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full bulletin at NHTSA ↗2009 Toyota Highlander electrical problems
severe 19 complaints filed with NHTSA · avg repair $850 · see electrical across all vehicles →
Failure mileage
Complaints
19
Recalls
0
Avg fix
$850
1fire
When does it fail?
Of the 19 electrical complaints filed for the 2009 Toyota Highlander, 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
No new NHTSA electrical complaint has been filed on this vehicle in over 10 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering electrical on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
TT: Some customers may encounter Bluetooth® connectivity concerns such as: ?Difficulty to pair the phone. ?Intermittent Bluetooth® failure to connect to the vehicle when first turning on the vehicle. ?Various Bluetooth® Audio functions are no longer functioning with customer?s phone such as ability to change the track using the steering wheel controls. These concerns can be caused by changes made on the customer?s phone. Make sure to inquire with the customer if the connectivity concerns occurred after receiving an operating system update on their phone, or if they have restored their phone data/settings recently.
full bulletin at NHTSA ↗TSB: OBSOLETE NOTICE August 11, 2020: This bulletin is no longer applicable and is now obsolete.
full bulletin at NHTSA ↗TSB: OBSOLETE NOTICE August 11, 2020: This bulletin is no longer applicable and is now obsolete.
full bulletin at NHTSA ↗TSB: OBSOLETE NOTICE August 11, 2020: This bulletin is no longer applicable and is now obsolete.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The most common complaint across these 19 reports is the power tailgate/liftgate motor seizing and jamming—multiple owners describe the door closing unevenly, freezing partway open, and refusing to open again electronically or manually. Owners have paid $3,000 to $5,000 to replace the motor, hinges, and sometimes the entire door assembly. Some dealers acknowledge a design flaw with the hinges; Toyota's warranty supposedly covers the issue only within three months or 36,000 miles.
Door lock actuators fail repeatedly—some owners report replacing all four actuators multiple times over five or six years, with individual replacements costing around $600. Failures are sometimes weather-dependent and leave the vehicle unlocked when the owner believes it is locked, creating safety concerns with children in the vehicle.
Several owners report electrical system malfunctions: loss of power while driving on the highway (codes U0001 and U0100), an electrical short that fried airbag wiring harness pins ($7,155 in replacement costs), and one vehicle catching fire in the driver's seat at 110,000 miles. One owner's AC unit failed four times in rapid succession with the dealer unable to identify the cause. An owner also reports engine overheating and excessive electrical behavior that multiple shops could not diagnose. Many of these issues fall outside warranty, and Toyota has consistently refused to acknowledge patterns or offer goodwill repairs.
Same Toyota Highlander electrical reports on nearby years: 2007 · 2008 · 2010 · 2011 · 2012
Failure modes owners describe
Power tailgate/liftgate motor failure and jamming
The automatic tailgate/liftgate motor seizes, gets stuck mid-cycle, or closes with unbalanced force, trapping the hatch in an ajar or fully closed position that will not open electronically or manually. Multiple owners report the door closing asymmetrically, damaging hinges and latch mechanisms in the process.
When: Occurs at various mileages; one owner reported repeated failures over 6+ months of ongoing issues
Symptoms owners cite: Tailgate/liftgate will not open or close automatically; Motor seizes or gets stuck in one position; Door freezes ajar (approximately 1 inch) on one side while latched on the other; Door closes with loud noise then will not open; Door offset by approximately 1/4 inch toward one side; Liftgate opens by itself while stationary or vehicle is moving; Owner must force door open or closed manually
Repairs/costs cited: Toyota dealerships have replaced entire tailgate assemblies, motors, and hinges. Repair costs cited range from $1,500 to $5,000+ depending on whether hinges, rails, shocks, and the door itself also require replacement. One owner paid ~$5,000 including rental car for 12 days. Body shop quotes for motor replacement alone cited $1,200–$1,500.
Recalls/TSBs owners mention: Service Bulletin issued for liftgate problems; Toyota has acknowledged a design problem with door hinges. Some dealers speculate the vehicle was bumped into to explain misalignment, which owners deny. One dealership mentioned Toyota has known about the problem but only honors warranty within 3 months/36,000 miles.
