2004 LINCOLN LS TRACTION CONTROL LIGHT FLASHING & ABS LIGHT ON & BRAKE LIGHT ON. DTC CODES B1342, C1730, C1998.

ABS Module Calibration failure
the car needs to be
all brakes inspected good
and ABS scan tool scanned.
CAN Communication Bus Fault
can bus failures are not good. (and hard to find)
Read more: https://www.autocodes.com/u1900_lincoln.html

First you need to have EBCM - electronic brake control module check for DTC'S - diagnostic trouble code's . If the light is on there is a code stored . I think most part stores can do this and for free . After you find out what code is stored , looking up that code in service repair information for diagnostic trouble shooting chart would be next step . There are a few codes too.
DTC C0035 or C0040
DTC C0045 or C0050
DTC C0110
DTC C0131
DTC C0161
DTC C0186
DTC C0196
DTC C0201
DTC C0240
DTC C0241 or P0856
DTC C0244 or P1689
DTC C0245
DTC C0283
DTC C0287
DTC C0290 or C0292
DTC C0455
DTC C0550
DTC C0558

Find the code do the diagnostic's , fix the problem , wiring issue's , a sensor , bad module ,what ever it is . The light will go out then . Here is a sample of code discription .
• DTC C0035 Left Front Wheel Speed Sensor Circuit
• DTC C0040 Right Front Wheel Speed Sensor Circuit

Access the ABS Module & check the codes

Diagnose the system & component test, to find
the problem with Trac Control

The traction control works off the ABS system You will need a scan tool capable of reading ABS codes before you can further diagnose the problem If you are able to retrive the abs codes searrch on the internet for the trouble code Many times it is a wheel sensor or bad connection on the sensors .

Had the same problem with my 2002 Lincoln LS, it was a bad wheel speed sensor. The right front wheel bearing had some play in it, so I had the hub assembly replaced. The hub assembly comes with a new wheel speed sensor attached. After I replaced the hub assmbly with sensor, the ABS and Traction Control lights went off. No problem since!

abs pump might be fryed

it might be a loose abs cable behind one of the brakes?

I would take the car right back to the shop that cleared the code. There was a 50/50 chance of clearing the codes. The good thing is now the shop will be able to pin point the failure with the fresh code. Most of the time the abs controller is going out. The controller also might not be readiing the tire sensor . If one sensor goes out the abs light will come on. The controller could be working fine and one of the sensor has to be replace. That is the cheapest cost. The abs controller and abs hydraulic controller is big bucks to replace , The part is around 1500 bucks. The tire sensor are around 25.00 35.00 each.

The manufacture has made the vehicle to where if the abs system is not working correctly then the brake system will automatically work as normal brakes with out the abs system.

Yeah its a pain in the you know where to take back but I would fight tooth and nail with the shop not to charge you any additional check out time. If the shop stands behind there work they will not charge you additoinal check out time.

Good Luck

have the car scanned with a scanner capable of reading ABS codes,get back to me with the code and we'll go from there. sounds like like one of the wheel sensors is bad. this controls both ABS and TRACTION CONTROL

ABS and traction control really are only for panic stops and if your tires slip on wet surface's and yes each tire has a sensor on it. However if the brake light comes on this has nothing to do with the ABS or traction control lights. It's not a parking brake light. This light tells you, you have a serious brake problem.