Have a warninig sign comes on . It says VT4. What

If it says VTM-4 that is your VTM-4 indicator:

This indicator normally comes on for a few seconds when you turn the ignition switch to ON (II). If this indicator comes on at any other time, there is a problem in the 4WD system. Have your vehicle checked by a dealer.

The Variable Torque Management 4WD System (VTM-4) automatically transfers varying amounts of engine torque to the rear wheels under lower traction conditions.

You can try the following:

To Disengage the VTM-4 Lock, do one of the following:

1. Press the VTM-4 Lock button.

2. Move the shift lever to D or D .

3. Turn the ignition to LOCK (0).

The VTM-4 Lock will temporarily disengage when the vehicle speed exceeds 18 mph (30 km/h). It will automatically engage again as the speed slows below 18 mph (30 km/h). The button light will remain on.

Hope this helps you understand the light. If not, leave a comment and I will try to help you further.