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.
2005 Toyota Sienna electrical problems
moderate 59 complaints filed with NHTSA · avg repair $850 · see electrical across all vehicles →
Failure mileage
Complaints
59
Recalls
0
Avg fix
$850
1injury
When does it fail?
Of the 59 electrical complaints filed for the 2005 Toyota Sienna, here's the actual mileage breakdown — failures cluster heaviest at 75,000-100,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Owners have filed 59 electrical complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
Among the 16 model years of Toyota Sienna in our records for electrical problems, this one ranks #3 by owner-complaint volume.
The failure pattern owners describe
Buyer takeaway: The 2005 Sienna has well-documented electrical and electronic control defects that Toyota has not recalled: power sliding doors fail at 35k–190k miles (costing $1,000–$2,500 per door), battery parasitic drains occur from failed light shutoff circuits, and multiple owners report airbag warning lights, brake system electrical shorts, and VSC overcorrection. Budget for potential door repairs and verify all electrical and safety systems before purchase, as most warranty coverage has long expired.
Power sliding doors are the dominant complaint in this electrical cluster. Owners across 59 complaints describe both driver and passenger side doors that fail to open, fail to close, reverse unexpectedly, or become stuck—often within the first five years and between 35,000 and 190,000 miles. Many failures occur near the 36,000-mile warranty cutoff, leaving owners stranded with $1,000–$2,500 repair quotes. Cold weather makes failures worse. The issue worsens from simple mechanical sticking to complete motor-and-cable-assembly failure. Toyota issued a warranty extension to 120,000 miles for certain door components in 2004–2007 Siennas and published Technical Service Bulletins, but has not issued a recall despite hundreds of owner complaints documented online.
Beyond doors, owners report battery drain problems where parasitic draw kills the battery in under 30 minutes when doors or interior lights are left on—a defect in the automatic shutoff circuits. Airbag warning lights illuminate or flash continuously in multiple vehicles, sometimes after dashboard recall service, with repairs requiring entire wiring harness replacement ($2,500+). One owner experienced VSC overcorrection that nearly caused a crash, and another reported the electronic throttle control system entering fail-safe mode repeatedly. Brake electrical shorts and crankshaft pulley separation (matching a known recall but denied by Toyota) round out a pattern of electrical system fragility. Dealers consistently claim inability to diagnose root causes and push parts replacement without investigation.
Same Toyota Sienna electrical reports on nearby years: 2006 · 2007 · 2008
Failure modes owners describe
Power sliding door mechanism failure (latch, actuator, motor, cable)
The power sliding doors (driver and/or passenger side) stop operating. Doors may fail to open, fail to close, open/close erratically, or become stuck in one position. Multiple owners report that replacement of entire motor assemblies, cable assemblies, or latch assemblies is required—typically quoted at $1,000–$2,500 per door. The problem often worsens in cold weather. Some owners report the cable rusting through or snapping due to external exposure.
When: Failures reported between 35,000 and 190,000 miles; many near or just beyond the 36,000–120,000 mile warranty window.
Symptoms owners cite: Door fails to open or close with power button, remote, or manual handle; Door opens partway then closes, or closes then reopens without input; Door stuck in open or closed position; Loud popping noise or abnormal noise when cable snaps; Beeping noise and vehicle unable to drive until door issue addressed; Failure worse in cold weather and below-freezing temperatures; Door can only be opened/closed manually with difficulty or significant force; Cable visible hanging or exposed on outside of vehicle
Repairs/costs cited: Motor assembly replacement $1,000–$2,500 per door; entire cable-motor unit must be replaced (cannot be serviced separately); some owners report dealer diagnostic fees ($192–$295) even when warranty expired; replacement struts also quoted at ~$500.
Recalls/TSBs owners mention: Toyota issued Warranty Enhancement Notice for 2004–2007 Sienna rear sliding door latch and cable assemblies, extending warranty to 120,000 miles. However, owners report dealers denying claims due to different part numbers. Toyota has issued Technical Service Bulletins (TSBs) for the issue but has not issued a formal recall. Extended service plan offered to owners out of warranty.
Electronic throttle control system malfunction (P0121 code)
The electronic throttle control system malfunctions, triggering a P0121 diagnostic trouble code and causing the vehicle to enter 'fail-safe' mode with reduced drivability. The problem recurs even after throttle body replacement. Owners report dealers refusing to investigate beyond reading the code or examining freeze-frame data, instead demanding full throttle body replacement.
When: First reported at 50,000 miles; recurred within 10,000 miles of throttle body replacement.
Symptoms owners cite: Sudden loss of drivability due to fail-safe mode activation; P0121 diagnostic trouble code; Hesitation or lack of response to accelerator input
Codes mentioned: P0121
Repairs/costs cited: First throttle body replacement cost $1,200; owner suspects underlying electrical issue with throttle valve motor or accelerator pedal rather than throttle body itself, but dealer refused further investigation.
