The anti-lock light came on and found out that the sensor on the right front wheel gone bad. Do i need to change all 4 sensors? How expensive is fix. need your help. Thank you.

This may assist, but check the relevance for your year model, and make sure you have the correct section of this document for your engine

http://www.turboninjas.com/camry/br.pdf

It is a 12.6 Mb download. You will probably find

DTC No. 31 is for the right front speed sensor.

DTC No. 32 is for the left front speed sensor.

DTC No. 33 is for the right rear speed sensor
DTC No. 34 is for the left rear speed sensor.

The ABS system has nothing to do with replacing the pads and rotors, the abs is anti braking system the system is designed to keep the wheels from locking up when brakes are applied hard, . you will first need to have the abs computer scanned for codes, the computer will pick up a problem in the system and turn off the system and then turn the abs light on and last it stores a code in the computer, the code will tell you what part of the system has failed. the codes or code are very helpful in pinpointing the problem. the abs system contains speed sensors on all four wheel and a anti braking module and computer, the most common reason for a abs code is a bad wheel speed sensor. this is the most common problem seen, the code for example may read something like this poXXXXX right front speed sensors.again start by getting the codes,good day.

Yes on both questions, I have gotten bad ones right out of the box

you have one on the inside of each wheel.
SECTION 206-09A: Anti-Lock Control 2002 Lincoln LS Workshop Manual
REMOVAL AND INSTALLATION Front Wheel Speed Sensor
Material Item Specification RTV Silicone Sealant
FSTZ-19G204-AB (Canada CXC-114A) NAVSTR Sealer
Removal and Installation

1. Raise and support the vehicle. For additional information, refer to Section 100-02 .

1. Position the inner splash shield aside.
   1. Remove the pin-type retainers.
   1. Position the inner splash shield aside.

1. Disconnect the anti-lock brake sensor electrical connector.

1. Remove the anti-lock brake sensor harness from the brake hose clips.

1. Remove the anti-lock brake sensor.
   1. Remove the anti-lock brake sensor clip.
   1. Remove the anti-lock brake sensor.

1. NOTE: Make sure the anti-lock brake sensor is fully seated before installation of the new clip.
   To install, reverse the removal procedure.
   • Apply a 2.5 mm (0.1 in) bead of silicone sealant to the outside diameter of the anti-lock brake sensor.

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Rear Wheel Speed Sensor Removal and Installation

1. Raise and support the vehicle. For additional information, refer to Section 100-02 .

1. Disconnect the rear anti-lock brake sensor electrical connector.

1. Remove the rear anti-lock brake sensor harness from the control arm clips.

1. NOTE: Clean off dirt and foreign material that may have collected around the rear anti-lock brake sensor before removal.
   Remove the rear anti-lock brake sensor.
   1. Remove the anti-lock brake sensor bolt.
   1. Remove the anti-lock brake sensor.

1. To install, reverse the removal procedure.

I woudl say either A) the sensor on the wheel is bad, or B) the unit needs service. Refer to a reliable auto center for inspection.
abs is anti-lock braking sytem.

awd disable is usually a $200 tube type sensor in the rear diff. abs light is usually front hub bearing

IF YOU HAVE FOUR WHEEL ANTI-LOCK BRAKES YOU MITE HAVE I FRONT WHEEL SPEED SENSER GONE BAD OR A POSSIABLE WHEEL BEARING GONE BAD (BECAUSE ON SOME FORD TRUCKS THE WHEEL SPEED SENSER READS OFF THE WHEEL BEARING.

these lights come on when a wheel sensor goes bad or has a bad connection. I unplug mine and clean them up front. I have even found them unplugged before. Sometimes a rainey day will affect them. It they are bad it involves changing the wheel bearing assembly which is not cheap but not a hard job to do. Good luck

Just an indication that a sensor has probably gone bad, and thus the sysem has defaulted to "off". You can test this, of course... Find a safe place, accelerate to 50 MPH. Hit brakes as hard as you possibly can press them.

EEEEEEEEERT!!!!! ? Anti-Lock is off.

Thumpa-Thumpa-Thumpa? Anti-Lock still working!

Thumpa - (screeeee from one wheel) - Thumpa? You've found the culprit...

Anti-Lock Control —Vehicles Built After 03/2002 The 3-channel anti-lock brake system consists of the following components:

• front wheel speed sensors
• front wheel speed sensor rings
• hydraulic control unit (HCU)
• Anti-lock brake control module (ECU)
• rear wheel speed sensor
• rear wheel speed sensor rings
• yellow anti-lock brake warning indicator

The 4-channel anti-lock brake system with traction control and stability assist system consists of the following components:

• active brake booster with integral solenoid
• brake booster release switch
• front wheel speed sensors
• front wheel speed sensor rings
• hydraulic control unit (HCU)
• stability assist module (ECU)
• stability assist event indicator
• lateral accelerometer
• longitudinal accelerometer (4x4)
• rear wheel speed sensors
• rear wheel speed sensor rings
• steering wheel position sensor
• yaw rate sensor
• yellow anti-lock brake warning indicator
• brake pressure transducer
• traction control switch

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I suspect the abs issue is causing the speed control not to work if it happened at the same time the cruise control stopped working. When the yellow ABS light comes on, it means the ABS is dactivated. You may have a faulty accelerometer which senses acceleration and yaw (side to side lean). I have not seen a bad one but you said it is sensitive to acceleration.
I would unplug it and see what happens. The connector should have a small tab to depress so you can pull the connector out.
Here is where it is:

Accelerometer Removal and Installation

1. NOTE: The accelerometer is located under the center, rear passenger seat carpet. (I think you have to remove seat for access).
   Cut the carpeting along the perforations.

1. Disconnect the electrical connector.

1. Remove the nuts and remove the accelerometer.

Have dealer hook up tester and pull fault codes if you can't find an easy solution.
Some background info

A malfunction in the anti-lock brake system will cause the anti-lock brake control module to shut off or inhibit the system. However, normal power-assisted braking remains.

Malfunctions are indicated by the yellow ABS warning indicator in the instrument cluster.

The anti-lock brake system is self-monitoring. When the ignition switch is turned to the RUN position, the anti-lock brake control module will carry out a preliminary self-check on the anti-lock electrical system indicated by a three-second illumination of the yellow ABS warning indicator in the instrument cluster.

During vehicle operation, including normal and anti-lock braking, the anti-lock brake control module monitors all electrical anti-lock functions and some hydraulic operations.

Each time the vehicle is driven, as soon as vehicle speed reaches approximately 20 km/h (12mph), the anti-lock brake control module turns on the pump motor for approximately one-half second. At this time, a mechanical noise may be heard. This is a normal function of the self-check by the anti-lock brake control module.

Pedal pulsation coupled with noise while braking on loose gravel, bumps, wet or snowy roads is normal and indicates correct functioning of the anti-lock brake system.

Warning Lamp Indicator
The anti-lock brake system (ABS) uses the yellow ABS warning indicator to alert the driver of a malfunctions in the ABS.
The yellow ABS warning indicator will come on to warn the driver that the ABS has been turned off due to a symptom that exists in the ABS. Normal power assist braking remains but wheels can lock during a panic stop while the yellow ABS warning indicator is illuminated.

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Please report back, I am curious if that is what it is. Good luck