The "Service 4WD " Light is on. Also the four wheel drive is not working. What would cause this?
Well Ok you need 200 characters for this question to get read. I wonder if I have 200 characters yet. Ok I will try again to type 200 characters.
It could be several things. Since the light is on, you need to have the computer scanned to identify trouble codes. Most parts stores will do it for free. Have that checked and let me know what you find.