Similar problem with my 2002 Kia Sportage. Lever engages, dash light indicates 4WD but truck still in 2WD. Dealer checked out, told me "solenoid valve frozen" and needs replacement. .
Check the fuses
Its a ford, found on road dead!
i think these is not a proper question i do not know
Make sure you lock the hubs if your vehicle has locking hubs. However, it sounds like a fuse, check your fuses. Kev.
check the fuses.
First, the clutch won't engage if the refrigerant level is low. Start there. Next, check the sensor at the receiver/dryer.
Yes it depends what kind of vehicle you drive as to where the fuse is located.
I have found them myself ... my car is a right-hand drive car and the fuses are on the left-hand side, under the dashboard with a protective panel that opens down (protects the fuses from your feet etc)
check the thermostat that runs the fan.
This could be because you have a leak in you A/C system causing a loss of freon. When there is not enough freon in your system the A/C compressor will not engage, it will harm the compressor.
try the starter relay.
Probably low on freon. Jump the low pressure connector.