I have a 2005 vitz (Yaris) which i just bought in a used condition. As preventive maintenance, I had the front wheel bearings checked / changed, and subsequently discovered an induced problem. The ABS light alongwith the handbrake light stays ON, as well as the speedometer is not working. I know that this has to do with the sensors removed and installed in each wheel hub, however, my attempt to reset these lights at one autostore with a scanner has failed. Can anyone help me with this problem, and how to get the speedo functioning again.
I have a similiar problem, i drive the exact same car (toyota vitz 2005) and the ABS light comes on and off soemtines dailiy, weekly or monthly...this has affected my speed as anytime ABS is on my speedometer wont move over 100km?can someone please assist.Over and above it makes a funny noise(almost like a bus with old brakes when coming to an abrupt stop) sometimes...my mechanic says theres a loose wire in my petrol tank that makes this noise(beacause my drum and pads are fine) but hes charging me an arm an a leg for it...so thought i should find out if this is indeeda problem that anyone has heard of!
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Re: vitz abs light
The most likely cause is that the wheel speed sensor wire got stretched during disassembly, and needs to be replaced not. If the wires arent disconnected from the hub, or strut during disassembly, they get pulled and yanked and the wires inside stretch to far, but you cant see it because the outside looks ok. Happens all the time.
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"Vehicle Speed Sensor Malfunction". That may be either related to the speedometer or related to the ABS, if your Yaris is equipped with ABS. It indicates that the car THINKS that it should be able to sense how fast the wheels are turning when you're in motion, but it's getting a strange signal from the sensor.
Since this is a Yaris with front-wheel drive, your speed sensors will be somewhere between the transaxle and the front wheels, probably one on each side. Look for some sort of small device mounted next to the axle shafts or next to the brakes - that device should have wiring connected to it. Check the little electrical connector, make sure it's plugged together correctly. The sensor itself may have failed, though, so be prepared to replace one or the other. if replacing one doesn't solve the problem, put the original one back and use the new one to replace the sensor on the other side of the car.
This is a condition known as over active ABS. GM has a technical service bulletin for this. Basically what it say is to remove the front wheel speed sensors from the hubs, clean the mating surface between the sensor and the hub, apply some di-electric grease over the cleaned area, and reinstall the sensor.
You can try this on the front sensors and see if the problem goes away. I will warn you that you need to be very careful removing the sensor from the hub as they can break off. If it breaks off in the hub you will need to replace the hub and bearing.
You can also check to see if one of the front wheel bearings is loose. with the tire off the ground grab the tire at the 12 and 6 position and push/pull. if the wheel moves and you can see the rotor moving also than the wheel bearing may be sloppy enough for internal exciter ring to get an excessive gap from the abs sensor.
The easiest thing to do is look at wheel speed data on a higher end scan tool. When the symptom happens you will see the wheel speed drop out. Whatever wheel drops out is the wheel that needs to be checked.
check your front wheel bearings by jacking up the front end of your vehicle and trying to wiggle the tire at the top and bottom of the tire. If the tire seems to be jiggling a little bit at the hub; not the suspension or steering, your wheel bearing needs to be replaced. If it gets really bad you can actually see the wheel inverted or the top of the tire leaning towards the inside from the front of the vehicle.
when your wheel bearings go the sensor in the bearing goes off and the abs light comes on.
this is a common first sign of your antilock brake computer failing. You will most likely never feel a difference in your car but there is a slight chance all your safety features will not operate properly in a collision.
as a toyota technician, its probably the wrong fitted of the ring, once you replace the bearing they will removed the ring and in that ring there is a small hole that the sensor goes in. speedometer will not work not work if there is a malfunction in abs and it is speedometer,brake warning light are integrated with abs ecu.