Electrical systemPart report

2015 Toyota Sienna Electrical system Problems

Complaints: 44about this part
Share: 19%of 233 total for the year
Median mileage: 19,000miles
Trend: FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.

NHTSA recorded 44 complaints about the electrical system of the 2015 Toyota Sienna, 19% of the 233 complaints for this model year. Where a mileage was given, the median is 19,000 miles. 1 of these say a crash was involved and 4 a fire, according to the filers.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“I stopped at a gas station and was parked with the car on, and I reached under my front passenger seat (manual seat) and received a 20 amp shock from one of the wires under the seat. Resulting in my dislocating my shoulder from the muscle spasms. Taking it into dealership tomorrow morning but after talking with them they dont have any idea what could have caused it.”

NHTSA complaint #10970614, filed 2017-04, 90,500 miles

“When I get into the Sienna in a parking spot (stationery) and twist the key in the ignition the vehicle starts but the electronic steering does not work. This happens intermittantly. I have to sit there and let the vehicle run for awhile before the steering kicks in. The steering wheel is basically locked and difficult to turn. My greatest fear is that the steering wheel will lock up on me while I am driving and will not be able to steer.”

NHTSA complaint #11097977, filed 2018-05, 1,000 miles

“Van would reboot while parked or driving. It started with dashboard rebooting then I couldn't start the van. There was a time after driving I put the van in park and turned it off but my van was moving on it's own. I always call the dealership when the rebooting occurs. I was told either it was a software issue or since the problem went away, I should be fine. Well recently when my van stalled and had to be towed to the dealership. I was told it was a battery issue and the battery was replaced. …”

NHTSA complaint #11152668, filed 2018-11, 33,400 miles

“We ordered power rear seat that would by pushing a button. We had them the two past Sienna we had purchased 2010 & 2013. They we not on the Sienna and we were told by dealer that they could not be on this Sienna.”

NHTSA complaint #11054102, filed 2017-12, 8 miles

“I have a 2015 Toyota Sienna xle with 35,800 miles. - (no specific conditions or driving styles) it is on it's third transmission (second replacement was at 29,800 miles) - newest recall on the side doors opening randomly. - (no specific conditions or driving styles. Happens completely randomly) cruise control lever light flickering. It was replaced three times now. It was just replaced the third time recently, so I'll see if it happens again. - (no specific conditions or driving styles. …”

NHTSA complaint #10990866, filed 2017-05, 7,000 miles

Related service bulletins

11020657Jun 13, 2025The air conditioning dye injection tool kit has been developed to aid in identifying the location of air conditioning refrigerant leaks. The procedures outlined in this Service…
10238157May 30, 2023TSB: The Immobilizer and Smart Key Reset is a feature that allows the registration of new keys when all master keys are lost. Once the system is reset, all previously registered…
10207963Jan 28, 2022TSB This Service Bulletin includes guidelines meant to help determine whether to repair or replace a wire harness assembly based on damage type. This Service Bulletin should be…
10182983Oct 12, 2020TT: Some customers may encounter Bluetooth® connectivity concerns such as: ?Difficulty to pair the phone. ?Intermittent Bluetooth® failure to connect to the vehicle when first…
10179695Aug 5, 2020TSB: Some 2014 model year Toyota vehicles equipped with Entune? Audio (version 010169), Entune? Audio Plus (version 010171), or Entune? Premium Audio (version 010185) may exhibit…
10179599Aug 5, 2020TSB: Some 2014 model year Toyota vehicles equipped with Entune? Audio (version 010169), Entune? Audio Plus (version 010171), or Entune? Premium Audio (version 010185) may exhibit…
10169334Nov 18, 2019TT: Safety Connect is a vehicle option which requires a subscription fee for the system to be active after the initial trial period. Once the subscription has expired the DCM…
10166024Sep 18, 2019TT: Some customers may experience poor outgoing Bluetooth sound quality, this can occur for various reasons. Current multimedia systems are designed with the ability to adjust…
10164330Jul 1, 2019TSB: REVISION NOTICE July 01, 2019 Rev2: ? Applicability has been updated to 2019 ? 2020 model year Toyota vehicles. ? The Techstream Preparation and Process Overview sections…
10155247Feb 28, 2019TT: Some customers may encounter Bluetooth® connectivity concerns such as: ? Difficulty to pair the phone. ? Intermittent Bluetooth® failure to connect to the vehicle when first…

Electrical system: other model years

Year	Complaints	Share of year
2022	12	10%
2021	13	8%
2020	7	18%
2019	4	9%
2018	7	10%
2017	20	13%
2016	9	12%
2015	44	19%
2014	16	10%
2013	22	12%
2012	27	11%
2011	69	11%
2010	20	12%
2009	28	14%
2008	45	10%
2007	18	5%
2006	85	8%
2005	65	6%
2004	132	6%
2003	4	4%
2002	24	13%
2001	20	11%
2000	17	5%
1999	10	5%
1998	14	5%

Other parts of the 2015 Toyota Sienna

Body and structure
61 complaints Other or unknown
48 complaints Brakes
18 complaints Engine
16 complaints Wheels
14 complaints Transmission and drivetrain
12 complaints Steering
11 complaints Air bags
9 complaints Seat belts
8 complaints Suspension
8 complaints Fuel system
7 complaints Exterior lighting
6 complaints

← All problems reported for the 2015 Toyota Sienna

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology