The earlier ABS units (non-linked system) seem to be more susceptible to failure due to poor maintenance. Mine did that 9 years ago and there are similar reports from time to time.
Here's a fix. I am the seller and have sent a couple to USA in the past. Contact me by PM if interested.
https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2540003.m570.l1313&_nkw=115485561972&_sacat=0