The ABS light is on when the pads were worn and reservoir is full.
After replacing both front and rear pads the light is still on. There are
two brake pad wear sensors. One is on the front right, the other is on
the rear right. The right sensor is slightly worn, or scraped by about
2-percent. (The Bentley manual suggest a new pad wear sensor if it's
slightly worn.) I may replace the sensor.
I'd carefully reinstalled both used sensors but the light is still on. How do
I locate the source of the ABS warning light?
The ABS light means the ABS system is inoperative, it does not mean that the
brakes are worn or the reservior is low.
The most common cause of the ABS light is the speed sensors on the wheels.
Actually, these sensors are the cheapest cause, perhaps not the most common
cause. The most common cause (according to my mehcanic) is the valve body
that modulates the brake pressure - this is also the most expensive cause.
The diagnostic tool will tell you what the trouble is.
Notwithstanding the other posts regarding the difference between ABS and the
brake pad sensor, if the pad sensor has activated the wear light then the
sensor has to be replaced, if refitted the brake wear light will stay on.
One is on the right front, the other is on the left rear, or vice versa. The
sensors are located on diagonal corners, not on the same side. Having said
that, these have NOTHING at all to do with the ABS light.
The right sensor is slightly worn, or scraped by about
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.