2003 Ford Windstar Both Brake light and ABS brake light come on

You should check the brake fluid level in the master cylinder and check that the electronic speed sensors are connected and that the tone rings are clean.

While not for your specific car - the systems are based on the same parts and theory - check this video starting at 1:17

http://www.youtube.com/watch?v=E4MODlrFTKM

Red lite comes on at startup to ck. system. If amber lite stays on, ck. brake fluid level and see if emergency brake is partly up. This shows problem with anti lock system if it stays on, not main brake system. If all is ok with this but still stays on Have ABS system checked. Haynes repair manual, 95-2003 Windstar, all models.

I believe therre was a recall for this problem on the windstars. They have to add an additional small wiring harness to the ABS/Brake system Call a dealer, Have your VIN number ready

scan for codes may be faulty sensor or wheel bearing starting to go
loose conection or rubbed wire

Abs light on means the ABS sytem has a fault.
You can determine what is wrong by counting the flashes (they say) and then put the data in on the web.

IE abs, windstar, failure, 3 flashes.

The brake light on is most likely picking up on uneven brake pressure, or a failing master cylinder/
You may not feel any difference yet, give it a little time, feel for a pedal fade at a light.

it just might be the abs sensor might be dirty you can either clean thm or see if the dust cover has been damaged

it could be a bad fuse, but is most likely a problem with your abs system.

Do you mean the van is actually braking like a Starsky and Hutch move or that the warning lights indicate that they are on? If its lights then you may be low on brake fluid. Maybe a module leak

The ABS light is coming on because the Red brake light is on. This is the saftey feature built in. The ABS will disable it self if red light is on. You are either low on brake fluid or the float is sticking in the master cylinder reservior.

Have you had anyone try to clean and adjust the rear brakes? You will need a shop to scan the van for ABS codes first to cure the ABS light.