Toyota FJ Cruiser 2015 Automatic Gasoline mileage: 300 KM or more 4WD Peace be upon you. Brothers, I have a question regarding the problem of the APS light and the brakes not holding. I fixed this problem and installed a dynamo from the scrapyard, and after 4 months the same problem returned. Would installing a complete new brake booster set get rid of this problem? May God reward you with good.