Hangman said:
You should get it diagnosed, aand likely repaired. I had an ABS sensor get damaged by snow/ice, and the light came on. So I got it looked at, and they said it was a damaged sensor, $200. The system needs all its components working to function properly. They didn't build it with extra shit you don't need.
Maybe some of these guys are more expert than me, but it seems to me that if there's a problem with your BRAKES, you should FIX them.
Especially ABS, in the winter.
He is correct, but prices vary on many vehicle for many ABS parts. As the sensor could be build into wheel bearing assembly. So the sensor could be bad but the wheel beariing works great, and there is not option to replace one, you have to replace the whole part and that is not cheap.
You may just have a blow relay or the wheel sensor has crapped out. First take it to the do-it-yourself car wash when the roads are semi clear. Make sure you give you're wheels and underbody of you're car a good wash down. I've seen snow and ice build up in weird places before, also as we all know salt is not a good thing when it comes in contact with metal.
Just a word to be cautious.
When that light appears, in some cars it will not effect the abs systems completely but in others cars you will still have brakes function but the ABS part of it will be deactivated. So when you are driving and you may have to brake hard, be careful otherwise you're wheels will lock up. Just a word of wise with the weather we have had in the last few days. No need to have a bad holiday season.
Although I prefer not having abs during the winter months as I have a little more control of the braking, but other people like the abs in winter, but that is a totally different topic.