Question about 2004 Ford F150

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2003 F150 4x4 ABS activates at low speed approaching full stop in dry conditions; no ABS light on.

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Only when they is fault in any abs sensor abs light will light on that mean no problem

Posted on Apr 05, 2011

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I have a 2003 Nissan Maxima SE. Occasionally, the ABS activates during times where conditions don't warrant. Sometimes downhill, coming to a stop on flat, dry surfaces, etc. No real pattern.


Broken/damaged wiring,most likely at one of the front wheels.
90% chance broken wire.
5% chance ABS unit.
5% chance pickup sensor at one of the wheels.
Plug it into a scanner and check feed at every wheel while flexing and pulling on the ABS wiring at each wheel.

Apr 08, 2017 | 2003 Nissan Maxima

1 Answer

Brakes


Yes,have the ABS checked out.It shouldn't be activating on dry pavement at all. Make sure to have system bled properly by an expert. don-ohio (:^)

Jun 11, 2013 | 2002 Ford Explorer Sport Trac

1 Answer

Abs light stays out but abs applies at 10mph to stop even in dry conditions


this is a bad sensor or tone ring, you will need to have a scan tool to watch the speed reading to see which wheel loose speed to activate the abs and only with a scann tool can you do this, what you can try is to check the wheel bearings, jack up each whell and try to shake it if theres movement in the bearing then that may be the bad one, another thing is to scan abs codes and see if theres a code stored for the bad wheel, even if the lights not on there may be a code stored. i will bet its a wheel speed sensor or tone ring problem, good day,

Sep 21, 2011 | 2000 Chevrolet Blazer

2 Answers

When slowing down approaching a light the brakes work normally until just before stopping when the ABS kicks in and the brakes pulsate. Help!


One of the speed sensors are bad. It might be hard to tell which one unless you have a scanner. Do you ever see an abs light on?

Jul 18, 2010 | 2003 Chevrolet Suburban 1500

1 Answer

I have a 2000 GMC Yukon XL 1500. The antilock braked engage when slow to about 5 to 8 mph.


Here is a copy of a GM bulletin that applies to you concerns of low speed ABS activation.

Antilock Brake (ABS) Activation At Low Speeds (Clean Wheel Speed Sensor Mounting Surface) #03-05-25-007 - (09/29/2003)
Antilock Brake (ABS) Activation At Low Speeds (Clean Wheel Speed Sensor Mounting Surface)

1999-2004 GMC Yukon XL

Condition:
Some customers may comment on ABS activation at low speeds, usually below 8 km/h (5 mph). Upon investigation, the technician will find no DTCs set.

Cause
The cause of this condition may be an increased air gap between the wheel speed sensor and the hub reluctor ring due to rust and debris built up on the sensor mounting surface.

Correction
Measure AC voltage and clean the wheel speed sensor mounting surfaces.

Raise and support the vehicle.
Disconnect both the front wheel speed sensor (WSS) connectors at the frame and harness.
Place a Digital Volt Meter (DVM) across the terminals of each WSS connector.
Rotate the wheel clockwise approximately one revolution per second. The minimum reading should be at least 350 ACmV's. If the reading is less than 350 ACmV's, remove the wheel speed sensor. Refer to the applicable Wheel Speed Sensor Replacement procedure in the ABS sub-section of the Service Manual. Plug the WSS bore in order to prevent debris from falling into the hub during service.
Clean the WSS mounting surface on the hub to remove any rust or corrosion using a wire brush, or equivalent.

Important
Make sure that the sensor sits flat on the hub. Check the sensor flange against a straight edge to ensure flatness. If the sensor flange is distorted, replace the sensor.

Apply a thin layer of bearing grease to the hub surface and sensor O-ring prior to sensor installation. Use ONLY Wheel Bearing Lubricant, P/N 01051344.
Install either the original sensor or a new one in the hub. Ensure that the sensor is seated flush against the hub. Refer to the applicable Wheel Speed Sensor Replacement procedure in the ABS sub-section of the Service Manual.
Place the DVM across the sensor terminals and recheck the voltage while rotating the wheel. The voltage should now read at least 350 ACmV's.

Good luck and thank you for using Fixya.

Mar 09, 2010 | 2000 GMC Yukon XL

3 Answers

Abs comes on when turning at slow speeds when parking 2003 sierra


most likely you have a wheel sensor going out. The only way to tell which one is with a data scanner that can access the ABS system.

It will see all the tires spinning at the same speed until one shows a different speed.

Also make sure you have all the same tires and the air pressures are the same.

Mar 08, 2010 | 2003 GMC Sierra 1500

1 Answer

Abs problem with chevy dually


check the abs sencer on the front wheels, some time they get hot and melt, that make them short out.

Feb 18, 2010 | 2003 Chevrolet Silverado 3500

1 Answer

2003 Audi A6 ESP and ABS Lights Activate


I am having the exact same problem. The new sensor under the rear seat did not solve the issue. Does anyone have a solution?

Sep 15, 2009 | 2003 Audi A6

1 Answer

The abs light ativates on dry road conditions & lite baking lefts


YOU HAVE A DEFECTIVE WHEEL SPEED SENSOR, TO DETERMINE WHICH OF THE FOUR IS DEFECTIVE HAVE FORD DO A SYSTEM TEST FOR THE ABS TROUBLE CODE THAT SETS WHEN THE LIGHT COMES ON.

Sep 09, 2009 | 1996 Lincoln Town Car

1 Answer

Anti-lock brakes activate on dry pavement


First, is the ABS light on? Does it come on when it's doing it? Make sure the brake fluid is full, and the brakes are still servicable, ie, pads still have meat on them. If so, the abs control module or a speed sensor might be on the way out. This is a safety issue, and I would recommend getting the truck to a good mechanic to have it checked out.

May 24, 2009 | 2001 Chevrolet Tahoe

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