ABS light on dash

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Sep 17, 2008 | 08:38 PM

moosed

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ABS light on dash

Hello all,

Have a 2003 V10 Limited that has the ABS light on the dash on. Just happened today, any ideas on what to check and is this truck safe to drive as is until I can either fix it myself or bring it in to the dealer.

Thanks

Tony

Sep 17, 2008 | 08:47 PM

VaSheriff

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Just a shot in the dark..... In addition to several other symptoms and malfunctions, my ABS light came on when the wiring inside the steering column had become exposed.

Read this subject..... all 3 pages

https://www.ford-trucks.com/forums/7...uestion-3.html

Sep 17, 2008 | 08:52 PM

VaSheriff

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This thread covers the exposed wiring problems too. Seems like it's happening to more and more Excursions. And like I said, the ABS light coming on was one of my symptoms as my wiring became exposed.

https://www.ford-trucks.com/forums/7...y-550-tow.html

Sep 18, 2008 | 01:07 AM

Monsta

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From: Washington State

You could also check the wiring and the sensor on top of the rear diff. You can pull the sensor out and clean it if it is gunked up with stuff. Sometimes that works. The sensor is the speed sensor and the ABS uses it.

Front ABS sensors could also be dirty but that requires you to pull the wheels.

Both are the first things to check (along with VaSheriff's suggestion) since all of them don't cost anything but time.

Sep 18, 2008 | 08:05 AM

moosed

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Thanks guys for the fast reply. Yep I have followed the steering column wire thread and will check that and the sensor on the rear diff as well. BTW the light went out this morning.

Monsta: where on the front are the sensors after the wheels come off?

Thanks again for the fast replies.

Tony

Sep 18, 2008 | 01:38 PM

Monsta

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From: Washington State

For the front brakes on a 4x4:

"B" is the sensor. "A" is the electrical line.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~

(ABOVE) For rear axle sensor. #2 is bolt, #1 is plug from harness.

````````````````````````````````````````````````

Clean and inspect the rear axle speed sensor.

1. Clean the axle mounting surface.

2. Inspect and clean the magnetized rear axle speed sensor pole piece.

3. Inspect the rear axle speed sensor O-ring for damage. Install new if necessary.

4. Lightly lubricate the rear axle speed sensor O-ring with rear axle lubricant.