well.
- Intermittent / flickering dash-top Clock/LCD display
- Passenger side door open/close doesn't work
- Bluetooth module failed (and removed)

I also have an occasional glass+metal like squeak during operation of the driver side window. Maybe there is water leaking into the door somehow? Is there a ground point inside of the driver door?

Hopefully it's just the battery but after reading this thread, I wonder if I have a grounding issue.

Thanks for any additional help or direction.

 

Forgot to include in the list of current issues:
- Fully charged A/C isn't working

 

FYI, I've replaced the battery and the positive battery cable and it didn't resolve the the issue.

 

I never did resolve this issue. It's still intermittent and mainly in warm weather.

 

An old thread I know, but mine is doing the same thing. Has anyone solved this issue?

 

Never resolved, still have the issue in the summer, but not in colder weather.