2002 Toyota Sienna Electrical System

Dear Sir, On April 2026, I need to do the semiannual smog check. Right now, I face DTC P0420 error code and I can't pass the smog check inspection. Note that I don't have the engine light on indicating the a/m error code. Only my OBD2 shows the error DTC Code P0420. I did some searhing and noticed that the ECM for Sienna should be updated to erase the a/m DTC code. I would appreciated to help me how the resolve this issue ASAP. It will enable me to renew my registration.You may contact on my cell phone 747 217 7254 or my email at [email protected]. Regards, Massey

ALL THE LOCKS KEEP UNLOCKING, AND LOCKING WITHOUT ANYONE IN OR AROUND THE VEHICLE, BECAUSE LOCKS ARE LOCKING AND UNLOCKING IT IS CAUSING THE BATTERY TO DRAIN. THE DOORS LOCK AND UNLOCK WHILE VAN IS IN GEAR, WHILE DRIVING, AND WHEN VAN IS NOT RUNNING WITHOUT KEY IN IGNITION. I HAVE 2 CHILDREN AND BELIEVE THIS IS A SAFETY ISSUE! *TR

AUTOMATIC SLIDING DOOR SOMETIMES WILL NOT SHUT AND REQUIRES MULTIPLE, REPEATED PUSHING OF THE DRIVER'S SLIDING DOOR BUTTON UNTIL THE DOOR SHUTS. OFTEN TIMES, I WILL HAVE TO TURN OFF THE ENGINE AND CRANK THE ENGINE AGAIN AND THEN KEEP PUSHING THE DRIVER'S SLIDING DOOR BUTTON UNTIL (IF I AM LUCKY), THE AUTOMATIC SLIDING DOOR CLOSES. THIS PROCESS CAN TAKE 10 MINUTES OR LONGER DEPENDING ON HOW MUCH TIME I HAVE WHEN THIS PROBLEM OCCURS. SOMETIMES, I WILL TURN OFF THE ENGINE AND LEAVE THE DOOR OPEN FOR AN HOUR OR SO BEFORE CRANKING THE CAR AGAIN AND PUSHING THE BUTTON TO TRY TO CLOSE THE AUTOMATIC SLIDING DOOR. *TT

TL*THE CONTACT OWNS A 2002 TOYOTA SIENNA. WHILE DRIVING AT APPROXIMATELY 60 MPH ON A ROAD UNDERGOING CONSTRUCTION, THE TIRE PRESSURE INDICATOR LIGHT ILLUMINATED ON THE INSTRUMENT PANEL. THE CONTACT PULLED OVER AND TURNED OFF THE IGNITION. HE CHECKED ALL THE TIRES BUT COULD FIND NO PROBLEMS. A MONTH LATER, WHILE DRIVING ON THE SAME ROAD (NO CONSTRUCTION THIS TIME) AT APPROXIMATELY 60 MPH, THE TIRE PRESSURE INDICATOR LIGHT ILLUMINATED ON THE INSTRUMENT PANEL AGAIN. THE CONTACT INSPECTED THE TIRES AGAIN BUT FOUND NO CAUSE FOR THE LIGHT. THE VEHICLE HAD NOT BEEN INSPECTED AT THE TIME OF THE COMPLAINT. THE FAILURE MILEAGE WAS APPROXIMATELY 55,000. THE CURRENT MILEAGE WAS APPROXIMATELY 72,000.

2002 TOYOTA SIENNA VAN. THE VEHICLE COMPUTER WILL SPORADICALLY TRIGGER THE CHECK ENGINE LIGHT TO COME ON BASED ON NO ACTUAL CAUSE. THIS OCCURS AROUND EVERY 5,000 MILES. IT IS TYPICAL FOR THIS COMPUTER FAILURE TO BEGIN AFTER 75,000 MILES ON THIS YEAR OF SIENNA AND TOYOTA'S RECALL ONLY COVERS VEHICLES UP TO 75,000 MILES. THE COMPUTER COSTS $1,000 TO REPLACE. THIS RECALL SHOULD BE EXPANDED TO VEHICLES 10YRS OLD OR LESS. THERE IS PROBABLY AN INTERNAL MEMO FLOATING AROUND TOYOTA WITH A DOLLAR FIGURE ATTACHED BRANZELY BOASTING HOW MUCH THEY SAVED BY "SMOKING" A SHORTER RECALL PERIOD PAST THE US GOVERNMENT. TOYOTA CUSTOMER SERVICES HAS BEEN HOSTILE TOWARD RESOLVING THIS COMPLAINT. *TR

IN 2003, I WAS TOLD THE ECU UNIT NEEDED REPLACED ON PASSENGER SIDE REAR POWER SLIDING DOOR AS DOOR WOULD INTERMITTENTLY NOT OPEN OR CLOSE. HAS CONTINUED WITH INTERMITTENT PROBLEM UNTIL IT FINALLY WOULDN'T OPEN NOR CLOSE. GIVEN THE VERY HIGH VOLUME OF COMPLAINTS ABOUT THIS PROBLEM ON ALL YEARS OF THE TOYOTA SIENNA, I WOULD LIKE FOR THE ODI TO OPEN AN INVESTIGATION. ALL YOU HAVE TO DO IS GOOGLE "TOYOTA SIENNA POWER SLIDING DOOR PROBLEMS" AND YOU END UP WITH MULTIPLE THOUSANDS OF HITS, WITH MOST BEING CHAT SITES WITH MULTIPLE COMPLAINT THREADS. *TR

DT: THE CONTACT STATED THE FUSES KEPT BLOWING. THE VEHICLE WAS TAKEN TO AN INDEPENDENT REPAIR SHOP FOR DIAGNOSTIC TESTING. THEY WERE UNABLE TO DUPLICATE THE PROBLEM. THEN, THE CONTACT TOOK THE VEHICLE TO A LOCAL DEALERSHIP TWICE BEFORE THEY WERE ABLE TO LOCATE THE PROBLEM. THE DEALERSHIP FOUND THE WIRING HARNESS IN THE DASHBOARD MELTED, CAUSING THE FUSES TO BLOW OUT. NO REPAIRS HAVE BEEN MADE. *AK

CONSUMER WAS TRAVELING ABOUT 40MPH ON HIGHWAY COMMING FROM DEALERSHIP WITH A BRAND NEW VEHICLE. SMOKE WAS COMMING FROM ENGINE DEPARTMENT. THEN, THE FIAMES STARTED COMING FROM HOOD. VEHICLE BURNED DOWN TO THE GROUND AND WAS TOTALED. THERE WERE NO INJURIES. DEALERSHIP WAS AWARE OF PROBLERM.*AK

NO SUMMARY LISTED FOR ABOV EVEHICLE. *AK