So I bought this car off a friend of mine and Im currently trying to fix all the lights and issues it has, it recently had a parking brake system error light that would pop up everytime you’d hit a bump, I was able to fix it by changing out the speed sensor on the drivers side. The abs light is still on and the traction control light is also on. Im thinking possibly a wheel hub is damaged or extremely dirty that when I hit a bump it goes off. One thing I did notice was that when I take off to drive speedometer needle gradually increases until it gets to a certain point and then goes normal also turning the lights back on. Maybe a tone ring is bad, not sure please help. Thanks!