1999 Toyota Sienna Electrical Problems

Your horn stops working and then starts working again without any pattern. You took your vehicle to the dealer, but the technician couldn't figure out what's causing the problem. The issue started around 150,000 miles and is still happening. Fixing this will likely involve testing the horn circuit, checking the horn relay, and possibly replacing the horn switch or horn assembly.

I AM THE FIRST OWNER OF THE 1999 TOYOTA SIENNA LE WITH WHICH HAS ONLY 61,000 MILES SO FAR. HOWEVER, IN THE EVENING OF TWO DAYS AGO, I STARTED IT AND COULDN'T STOP IT ANYMORE. IT KEPT RUNNING EVEN I TOOK THE KEY OUT. I WAS SO AFRAID OF CAUSING FIRE EVENTUALLY, BUT I STILL HAD TO DRIVE AROUND TRYING TO STOP IT. EVENTUALLY I SMELT SOMETHING BURNING AND I WAS ABLE TO STOP IT FROM RUNNING. THE CAR WAS TOWED TO TOYOTA DEALER IN DUBLIN, CA TO HAVE THE STARTER REPLACED. THIS IS SCARY PROBLEM FOR THE CAR I BOUGHT IN THE BELIEF OF SAFETY AND RELIABILITY. *TR

ELECTRICAL PROBLEM WITH FUSE #12 WHICH CONTROLS THE INTERIOR LIGHTS, CLOCK, AND REMOTE ACCESS-KEEPS BLOWING. ALSO THE DRIVER'S SEAT BELT WARNING LIGHT CONSTANTLY FLASHES EVEN WHEN THE BELT IS LATCHED. DRIVER'S VANITY LIGHT HAS DISLODGED FROM VISOR. *NM

DT*: THE CONTACT STATED WHILE DRIVING 35 MPH ON A RAINY DAY ON FLAT ROAD CONDITIONS, THE VEHICLE LOST ALL BACK LIGHTS. THE RAIN WATER CREATED A SHORT CIRCUIT ON THE VEHICLE HARNESS CABLES IN THE HITCHER. THE CABLE HARNESS WAS REQUIRED TO CONNECT THE TRAILER LIGHTS. THE CONTACT DISCONNECTED THE HARNESS CABLES TO RESTORE THE VEHICLE BACK LIGHTS. THE MANUFACTURER WAS CONTACTED WHO REFERRED THE CONTACT TO A DEALERSHIP.

POWER DOOR LOCKS HAVE STARTED TO FAIL ON MY 1999 SIENNA LE. THE DRIVER'S DOOR SEEMS TO BE THE PROBLEMATIC PART OF THE SYSTEM. THE OTHER DOORS SEEM TO WANT TO RESPOND BUT DRIVER DOOR MAKES A 'CLICK, CLICK, CLICK' SOUND AND DOESN'T RESPOND. KEY USUALLY WORKS TO LOCK AND UNLOCK BUT NOT CONSISTENTLY. DANGEROUS SINCE PEOPLE COULD BE TRAPPED IN VEHICLE DURING AN ACCIDENT, ETC AND OTHER POSSIBLY DANGEROUS SCENARIOS COULD OCCUR. REPORTING THIS SINCE IT MOST LIKELY HAS HAPPENED TO OTHERS AND WANTED IT ON RECORD. DRIVER AND OTHERS COULD BE TRAPPED INSIDE WHICH IS DANGEROUS. *JB

MY LATE 1999 TOYOTA ECHO WAS PARKED AFTER A SHORT DRIVE. TWO AND A HALF HOURS LATER IT BURST INTO FLAMES. THE CAR WAS COMPLETELY DESTROYED AND A LARGE AREA OF MY HOME WAS BURNED. I AND MY NIECE WERE ASLEEP UPSTAIRS. NO ONE WAS INJURED. THE SMELL OF SMOKE WOKE US. WHEN WE FIRST SAW THE CAR, A COLUMN OF WHITE FIRE WAS SHOOTING UP THROUGH THE WINDSCREEN TO THE CEILING 11 FEET ABOVE. THE FIRE CAME FROM THE CENTER OF THE CONSOLE/DASH AREA. AT THAT TIME THERE WERE NO FLAMES AROUND OR UNDER THE CAR. JUST THE COLUMN OF FLAME FROM THE CENTER. THE HORN WAS SOUNDING. THE FIRE DEPARTMENT AND POLICE ARRIVED WITHIN 10 MINUTES AND CONFIRMED THAT THE FIRE WAS SEATED IN THE CENTRAL DASH AREA. THE KEYS WERE BESIDE BY BED. THE CAR HAD ONLY BEEN SERVICED BY TOYOTA SERVICE CENTERS AND THERE WERE NO MODIFICATIONS TO THE CAR. WHEN TOYOTA WERE NOTIFIED, THEY SENT INVESTIGATORS TO LOOK FOR A RELAY NEAR THE ALTERNATOR. THE RESULTS OF MY INSURANCE', TOYOTA'S AND AN INDEPENDENT INVESTIGATOR'S INVESTIGATIONS WERE (AS RELAYED TO ME BY PHONE) UNSPECIFIED FIRE STARTING IN THE DASH. *JB

98E035000 THE HORN DOES NOT WORK. THE ALARM GOES OFF WITHOUT REASON. THE CAR WILL NOT START ONCE THE ALARM GOES OFF WITHOUT REASON

I WAS DRIVING DOWN THE ROAD WHEN MY VAN CUT OFF AND WOULD NOT START BACK. I COASTED INTO A DRIVEWAY AND SMOKE BEGAN COMING FROM UNDER MY HOOD. I GOT OUT OF MY VAN TO CALL MY HUSBAND. BY THE TIME I HAD HUNG UP THE PHONE, THERE WAS BLACK SMOKE POURING FROM OUT UNDER THE HOOD AND IT SUDDENLY CAUGHT ON FIRE. I IMMEDIATELY CALLED 911, AND THE FIRE DEPARTMENT CAME WITHIN 5 MINUTES. MY VAN WAS A TOTAL LOSS. MY VAN WAS FINE WHEN I LEFT ON THIS SHORT TRIP, BUT THEN WITHIN 10 MINUTES, IT WAS DESTROYED. WE DO NOT KNOW WHAT CAUSED THIS FIRE.*AK

BATTERY WENT DEAD SUDDENLY. AFTERWARDS THE DOME FUSE WOULD BLOW INTERMITTENTLY. THIS KNOCKS OUT ALL INTERIOR LIGHTS AND THE DOOR LOCK CONTROL WILL NOT WORK UNLESS THE IGNITION IS ON. IT APPEARS THAT THE $250 INTEGRATION RELAY WAS SHORTED BY THE BATTERY FAILURE. *JB

POWER SLIDING DOOR NOT LATCHING PROPERLY; WARNING LITE ON; ECU SHORT CIRCUITED; CANNOT VERIFY IF RIGHT SLIDING DOOR IS CLOSED SHUT; EXACT PROBLEM ON SAME VEHICLE TAKEN FROM CARSON TOYOTA IN FEBRUARY; OTHER VEHICLE'S VIN NR IS [XXX]. *AK INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR