Abs light comes on and 4 by 4 light blinks - 2004 Ford Explorer

First, check to see if your ABS and your TCS fuses are good. A lot of times, if both lights come on, it senses a failure in the braking system. Your vehicle will disable the abs if it finds a problem in the braking system, hence the red brake light/hand brake light coming on in the dash. Get a code scanner that also reads the abs module. You could have a bad wheel sensor, which is tied to your TCS and your ABS system. Either that, or you ABS module could be bad.

vehicle speed sensor located on rear output case of transfer case

I have a 2005 Ford Escape and have this problem. I can tell you that if the light comes on every .8 miles and blinks for 8 times, learn to live with it. After taking to dealer when it first started in about 2008, having the tone ring changed on the CV's for the tires, after been told maybe an alien lived in there....the light sell happily blinks on.If it comes on and stays on I would worry more than if it blinks intermittently. Mine has what they call "Intelligent 4-Wheel Drive" [which must be an oxymoron], but still has the 4X4 light to indicate when supposedly it switches in to 4-wheel drive according to driving conditions. Certainly if you haven't noticed any other abnormalities with how the vehicle drives this could very well be the culprit.Hope this helps.

O/D blinking indicates that there is low transmission fluid in the system ABS light comes on when there is a problem with the ABS system, most times the tooth ring has broken

there is a abs sensor out some where have it scaned to c wicth one then replace bad clear the codes and its off.goodluck

Check this page. Very usefull for this problem.
http://www.ford-forums.com/ford-escape/43888-2006-escape-abs-4wd-light.html

here is a link to a good abs site,it will tell you the proper way to get abs codes and a code chart hope it helps DBhttp://www.aa1car.com/library/abs_kelseyhayes_rwal.htm

Have someone check the wheel speed sensors. One is probably bad and not sending data to the computer. This will shut off your ABS system and all-wheel drive, because the system can't read the speed of one of your wheels. It needs input from all 4 wheels for the systems to work.

Hi,

Most Honda ABS warning light will blink in 2 parts, main system and then sub system to form the code pair. As an example is 3 blinks then 3 blinks is a code 3-5. Once determined, reference below listing.
1 - ABS pump motor over-run
1 2 ABS pump motor
1 3 high pressure leakage
1 4 pressure switch
1 8 high pressure system
2 1 parking brake
3 1 pulser RF
3 2 pulser LF
3 4 pulser RR
3 8 pulser LR
3 12 different diameter tires
4 1 wheel sensor RF
4 2 wheel sensor LF
4 4 wheel sensor RR
4 8 wheel sensor LR
5 - rear wheel lock - R/L
5 4 rear wheel lock - R
5 8 rear wheel lock - L
6 - fail-safe relay - F/R
6 1 fail-safe relay - F
6 4 fail-safe relay - R
7 1 solenoid - RF
7 2 solenoid - LF
7 4 solenoid - R
8 1 ABS function
8 2 CPU comparison
8 4 IC self-check

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

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