One problem related to brake antilock wheel speed sensor has been reported for the 2003 Toyota Highlander. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Toyota Highlander based on all problems reported for the 2003 Highlander.
Vsc (vehicle stability control, including abs) & check engine lights have been turning on intermittently almost from the start of our ownership of this 2003 Toyota Highlander v6 awd limited and after costly repairs at the dealer they are still on continuously. Last time (may-June 2010) dealer replaced front brake pads & rotors; rear axles and speed sensors and now wants to replace additional components that do not appear connected. First time car was serviced under warranty at dealer and that too did not last for long. Toyota car satisfaction center has not been helpfull. Case # [xxx]. Ford has issued a recall for similar issue recently: 10s13 for rear axle breakage in the snow belt! Toyota refuses to acknowledge issue and internet has many discussions on topic. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).