Anyone had the dealer reflash their ECU and had 4WD issues?

[03V84R]

After the reflash my 4Lo dash switch does nothing! No dash light,no beeping, nada!
Has anyone experienced anything similar?
When I took it back they said the reflash couldn't have caused it.
It worked perfectly before.
What next?
Any advice would be appreciated.

 

[riceandpho]

remove the climate controls and check all connections at the 4wd switch and any loose plugs.


did you recently install a new radio?

 

[03V84R]

Dash has not been touched. But I'll check that to rule it out. Hopefully it's something simple.