Three problems related to vehicle speed control have been reported for the 2018 Toyota Sienna. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2018 Toyota Sienna based on all problems reported for the 2018 Sienna.
I had torque converter clutch pressure control solenoid control circuit and when I rich 85 speed the car check and my friend have the same car sam model he had the same issue.
I was turning left on country road at 25mph the car decelerate and yellow warning came on the dealer said the car thought it was going to roll over they did the soft ware up date the car still decalrate yellow light come on most of time when starting up.
The van struggles to accelerate. There is no way to turn off eco mode. No button is available. Van struggles to go up hills , excelerate thru intersections and always hunting for gears or stuck in a gear and sounds and acts very heavy on power train end. There is an option to turn off eco light. Turning off eco light does nothing but hide the problem. We need an option to complete disable eco mode with update or with a button.
| Vehicle Speed Control problems | |
| Speed Control Springs problems | |
| Car Accelerates On Its Own problems |