My 06 4.8iS with 55k has developed and odd fault. When it is cold out (below 40 degrees, relative, I know) , the DSC/4x4 warning lamp comes on and stays on at startup.

I do not get the dreaded 3 warning light DSC/Check engine/Battery issue.

It goes away when the vehicle gets warm.

It did stay on for about a day last week and went away when I put in a new battery as a maintenance item. Oddly enough, it came on for a minute with the new battery so I rechecked and attached the cables and it went away after 15 ft of driving. The old battery was only replaced as it is 4 years old but it checked out fine on a battery tester at the supplier of the new battery after I had already put the new one in.

This morning, 37 degrees at start up, on it comes. I drive to the stealer to make an appointment and when I get back in the car, its off again.

Anyone have any ideas / experience ?

I have read and re-read the manual and posts here...what potential damage may I be doing driving with it on ? I do have an appointment to be reamed with a smile by the dealer in the morning.

Thanks

David