I was in a collision a while back and last night I just got a new Hub assembly, bearing, and ABS Sensor on the car. I drove it last night and noticed a slight "ticking" noise and my ACD selector lights are all lit up. When I drove to class this morning the sound seemed to get worse and worse. Any ideas guys? Its kind of worrying me, I hope its the transfer case or anything because it sounds like the sound is coming from the middle of the car, its hard to tell though

 

Well for one DO NOT DRIVE your car if all 3 lights are lit! Unfortunately for you it may already be too late...Check your ACD reservoir. After the car has been sitting for a couple of hours the fluid should go back into the reservoir and it should be filled up to the max line. Dont check it right after the car has been driven because the fluid is all over the place in different lines and such so you wont get an accurate reading. If your fluid is low it needs to be filled but more importantly there is probably a leak. Get under the car and inspect for leaks. Chances are one of the copper/brass (I forget exactly the material) lines is cracked which is leaking out the fluid. Find the leaky line replace it bleed the system and pray you didnt already cause serious damage to the acd. By the sounds it it though I think you may be too late...Good luck and if you have any other questions feel free to ask and I will try to help you out!