Recalls/TSBs owners mention: Toyota customer service and dealers refuse to investigate beyond code reading; offer only full throttle body replacement as solution.
VSC (Vehicle Stability Control) system overcorrection
The VSC system responds excessively to minor wheel skids, causing sudden violent steering inputs that nearly caused a loss of vehicle control. The driver experienced an anticipated minor skid on a dry road but the VSC kicked in abruptly and steered the van into the opposite lane at high speed on an undivided highway.
When: Incident occurred while cornering at 35 mph on a downhill left turn in winter conditions.
Symptoms owners cite: VSC activates suddenly in response to minor, expected skid; Excessive and rapid steering correction toward opposite lane; VSC light illuminated; Driver reports inability to reduce or disable VSC response rate
Crankshaft pulley failure with secondary belt damage
The crankshaft pulley outer ring separated from its rubber inner ring, causing severe misalignment. This damaged the serpentine belt, timing belt, and power steering belt. The failure matches characteristics of NHTSA Recall 11V539000, but Toyota claims the vehicle VIN is not covered by the recall despite identical model, year, engine, part markings, and manufacture date.
When: Failure occurred after being driven on a 4-lane highway; vehicle manufactured February 2005, purchased September 2005.
Symptoms owners cite: Burning rubber smell; Battery discharge indicator light; Serpentine belt shredded and hanging; Crankshaft pulley outer ring visibly separated from rubber inner ring; Misalignment of outer ring
Repairs/costs cited: Required replacement of crankshaft pulley, serpentine belt, timing belt, and power steering belt.
Recalls/TSBs owners mention: Toyota denied recall applicability claiming the vehicle VIN is not covered, despite matching all characteristics of NHTSA Campaign 11V539000.
Battery discharge/parasitic drain
The battery drains dead within 30 minutes when doors are left open, interior lights remain on, or radio is on with the engine off. Multiple owners report requiring jump-starts after routine activities like listening to the radio for 15 minutes with ignition off or leaving the trunk/doors open briefly. The automatic dome-light shutoff system appears not to function properly, and the automatic headlight feature does not turn off when the engine is off.
When: Problems reported starting early in vehicle ownership and continuing repeatedly over years of ownership.
Symptoms owners cite: Battery drains dead in less than 30 minutes when doors or trunk left open; Battery drains after radio use with engine off; Battery drains after interior lights left on; Automatic headlight feature fails to turn off when engine is turned off; Multiple jump-starts required (10+ times in 3 years for one owner)
Repairs/costs cited: Dealer found pinched wire in one case (related to aftermarket DVD installation); in other cases dealers performed 5+ diagnostic visits and found nothing, suggesting they could not diagnose the root cause.
Recalls/TSBs owners mention: Dealers attributed failures to owner error (dome lights left on, doors open) even when automatic shutoff systems are present; offered no corrective action.
Airbag warning light illumination (multiple causes)
The airbag/SRS warning light remains illuminated or flashes continuously on the instrument panel. In one case, the light appeared after dashboard replacement under recall; in another, the entire wiring harness and airbag system parts require replacement at 70,000 miles. Multiple owners report the light persisting for years without dealers providing diagnosis or repair. In some cases, dealers claim the failure is unrelated to recent work but refuse to diagnose further.
When: Reported at mileages from 21,600 to 209,560 miles; some incidents follow dashboard recall service.
Symptoms owners cite: Airbag warning light illuminated or blinking on dashboard; Continuous flashing of airbag light while driving (35+ mph); Light persists for years without apparent cause; False reading concerns among owners
Repairs/costs cited: Quoted repair costs include replacement of entire wiring harness and airbag system components ($2,500+); some repairs involved replacing passenger seat multiple times (4 times in one case); one owner reports an 'electronic part' (unspecified) replacement.
Recalls/TSBs owners mention: Toyota dashboard recall (reference in complaint #7) in some cases preceded airbag light appearance. Dealers claim light is unrelated to recent work without conducting diagnostics. In one case, manufacturer offered no assistance when vehicle was out of warranty.
Unintended acceleration while using cruise control
The vehicle accelerated unintentionally while cruise control was engaged, reaching 90 mph with a single push of the acceleration handle. The owner reports no foot was on any pedal and no floor mat issue was present, suggesting an electronic or software problem.
When: Occurred after owner purchased a used 2005 Sienna with 95,000 miles.
