How do i reset ABS and traction control warning lights on a 2008 ford focus

SOURCE: after replacing the left front wheel bearing on a 2003 ford focus, the abs and traction warning light stay on

The bearings on the wheels has to be installed one way only, the rotor ring is built into the bearing and if installed the wrong way round the sensor cant pick up the wheel speed causing the ligt to be switched on in the cluster. The diagnostic equipment should pick this up as a fault once the car has been driven, it will see the sensor when you do the diagnostic if the car is standing still but once the car is moving and no signal is send from that wheel it would register a fault into the memory of the PCM that you would be able to retrieve later.
There is a way for you to test the sensor yourself by using a multimeter set on volts, you jack the vehicle up at that wheel, install a vehicle stand to support the vehicle to be safe, disconect the wheel speed sensor and probe the two wires into the sensor, spin the wheel by hand and a small amount of current will be produced meaning the the sensor is working and the wheel bearing is installed the correct way, you can also do a continuaty test on the sensor by switching the multimeter onto ohms, but be very carefull, if this sensor has three wires you cant do the continuaty test because of the integrated circuit in the sensor, the three wire sensors opperate on a voltage from 5Volt and it would be destroyed by the multimeter opperating on 9Volt.
If the continuaty test passes and the bearing is installed the correct way, the most comon fault would be a break in the wiring leading to the PCM
Hope this will be helpfull.

SOURCE: Ford Focus 2001 ABS, Traction Control and Emergency Breake lights

You need to get a diagonstic check as sooon as the light comes on, dont turn ignition off as thi may delete the fault code Good luck Davelee

SOURCE: ford puma abs and traction warning lights

The first thing i would do is check the wiring on all four wheels.It could be a faulty solenoid.The next thing is a diagnostic check.

SOURCE: ABS & traction control just went out on 2008 Ford Escape.

Chances are it is a bad ABS sensor. Need to get scanned to know for sure and which one.
Not much i know but I hope that helps.

SOURCE: traction control light and abs light came on at

most likely a wheel sensor concern

if the computer cannot see the wheel speed then you lose ABS and TRACTION control

go to almost any part store and have them pull codes
assuming you have a VSS code, replace the suspected part or continue diagnoses for possible wiring concern