2001 Other Jaguar Models intermediate fault lights

What typically could be the cost to fix this problem
or what problems could cause this lighting to appear.

lights that appear on the dash:

traction control fault
ABS
Emergency brake light

They don't appear all the time but once they come on the stay on until the car is shut off. Then they may not come on when restarting. Also getting a
burning odor when car is in motion occasionally.