Problems · by component
2005 Toyota Sienna electrical system problems
65 owner complaints to NHTSA about the 2005 Toyota Sienna cite electrical system, 6% of all 1,130 complaints for this model year.
Complaints
65
6% of all complaints
Crashes
0
Reported by owners
Fires
0
Reported by owners
Injuries
1
Reported by owners
What owners say about the electrical system
Verbatim from NHTSA complaints, newest first
“Stability light comes on, decelerates independently, vehicle shakes and steering is somewhat compromised. This has happened rounding curves between 40-50 MPH. Has happened twice on straight road, 8/24 and 8/25/2021, traveling at 70MPH, vehicle decelerated 2-5 miles independently. I put signal on and did smooth lane change to the right to get out of fast lane, and stability light came on, vehicle shook and steering was somewhat compromised. Neither local mechanic or dealership can retrieve any codes with diagnostic equipment. Dealership told me today the light has to stay on for them to retrieve code. This has happened irregularly over the last 6-8 months but always on curves. It has occurred 4 times in 6 days last week, twice on curves, 8/23 & 8/28/2021, and the 2 lane changes above. I am concerned with the increased frequency. There is a great deal of information on the web at https://www.siennachat.com/threads/traction-control-malfunctioning.44474/ so this is not an unknown issue.”
“I was pulling in my driveway when this incident happened. When exiting my vehicle and opening the driver side door this is what occurred. The driver side sliding door cable snapped and could have potentially hit the driver or me and which could have injured a body part especially the eye or hand. It also made a loud popping noise. There was no warning lights that this would happen and now the door will not open which causes a safety hazard because in case of an emergency this door may need to be opened to escape for safety reasons. Thank you for the investigation of this matter.”
“BRAKES ABS NOT WORKING. CAN'T FIND OUT WHY. SOMETIMES I HAVE BRAKES, SOMETIMES I DON'T. LIGHRS COME ON AND OFF. LOOKED UP RECALLS DESCRIPTIONS SHOW TGE SAME RECALLED ISSUES BUT MY CAR HAS ZERO RECALLS. DRIVING IN TRAFFIC ,BRAKE PEDAL GOES TO THE FLOOR. NO BRAKES. I GOT OUT OF TRAFFIC AND PARKED CAR IN DRIVEWAY. PEBDEMIC CAME. NOW I NEED TO FIND A WAY TO FIX IT.”
“TL* THE CONTACT OWNS A 2005 TOYOTA SIENNA. THE CONTACT STATED THAT THE VEHICLE POWER SLIDING DOOR INDEPENDENTLY WOULD OPEN AND CLOSE. IN ADDITION, THE CONTACT ALSO STATED THAT THE POWER SLIDING DOOR WAS NOT PROPERLY SECURED, A BEEPING NOISE OCCURRED, THE VEHICLE WAS UNABLE TO DRIVE. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE A DIAGNOSTIC TESTING WAS COMPLETED. THE CONTACT WAS NOT DISCLOSURED OF THE RESULT OF THE DIAGNOSTIC BUT WAS INFORMED THAT PARTS NEEDED TO BE ORDERED FOR THE REPAIR OF THE POWER SLIDING DOOR. THE VEHICLE WAS NOT REPAIRED AND WAS NOT TAKEN TO A DEALER. THE CONTACT MENTIONED THAT WHEN IT GETS COLD THE FAILURE OCCURRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 180,000.”
“REAR PASSENGER POWER SLIDING DOOR. PROBLEM STARTED WITH ONLY BEING ABLE TO OPEN FROM THE OUTSIDE. NOW WE CANNOT OPEN FROM THE INSIDE OR OUTSIDE WITH POWER OR MANUAL MODE. WE HAVE CHILDREN AND FEEL THIS IS A SEVERE SAFETY ISSUE. FROM WHAT I'VE BEEN RESEARCHING THERE WAS AN EXTENDED WARRANTY FOR THIS BUT OURS IS OUT OF THIS RANGE. APPARENTLY THIS IS A PROBLEM WITH A NUMBER OF TOYOTA MINIVANS. APPARENTLY THERE'S A CABLE ISSUE INVOLVED. WE DON'T FEEL SAFE WITH OUR CHILDREN IN THE CAR”
“PROBLEMS WITH HEAT ACTUATORS / BLEND DOOR RELAYS , ELECTRONICS ,FOUND MANY COMPLAINTS ON LINE THIS ISSUSE ALSO EFFECTS OTHER TOYOTA MODELS , SAFETY HAZARD AS CANNOT GET HOT AIR TO DEFROST ALSO ,HEAT ONE SIDE COLD OTHER SIDE ,IT CHANGES SIDES , BUT HARD TO DEFORST ALSO . DOES WHAT IT FEELS LIKE”
Showing 6 of 65 reports. Read every report on NHTSA.gov.
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 10, 2026NHTSA vehicle page
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.