Problems · by component

2000 Toyota Sienna engine and engine cooling problems

70 owner complaints to NHTSA about the 2000 Toyota Sienna cite engine and engine cooling, 19% of all 374 complaints for this model year.

Complaints
70
19% of all complaints
Crashes
0
Reported by owners
Fires
1
Reported by owners
Injuries
5
Reported by owners
01 —Owner reports

What owners say about the engine and engine cooling

Verbatim from NHTSA complaints, newest first
“TL* THE CONTACT OWNS A 2000 TOYOTA SIENNA. THE CONTACT STATED WHILE DRIVING 55 MPH WITH THE BRAKES APPLIED THE VEHICLE WOULD NOT STOP. THE CONTACT DROVE ONTO THE EMERGENCY LANE AND THE VEHICLE TOWED TO THE DEALER. THE DEALER DIAGNOSED THE FAILURE AND DISCOVERED THAT THE ENGINE MOUNTS WERE BROKEN. THE CONTACT TOOK THE VEHICLE TO A DIFFERENT DEALER FOR A SECOND DIAGNOSTIC TEST WHO DID NOT STATE WHAT CAUSED THE FAILURE TO OCCUR. THE CONTACT STATED THE VEHICLE WAS UNSAFE TO DRIVE AND COULD HAVE CAUSED A CRASH. THE FAILURE MILEAGE WAS 219,000.”
Owner complaint to NHTSAFiled Jun 22, 2011Engine and engine coolingODI 10408475
“I OWN A 2000 TOYOTA SIENNA WHICH I HAVE HAD FOR ONE YEAR. TO DATE, I HAVE PAID TO REPAIR THE REAR SEAT, AS ONCE IT WAS TAKEN OUT, THE MECHANISM BROKE AND IT COULD NOT BE PUT BACK IN THE CAR. ALSO, WE HAVE REPLACED THE DRIVERS SIDE SEAT BELT (THE WHOLE THING) BECAUSE THE SEAT BELT LIGHT WOULD CONSTANTLY BLINK. NOW THE PASSENGER SIDE SEAT BELT LIGHT BLINKS WHEN THE SEAT BELT IS LATCHED AND WHEN NOBODY IS SITTING THERE. THE POWER SLIDING DOOR HAS BEEN LOOKED AT AND REPAIRED THREE DIFFERENT TIMES. IT CONTINUES TO OPEN, BUT WILL NEVER CLOSE ALL THE WAY. BOTH THE DRIVERS SIDE AND PASSENGERS SIDE POWER WINDOWS WILL NOT ROLL DOWN (OR IF THEY DO, THEY WILL NOT GO BACK UP). THERE IS A BANGING SOUND COMING FROM THE MIDDLE FLOOR BOARD BY THE GAS PEDAL. THE TRANSMISSION HAS BEEN REPLACED. FINALLY, THE REAR DOOR LATCH BROKE COMPLETELY AND THERE IS NO WAY TO OPEN THE REAR DOOR - FROM THE INSIDE OR OUT. ALL OF THIS IS WITH NORMAL WEAR. *TR”
Owner complaint to NHTSAFiled Oct 12, 2010Engine and engine cooling, Electrical system, Visibility, Seat belts, Latches/locks/linkages, SeatsODI 10360038
“THE CONTACT OWNS A 2000 TOYOTA SIENNA. THE CONTACT STATED THAT THE VEHICLE WAS TAKEN TO THE DEALER FOR DIAGNOSTIC AND TESTING. THE DEALER ADVISED THAT THE VEHICLE CONVERTER FOR THE EXHAUST SYSTEM NEEDED TO BE REPLACED AT THE OWNERS EXPENSE. THE DEALER ADVISED THAT THE CONVERTER FOR THE EXHAUST SYSTEM CAN ONLY BE REPLACED IN CALIFORNIA. THE VEHICLE WAS NOT REPAIRED AND THE CONTACT DOES NOT FEEL LIKE TRAVELING FROM FLORIDA TO CALIFORNIA. THE CONTACT STATED THAT HE HAS LOWER FUEL MILEAGE AS A RESULT OF THE EXHAUST SYSTEM DEFECT. THE APPROXIMATE FAILURE MILEAGE WAS 90,000. THE APPROXIMATE CURRENT MILEAGE WAS 112,000. RG”
Owner complaint to NHTSAFiled Apr 27, 2010Engine and engine coolingODI 10327722
