FixVault

Cruise Control System

WARNING: This page is about a different car, the 2009 Lexus IS 350 and 2009 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.
CRUISE CONTROL SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION

DTC Code Description
P0500 Vehicle Speed Sensor Malfunction
P0503 Vehicle Speed Sensor "A" Intermittent / Erratic / High
P0571 Brake Switch "A" Circuit
P0607 Input Signal Circuit Malfunction