2015 Toyota Sienna Transmission Problems
5 owner-reported transmission complaints from NHTSA data
Data sourced from NHTSA public database. For informational purposes only. Always consult a qualified mechanic.
Owner Complaints (5)
Your van unexpectedly rolled out of park while parked, striking a fire truck in a parking lot. Your husband was not in the vehicle at the time. The incident caused damage to the front fender, hood, and surrounding area. This may indicate a problem with the transmission's park hold mechanism that should be inspected by a Toyota dealer.
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MY SIENNA VAN SOMETIMES RESPONDS VERY LATE TO ACCELERATION. THIS BECOMES A PROBLEM ON HIGHWAYS SPECIFICALLY DURING THE MERGING. ACCELERATION PADDLE HAS TO BE PRESSED VERY HARD, FOR FIRST FEW SECONDS THERE IS NO RESPONSE FROM ENGINE THEN LATTER IT SUDDENLY ACCELERATES. THIS MAKES YOU MISS JUDGE THE TIME REQUIRED TO MERGE ON HIGHWAYS AND CAN CAUSE ACCIDENTS. THIS HAS BEEN HAPPENING SINCE FEW MONTHS. I AM PROVIDING TENTATIVE DATE BELOW.
TL* THE CONTACT OWNS A 2015 TOYOTA SIENNA. AFTER THE CONTACT PLACED THE GEAR IN PARK, SHE COULD NOT SHIFT OUT OF THE PARK POSITION. THE CONTACT SHUT OFF THE VEHICLE AND IT WOULD NOT RESTART. IN ADDITION, THE BRAKE OVERRIDE MALFUNCTION INDICATOR ILLUMINATED AND "VISIT YOUR DEALER" APPEARED ON THE INSTRUMENT PANEL. THE VEHICLE WAS TOWED TO POWAY TOYOTA (13631 POWAY RD, POWAY, CA 92064, (858) 486-2900) TO BE DIAGNOSED, BUT THE RESULTS WERE PENDING. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 72,043.
WHEN AMBIENT TEMP IS BELOW FREEZING AND VEHICLE IS COLD THE ENGINE REVS UP FROM BELOW 1000 RPM TO NEARLY 1500 RPM WHEN COMING TO A STOP AND THE VEHICLE WANTS TO LURCH FORWARD. I MUST BE ON THE BRAKE TO PREVENT LURCHING FORWARD. IT REVS UP AS THE TRANSMISSION IS DOWNSHIFTING. DEALER SAYS IT IS NORMAL. THIS IS NONSENSE.
TL* THE CONTACT OWNS A 2015 TOYOTA SIENNA. THE CONTACT STATED THAT THE VEHICLE WAS NOT DRIVING NORMALLY AND IT FELT AS IF THE TRANSMISSION WERE FAILING. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE TRANSMISSION FAILED DUE TO A MINOR CRASH IN WHICH THE CONTACT WAS INVOLVED. THE TRANSMISSION WOULD NEED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS INFORMED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 7,000. THE VIN WAS NOT AVAILABLE.