2007 Toyota Sienna power train problems

“The contact owns a 2007 Toyota Sienna. While the contact’s wife was pulling into the parking space, the transmission shifter was shifted into park(P), and the vehicle suddenly rolled forward approximately four feet. The parking brake was activated, preventing the vehicle from crashing into a parked vehicle. The vehicle was towed to the residence. While examining the vehicle, the contact determined that the shifter cable bushing had failed and needed to be replaced. The vehicle was not yet repaired. The manufacturer and local dealer were notified of the failure. Additionally, previously while driving there was smoke coming from the engine compartment and the vehicle stalled. The vehicle was towed to the local mechanic who diagnosed the vehicle and determined that the oil cooler line had failed causing engine oil to spill from the engine. The rubber oil cooler line was replaced with an updated improved oil cooler line, and the vehicle was repaired. The failure mileage was 170,000.”

“As a result of the transmission cooler being a part of the radiator system, the transmission cooler ruptured while driving causing immediate loss of power and the engine to overheat. This malfunction also caused coolant and transmission oil to contaminate the engine compartment as well as the transmission. This is a major iengineering flaw and safety issue as I was on the interstate when it happened and was stranded on the side of the highway until help could be obtained.”

“TL* THE CONTACT OWNS A 2007 TOYOTA SIENNA. THE CONTACT STATED WHILE STOPPED AT TRAFFIC LIGHT, THE VEHICLE STALLED WITH THE BRAKE PEDAL DEPRESSED. SEVERAL WARNING LIGHTS ILLUMINATED ON THE INSTRUMENT PANEL. THE CONTACT SHIFTED THE VEHICLE INTO NEUTRAL AND COASTED INTO A DRIVEWAY. UPON INSPECTION, THE CONTACT DISCOVERED THAT THERE WAS NO OIL IN THE ENGINE. THE CONTACT REFILLED THE OIL HOWEVER, THE OIL IMMEDIATELY LEAKED OUT THE VEHICLE. A MECHANIC ARRIVED ON SCENE AND REPLACED AN OIL HOSE. AFTER THE HOSE WAS REPLACED, THE CONTACT HEARD AN ABNORMAL KNOCKING NOISE IN THE ENGINE. THE CONTACT TOOK THE VEHICLE TO SEVERAL INDEPENDENT MECHANICS AND WAS INFORMED THAT THE ENGINE FAILED AND NEEDED TO BE REPLACED. THE CONTACT HAD THE VEHICLE TOWED TO SUBURBAN TOYOTA OF FARMINGTON HILLS (25000 HAGGERTY RD, FARMINGTON HILLS, MI 48335) WHO CONFIRMED THERE WAS AN ENGINE FAILURE. THE CONTACT THEN HAD THE VEHICLE TOWED TO AN INDEPENDENT MECHANIC WHERE THE ENGINE WAS REPLACED. AFTER THE ENGINE REPLACEMENT, THE CONTACT EXPERIENCED SEVERAL TRANSMISSION ISSUES. THE CONTACT STATED THAT WHILE AT A STOP, THE VEHICLE INDEPENDENTLY SHIFTED IN AND OUT OF GEAR WITHOUT WARNING. ALSO, WHILE…”

“DRIVING 55MPH ON FRWY, VAN STARTED SMOKING IN THE REAR AND OIL ON BACK OF VAN. SLOWLY DROVE SHORT DISTANCE HOME AND LIGHTS ON DASH CAME ON UPON ARRIVING HOME. OIL LEAKED ON STREET WHERE WE PARKED. HAD MOBILE MECHANIC LOOK AT IT. OIL COOLER HOSE HAD BURST. HE REPLACED IT, WE DROVE THE VAN 50 MILES ON SHORT TRIPS.WHEN ON FRWY, IT HAPPENED AGAIN ABOUT 3 WKS LATER. HAD TOWED HOME. SAME HOSE BUSTED AGAIN. LOOKED ON INTERNET SITES & FOUND SAME PROBLEM HAS OCCURRED TO MANY PEOPLE WITH SAME VAN YEAR. LONGTERM ONGOING PROBLEM. CALLED TEJAS TOYOTA IN HUMBLE, TX AND SVC MGR SAID TOYOTA OFFERED AN EXTENDED WARRANTY (KNEW THERE WAS A PROBLEM), BUT IT ENDED AT 100,000 MILES/10YRS (WE HAVE 120, 900) AND IS 2007 VAN. WE'VE ALREADY HAD IT TOWED AND FIXED TWICE. WE'RE RECOVERING FROM NEAR DEATH/COVID AFRAID TO DRIVE IT SINCE WE CAN'T TRUST IT. BASED ON INTERNET STORIES BY OTHERS WITH SAME PROBLEM, & SVC MGR AT TOYOTA OPINION, FEAR IS WARRANTED. OUR VAN WAS REPAIRED 2X W/ SAME TYPE OF INFERIOR HOSE PUT ON VAN WHEN BUILT BY A MECHANIC NOT AT TOYOTA. NONE OF US REALIZED INFERIOR PART WAS THE PROBLEM.NOW WE NEED TO REPAIR IT AGAIN WITH A "KIT" THAT TOYOTA SPECIFICALLY MADE BECAUSE…”

“TL* THE CONTACT OWNS A 2007 TOYOTA SIENNA. WHILE DRIVING AT AN UNKNOWN SPEED, THE VEHICLE BEGAN TO JERK AND THE TRANSMISSION HESITATED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE TRANSMISSION FAILED. THE DEALER WAS NOT CONTACTED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND STATED THAT THE VEHICLE WAS OUT OF WARRANTY. THE FAILURE MILEAGE WAS 53,000.”

“AT MY 120,000 SERVICE, THE TOYOTA DEALER TECHNICIAN REPORTED A LEAKING FRONT DIFFERENTIAL. HE SAID IT WOULD TAKE 16 HOURS TO REPAIR. THE TECHNICIAN ALSO MENTIONED THAT HE HAD 3 TOYOTA CARS CURRENTLY IN THE SHOP FOR THE SAME THING. THIS SEEMS BEYOND COINCIDENTAL. CLEARLY, TOYOTA HAS A PROBLEM WITH LEAKING SEALS. THE DIFFICULTY TO FIX THIS PROBLEM TRANSLATED INTO A BILL OF $1,404.60 PLUS $31.79 FOR A RENTAL CAR. THE BILL MAY HAVE BEEN MORE: THE CAR'S RACK AND PINION WAS ALSO LEAKING, SO SOME OF THE LABOR WAS SHARED WITH THAT JOB. THIS AMOUNT SEEMS EXTREME AND EITHER TOYOTA HAS FAULTY SEALS OR, IF THIS IS A "NORMAL" WEAR AND TEAR ITEM AT 120,000 MILES, TOYOTA HAS MADE IT WAY TOO DIFFICULT TO FIX. EITHER WAY, THIS AMOUNT OF EXPENSE IS INORDINATE.”