texastuit 
2011 Toyota Sienna Minivan XLE 8-Passenger 4dr Minivan (3.5L 6cyl 6A)
Sienna Cruise Control Problem
 We've had our Sienna for almost a year now and thoroughly enjoy driving it. The pick up and turning radius are great. I have only two complaints.....Our LXE has everything but the DV D package and YET....No automatic headlights. The dash lights come on automatically but NOT the headlights....go figure. More annoyingly, when decending even a SLIGHT grade, the cruise control can not keep the set speed within 10-15 MPH. Took it in for check out and was told to read the owners manual...No other vehicle I own or have owned seems to have this problem. Granted, they may gain a few MPH, but will hold the speed much closer than this. Look out speeding ticket!