Symptoms owners cite: Sudden unintended acceleration while on cruise control; Powerful engine revving toward full speed; Vehicle accelerated to 90 mph from single push of acceleration handle; No foot on pedal; no floor mat issue; Owner able to brake off from cruise control each time
Key fob and door actuator failure (multiple door actuators)
The key fob fails to lock, unlock, or activate the sliding doors. After battery replacement, the failure persists. A dealer advises that all five door actuators need replacement, though the vehicle was not repaired.
When: Failure occurred at approximately 112,000 miles.
Symptoms owners cite: Key fob fails to unlock or lock doors; Key fob fails to activate sliding doors; Problem persists after key fob battery replacement; Failure occurs on multiple occasions
Repairs/costs cited: Dealer diagnosis: all five door actuators need replacement (cost not stated).
Recalls/TSBs owners mention: Manufacturer notified but no response or assistance provided.
Brake electrical system short and failure
The brake electrical system shorted, causing failure of the gear release and brake lights. Fuses blow instantaneously when brakes are applied. The failure appears to be in the ribbon wiring harness.
When: Failure occurred at 43,560 miles.
Symptoms owners cite: Gear release failure; All brake lights failure; Fuses blow instantly when brakes are applied; Brake functions remain but no brake lights (safety hazard); Lights and body wiring unaffected
Repairs/costs cited: Failure appears to be ribbon wiring harness; specific repair not completed per narrative.
ABS, VSC, TRAC, and tire pressure warning lights (intermittent)
Multiple warning lights (ABS, VSC, TRAC, and tire pressure indicator) illuminate during driving under normal conditions, then fail to turn on the following morning (abnormal behavior), and subsequently turn on during starting. The pattern suggests an intermittent electrical or sensor issue.
When: Lights came on while driving under normal conditions.
Symptoms owners cite: ABS, VSC, TRAC, and tire pressure warning lights come on simultaneously; Lights do not illuminate the next morning (unexpected behavior); Lights illuminate during subsequent starting (normal pattern); No apparent cause (tires checked, gas cap secure)
Radio and climate control intermittent operation
The radio works intermittently and emits a continuous humming sound. The climate control system has problems with heat blend-door actuators and relays. The dashboard developed cracks. The rear camera and navigation system stopped working. Owners believe the problems are electrical in nature and that there is a root electrical system issue, but Toyota has refused repair citing out-of-warranty status.
When: Radio humming and intermittent operation reported; dashboard cracks at 98,000 miles; camera and navigation failures reported.
Symptoms owners cite: Radio works intermittently; Continuous humming sound from radio; Rear camera stopped working; Navigation system stopped working; Heat does not defrost properly; Heat output differs between left and right sides (blend-door issue); Heat actuator/blend door relay electronic failures; Dashboard cracks in multiple locations
Repairs/costs cited: Owner suspects ribbon wiring harness issue affecting multiple systems.
Recalls/TSBs owners mention: Toyota refused to fix problems, stating vehicle was out of warranty.
Power door mechanical hazard (cable snap, hand entrapment)
When a power sliding door cable snaps or the door mechanism fails, the door can slam shut unexpectedly with force, trapping hands or body parts. In one case, the cable snapped while the door was being opened, making a loud popping noise and creating a hazard for the face, hand, or eye. When the door fails in the closed position after a cable break, it becomes impossible to open for emergency egress.
When: Cable snap incidents reported at various mileages; one door stuck closed after manual closure following cable break.
Symptoms owners cite: Cable snaps with loud popping noise while opening door; Door suddenly slams shut with force; Door closes with great strength, posing hazard to children trying to exit; Door stuck in closed position after cable failure; Cannot open door manually or with power after cable break; Risk of hand/finger/face entrapment if hand is in door when it closes
Repairs/costs cited: Entire motor-cable assembly must be replaced ($1,000–$2,500); cable rusted due to external exposure in one case.
Recalls/TSBs owners mention: Toyota refuses to recall despite widespread online complaints.
Synthesized from 59 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 2 most recent
Toyota recently recalled the power sliding door cables for certain Toyota sienna years. The broken cable inhibits the door from working correctly. Ours, a 2005 sienna, was taken in and it turned out to be the power sliding door actuator. Five days ago, the other sliding door actuator failed. Both doors cannot be opening correctly and poses a serious danger to the safety of our 2 young children.…
Had electrical trouble with your 2005 Toyota Sienna?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the electrical problem on the 2005 Toyota Sienna?
It's a documented issue but not catastrophic. 59 complaints have been filed. Repairs average $850 and most owners catch it before it causes a breakdown.
At what mileage does the electrical typically fail?
Across the 48 complaints that reported odometer mileage, most electrical failures cluster between 59,000 and 112,000 miles, with the median around 85,000. A quarter of owners report trouble before 59,000; a quarter make it past 112,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $850 for electrical repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to electrical?
No active recalls currently cover electrical issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2005/Toyota/Sienna.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.