“NOTICED CHECK ENGINE LIGHT ON AND SMOKE ON COLD START UP. CALLED LOCAL TOYOTA DEALER AND WAS TOLD THIS WOULD BE A MAJOR "FIX" AND WOULD COST AT LEAST $3,000.00 TO REPAIR. AFTER DOING A GOOGLE SEARCH I REALIZED MY SIENNA MOST LIKELY HAD OIL GEL AND CALLED TMSUSA IN CALIFORNIA TO REPORT IT. WAS TOLD TO TAKE VAN TO A LOCAL DEALER AND HAVE DIAGNOSED. TOOK IT IN THE VERY NEXT DAY AND OIL GEL WAS CONFIRMED (IN WRITING). WAS THEN TOLD THAT THE VAN WAS 90 DAYS PAST COVERAGE AND IT WOULD COST $6,200.00 FOR A NEW ENGINE. I TRIED TO SHOW DOCUMENTS OF MY OIL CHANGES AND SERVICE MANAGER SAID IT WOULD DO NO GOOD. I REFUSE TO DRIVE THIS VAN FOR FEAR THAT THE ENGINE WILL SEIZE! I AM REQUESTING THAT A SECOND INVESTIGATION BE MADE INTO THESE VEHICLES. THE CLASS ACTION LAWSUIT DID NO GOOD FOR THE TOYOTA CONSUMERS! ALSO, FOR THE RECORD, I TOOK THE VAN IN WHEN THE ENGINE LIGHT FIRST CAME ON (ENGINE WAS NOT SMOKING YET) AND THE DEALER TOLD ME IT WAS PROBABLY JUST THE GAS CAP AND THAT THE ENGINE LIGHT COMES ON IN THESE VEHICLES ALL THE TIME. THEY NEVER DOCUMENTED MY VISITS TO THE SERVICE DEPARTMENT. I WOULD HAVE BEEN WITHIN THE 8 YEAR TIME FRAME IF THEY WOULD HAVE CHECKED THE ENGINE AT THAT TIME! *TR”
Owner complaint to NHTSAFiled Feb 22, 2010Engine and engine coolingODI 10312727
“2000 TOYOTA SIENNA HAS AN ON/OFF ENGINE LIGHT PROBLEM. *NJ CONSUMER IS ADDING INFORMATION. *NJ 7/24/09 THE CONSUMER WAS TOLD THE IGNITION COIL NEEDED TO BE REPLACED, BUT AFTER IT WAS REPLACED, THE ENGINE LIGHT CAME BACK ON. THE SPARK PLUGS AND WIRES WERE CHANGED BUT TO NO AVAIL. THE CONSUMER STATED THE VEHICLE RUNS POORLY AND IT ALSO STALLS. THE CONSUMER DISCOVERED A WEBSITE WHERE OTHER YEARS OF THE TOYOTA SIENNA WERE RECALLED FOR THE SAME PROBLEM. RECALL 98E035000. *JB”
Owner complaint to NHTSAFiled Jul 27, 2009Engine and engine cooling, Electrical systemODI 10276608
“CHECK ENGINE LIGHT HAS COME ON FOR MONTHS AND WAS TOLD THAT IT WAS AN O2 SENSOR AND NOT A SEVERE PROBLEM, JUST WON'T GET AS GOOD GAS MILEAGE. VEHICLE NOW SMOKES UPON START UP AND IS LOSING TOO MUCH OIL TOO QUICKLY. TOYOTA SAID TO TAKE VEHICLE TO A TOYOTA DEALER AND HAVE THEM DIAGNOSE THE PROBLEM. CAME BACK THAT THE ENGINE HAD "GEL" AND WOULD COST $2700.00 TO CLEAN AND REPAIR. TOYOTA DISTRICT SERVICE MANAGER DENIED THE CLAIM. SAID WARRANTY ONLY GOOD FOR 8 YEARS FROM DATE VEHICLE WAS PURCHASED. NOW WAITING TO HEAR FROM CASE MANAGER TO SEE IF SHE WILL O.K. THE REPAIRS TO BE PAID FOR BY TOYOTA. WE BOUGHT THE SIENNA USED IN 2004 AFTER THE TSB WAS ALREADY ESTABLISHED BUT WERE NOT MADE AWARE OF THIS "GELLING" PROBLEM. JUST HAD OIL CHANGED IN NOVEMBER 2008 AND NOW THE OIL LEVEL IS BARELY REGISTERING ON THE STICK. ONLY 6 WEEKS AFTER THE LAST OIL CHANGE!!! CAR IS STILL AT THE TOYOTA DEALERSHIP. *TR”
Owner complaint to NHTSAFiled Jan 9, 2009Engine and engine coolingODI 10254406

Showing 6 of 70 reports. Read every report on NHTSA.gov.

Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 11, 2026NHTSA vehicle page

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.