Why would ABS light come on after changing wheel bearing?
Rust buildup under the sensor can move it, causing a wider than normal air gap between the sensor and the toothed tone ring. Or, it determines that the weak signal indicates a bad sensor, so it lights up the ABS light. You can try removing the sensor from the old wheel bearing hub and cleaning off the rust.
Why are wheel bearing hubs equipped with wheel speed sensors?
When engineers came up with the idea of putting the wheel speed sensor (WSS) and tone ring inside a sealed wheel bearing hub assembly, it seemed like a great idea. The sealed environment would help protect the sensor and make it less vulnerable to damage or contamination from the outside.
What kind of hub assembly does front wheel drive car use?
On cars made before 1997, front wheel drive cars use wheel hub assemblies at each wheel and rear wheel drive vehicles use two individual bearings and seals in both front wheels. Unlike a wheel hub assembly, bearings can be serviced.
Where is the wheel speed sensor tone ring?
The wheel speed sensor tone ring is built into the wheel bearing assembly, unlike other wheel speed sensor setups where the tone ring is on the outside of the outer CV joint housing, axle or hub. On later applications, the WSS tone ring is exposed and very vulnerable to corrosion from road salt and road splash.
What causes a wheel bearing hub to go bad?
But nothing is perfect, and when moisture seeps into the hub, it corrodes the tone ring. The result is an uneven WSS signal that confuses the ABS system. The first signs of trouble may be the ABS system kicking in when braking at low speed and/or the ABS warning light coming on.
Where is the speed sensor on a Subaru hub?
It’s exposed end extends out behind the bearing to capture pulses from an encoder ring on the back of the bearing. On the hubs for 2005-2014 Subaru Legacy and Outback applications, a speed sensor mounts into the knuckle. It’s exposed end extends out behind the bearing to capture pulses from an encoder ring on the back of the bearing.
What to look for when replacing wheel bearing hub?
In addition, during reassembly, any rust that’s present on the knuckle or backing plate may be dislodged and will adhere to the magnetic encoder ring of the new hub assembly. Also, check for any dirt, grease or metal particles on the tip of the sensor.
What causes an ABS light to come on after a hub replacement?
In many cases, replacing one hub bearing will cause the driver to feel ABS false activation when coming to a slow stop on dry pavement. Vehicle had wheel bearing hub replaced on one side.
How to reset ABS warning light Toyota Yaris 2 generation?
How to reset ABS warning light Toyota Yaris 2 generation. Reset ABS warning light Toyota Yaris second generation. From year: 2005, 2006, 2007, 2008, 2009, 2010, 2011. The light comes on when the ignition key is turned to the “ON” position. If the antilock brake system works properly, the light turns off after a few seconds.
When does the reset ABS warning light come on?
Reset ABS warning light Toyota Yaris second generation. From year: 2005, 2006, 2007, 2008, 2009, 2010, 2011. The light comes on when the ignition key is turned to the “ON” position. If the antilock brake system works properly, the light turns off after a few seconds. Thereafter, if the system malfunctions, the light comes on again.
What’s the sensor resistance on a Toyota Yaris?
I believe on a Mk 2 Yaris (mine is a 2010) and the sensor resistance is approx 6M ohms. On a Mk 1 (and early corolla) is around 1K to 2K ohms. I also have found that the easiest way to confirm if the harness from the sensor to the ECU is to measure the voltage on the connector pins to ground chassis.
Why does my abs light come on when I Turn on the car?
This is particularly important if the road is slippery or wet. There are different reasons for why the car ABS light would come on. The main reason is from simply turning on your vehicle. After you put your key in the ignition and turn it on, the computer does a test on the anti-lock braking system to ensure it is functioning normally.