ABS Light just came on on 2000 Volkswagen Jetta TDI

We've had a tremendous amount of rain here and no end in sigh for the next week, could rain be most likely the cause for this?

Asked by for the 2000 Volkswagen Jetta TDI
Yes, corrosion from all the moisture could be a factor, but realize as long as this light is on, you have NO ABS, so the car will skid on wet surfaces,.
Best to get this checked out.
Thanks I will right away. Chef Cindy