20 Most Recent 2001 Toyota 4Runner - Page 4 Questions & Answers

Check for codesTrac is part of abs braking systemCould be a bad wheel speed sensorCodes are used to find problems,notto tell you what to replace

When the computer detects certain faults it will set the check engine light on along with the other lights you've explained. I've seen this on many toyota SUV's. Usually the codes set are oxygen sensor related. There really is no relation between the oxygen sensors and the traction control system but for some reason it disables it and sets the warning lights on. Have the computer scanned for codes at a shop or at a parts store such as autozone for free.

make sure drain tube for ac condensation is not stopped up, usually comes thru firewall under hood, cant think of any other water inside of car. Heater core leak would be antifreeze.