Ram 3500 duallie 4X4 has a service 4wd light on
I test drove a ram 3500 duallie 4x4 today and it had a service 4wd light on.
The service light doesn't come on for good 30 secs, but after 30 sec it would show serv 4wd light.
Do you know what's causing this problem? and of course it's the turbo diesel engine. Thanks in advance.