> Is it possible to damage ABS sensor while installing tires? ( I got the light on after someone istalled new tires)?

Is it possible to damage ABS sensor while installing tires? ( I got the light on after someone istalled new tires)?

Posted at: 2015-01-07 
Is it possible to damage ABS sensor while installing tires? ( I got the light on after someone istalled new tires)

Yes, it is possible. Not easy though.

ABS depends on the individual speeds of the tires, so every drive shaft has a sensor and a ring of notches.

If the sensor is out of place or the ring is broken, you get ABS light on and usually the system shuts down.

Neither the ring nor the sensor is usually easy to access, so breaking them is not easy either. More likely is that the wire has been damaged or has run its course and needs changing.

With OBD you can usually check which wheel speed is wrong, if the fault code does not specify.

You need a diag of the system fault(s) before saying anything.

If the magnets are covered with ferrous dirt, it is disturbed during work on your wheels perhaps.

The metallic particles can surround the magnet making the mV signal out of range. And "noisy".

I suppose you should let them try to clean, as a sporting chance to correct it.

Connector or wire damage means a new sensor is required because of resistance values.

Stones can damage the excitor ring. If you had that, it requires teardown for access.

Finding the locations of the wheel speed sensors on your year and model will add to your understanding.

Testing of sensors with a DVOM can tell you if they are functioning , but you need oscilliscope data for verifying the signal is clean.

Metallic brake lining wear can accumulate particles in the surrounding environment.

It seems unusual for wheel and tire removal to be the one and only cause.

I have seen sensors that were difficult to diagnose,

no definite cause could be found.

Yet the changes the manufacturer made was included in the updated part.

If yours has a service bulletin about it, That can also explain the

Abs concern.

Yes as you remove tires from an axle dirt and rust can get on the sensor magnet and throw off the readings. Worse case is they bumped out of adjustment or broke the wire on the sensor.

Installing wheels, possibly. Not by installing tires, because that's done away from the vehicle.

On what year make and model of car? ABS systems are entirely different on most makes and models of cars.

Anything is possible but you would have to be quite careless when installing those tires.

I would guess that it is either a coincidence or maybe a tire is the wrong size so it's turning at a different speed than the other tires and triggering the ABS light.

I did, too. It went out after a few start-run-shutoff cycles.

Yes it is.

Is it possible to damage ABS sensor while installing tires? ( I got the light on after someone istalled new tires)