CHECK ENGINE ON WITH CODE P0171. THE CODE HAS BEEN ON FOR OVER 6 MONTHS WITHOUT ANY CAUSE/REASON. I HAVE WORKED WITH LEXUS AND FOLLOWED RECOMMENDATIONS FROM LEXUS WITHOUT ANY SUCCESS OF RESOLVING IT. LEXUS TOOK A FUEL SAMPLE IN AUGUST 2010 AND I HAVE NOT RECEIVED ANY RESPONSES FROM LEXUS AS OF NOV. 15, 2010. SINCE THE "CHECK ENGINE" LIGHT HAS BEEN ON REGARDLESS SINCE FEB. 20, 2010, THE FUNCTION OF "CHECK ENGINE" LIGHT IS LOST. THIS IS A SAFETY HAZARD AS THE DRIVER WILL NO LONGER RECEIVE ANY WARNING OF ANY REAL POTENTIAL PROBLEM WITH THE VEHICLE. UPDATED 01/20/11 *BF THE CONSUMER WAS INFORMED THE OXYGEN SENSOR NEEDED TO REPLACED. HOWEVER, THE CHECK ENGINE LIGHT ILLUMINATED AGAIN. THE DEALER HAS BEEN UNABLE TO PINPOINT THE PROBLEM.
2004
SUSPENSION
THIS A 2004 LX470. IN MAY OF 2005 THE REAR SUSPENSION BECAME "LOCKED" IN A FULLY EXTENDED MODE. THE 2004 LX470 HAS AN ELECTRONICALLY CONTROLLED SUSPENSION THAT CAN CAUSE THE VEHICLE TO LOWER OR RAISE. APPARENTLY, THE REAR SUSPENSION WAS "LOCKED" IN THE RAISE POSITION WHILE THE FRONT SUSPENSION WAS IN THE LOWERED POSITION. THE VEHICLE WAS DANGEROUS TO DRIVE AND WAS SUBSEQUENTLY FLAT-BEDDED TO A DEALERSHIP FOR REPAIRS. AT THE DEALERSHIP THEY WERE NOT ABLE TO GET NEW REPLACEMENT PARTS (THEY SAID IT WAS BAD SENSORS ) BECAUSE THEY WERE ON BACK ORDER. AFTER ABOUT A MONTH OF DELAY, THE DEALERSHIP FINALLY USED SENSORS FROM A 2005 VEHICLE TO REPAIR MY VEHICLE. NOW, LESS THAN ONE YEAR LATER (AND LESS THAN 10,000 MILES LATER) ON FEB. 26TH OF 2006 THE SAME THING HAS OCCURRED YET AGAIN. THE REAR SUSPENSION IS "LOCKED" IN THE FULLY EXTENDED POSITION MAKING THE VEHICLE DANGEROUS TO DRIVE. I HAVE CONTACTED LEXUS WHO HAS SAID THEY WILL NEED TO INVESTIGATE THE ISSUE. HOPEFULLY THIS WILL BE REPAIRED PROPERLY THIS TIME AND NEVER OCCUR AGAIN. *JB