Intermittent grinding when braking and dash warning lights turn on

Good afternoon,

There is a fault in the ABS system. That fault has set a code and I need the code that is stored. The most likely failure are the wheel speed sensor but needs to be confirmed.

https://www.2carpros.com/articles/abs-warning-light-on-easy-repair-guide

https://www.2carpros.com/articles/abs-wheel-speed-sensor-test

https://www.2carpros.com/articles/how-to-replace-an-abs-wheel-speed-sensor

The grinding is the ABS applying when you brake.

Did the dealer tell you why they could not communicate? They should have the equipment to do this.

A parts store can read the codes for you for free. See if they can read the system and retrieve the codes for you.

Roy

You need to have someone read the codes. That is the only way we can help. We need the codes.

Take it to a parts store and see if they can give you the codes. That is a free service.

Roy

This is for the rear ABS sensors. It indicates the right side but it could be the left as well.

I would replace both. You could check each one individually with a ohm meter. You disconnect the sensor and measure the resistance of the sensor. It should be 800-1600 ohms.

https://www.2carpros.com/articles/abs-wheel-speed-sensor-test

https://www.2carpros.com/articles/how-to-replace-an-abs-wheel-speed-sensor

Roy

Hint:

Use the same procedure for the lh side and rh side.
The following procedure is for the lh side.
If the sensor rotor needs to be replaced, replace the rear axle hub and bearing assembly.
The rear speed sensor is a component of the rear axle hub and bearing assembly. If the rear speed sensor malfunctions, replace the rear axle hub and bearing assembly.
Precaution
Notice:

After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (- ) battery terminal notice before proceeding with work . [ introduction: repair instruction: precaution ]

Disconnect cable from negative battery terminal
Notice:

When disconnecting the cable, some systems need to be initialized after the cable is reconnected . [ introduction: repair instruction: initialization ]

Remove rear wheel
Separate rear disc brake caliper assembly [ axle and differential: rear axle hub bolt: replacement+ ]
Remove parking brake shoe adjusting hole plug [ brake (rear): rear brake: removal+ ]
Remove rear disc [ brake (rear): rear brake: removal+ ]
Disconnect skid control sensor wire
Using a screwdriver, disconnect the connector from the rear speed sensor.

Image
Notice:

Be careful not to damage the rear speed sensor.

Remove rear axle hub and bearing assembly
Remove the rear axle hub and bearing assembly . [ axle and differential: rear axle hub: removal+ ]
Hint:

The rear speed sensor is a component of the rear axle hub and bearing assembly. If the rear speed sensor malfunctions, replace the rear axle hub and bearing assembly.
If the sensor rotor needs to be replaced, replace the rear axle hub and bearing assembly.

Hub assembly

Axle and differential: rear axle hub: removal; 2017 my camry [06/2016 - ]
Hint:

Use the same procedure for the rh side and lh side.
The procedure listed below is for the lh side.
Remove rear wheel
Separate rear disc brake caliper assembly [ axle and differential: rear axle hub bolt: replacement+ ]
Remove parking brake shoe adjusting hole plug [ brake (rear): rear brake: removal+ ]
Remove rear disc [ brake (rear): rear brake: removal+ ]
Disconnect skid control sensor wire [ brake control / dynamic control systems: rear speed sensor: removal+ ]
Remove rear axle hub and bearing assembly
Remove the 4 bolts and the rear axle hub and bearing assembly from the rear axle carrier sub-assembly.

Image
Notice:

Use wire or an equivalent tool to keep the parking brake assembly from hanging down by the parking brake cable assembly.