Door lock actuator repeated failure
All four door lock actuators fail repeatedly, with some requiring replacement 3–4 times within a few years. Owners are left unable to lock or unlock doors via remote or power-lock buttons, forcing them to use the key manually or climb across the vehicle. Safety concern: vehicle appears locked but is actually unlocked, or child safety locks become inoperative.
When: Failures begin around 2012–2013 and continue through at least 2018; one owner replaced actuators at 8/2012, 6/2013, 7/2013, 3/2014, 4/2014, 5/2014, 2015, 2016, and 9/2018
Symptoms owners cite: Door locks fail to engage with remote or power-lock button; Locks work intermittently, sometimes affected by weather (humidity, rain); Driver unable to lock or unlock doors except manually with key; Child safety locks inoperative; Cannot open car with key in some instances; Multiple doors lock at different times
Repairs/costs cited: Each actuator replacement costs approximately $600 per door. Warranty coverage lapses; owners out of warranty face full repair cost. One owner had extended warranty that expired, and subsequent failures cost $600 each with no manufacturer assistance.
Recalls/TSBs owners mention: Toyota has refused to acknowledge a pattern defect or provide continued assistance once warranty expires, citing the owner's vehicle being out of warranty. Toyota case #1701210527 opened but manufacturer refused to determine the root cause of repeated failures.
Electrical system loss of power while driving
Vehicle suddenly loses power while owner is driving on the highway; all dashboard and warning lights illuminate, accelerator becomes unresponsive, and the driver barely manages to pull the vehicle to the roadside. Car can restart but check engine light and check hybrid system warning remain on.
When: Three incidents reported over the course of one month; failure mileage not specified
Symptoms owners cite: Sudden loss of power while driving on highway; All dashboard lights flash on simultaneously; Check engine light illuminates; Check hybrid system warning light illuminates; Accelerator does not respond; Vehicle shuts off and can restart
Repairs/costs cited: Owner pulled diagnostic codes U0001 and U0100 on the first occurrence; second and third incidents did not generate codes. No repair resolution documented.
Electrical harness short and airbag system failure
Electrical short in the junction box behind the driver-side front panel causes the airbag wiring harness pins to become fried. Because the same junction box supplies power to the rear wiring harness (tail, headliner, and rear vehicle), both harnesses must be replaced. SRS airbag warning illuminates on dash.
When: Failure at unknown mileage; quote issued as $7,155 for both harness replacements
Symptoms owners cite: SRS airbag check warning on instrument panel; Airbag wiring harness pins fried due to electrical short
Repairs/costs cited: Quote to replace airbag wiring harness (Part # 82141-48R51) and rear wiring harness (Part # 82162-48D40) totaled $7,155. Owner notes the junction box is hidden behind driver-side front panel, making diagnosis and repair difficult.
Intermittent door lock malfunction and remote access failure
Lock actuators malfunction when using remote or power locks; certain locks work intermittently and may be affected by weather conditions such as humidity or rain. Owner cannot reliably lock or unlock doors, creating a false sense of security.
When: Ongoing issue; timing not specified
Symptoms owners cite: Lock actuators malfunction with remote or power-lock button; Certain locks work sporadically; Failures correlate with humidity or rainy weather; Driver believes doors are locked when they are not; Doors are unexpectedly unlocked when parked in public
AC unit repeated failure
Air conditioning unit fails repeatedly; repairs are made by authorized dealer but the unit works only briefly before failing again. Dealer unable to identify root cause or duplicate failure in diagnostic testing.
When: Unit failed four times; failure mileage was 4,624 at first report
Symptoms owners cite: Air conditioning unit fails; Short operational period after repair before failure recurs
Repairs/costs cited: Repairs performed by authorized Toyota dealer; no further details on parts or costs provided.
Acceleration hesitation and instrument panel flickering
Vehicle hesitates when accelerator is pressed, then lunges forward after brief delay. All instrument panel lights flicker continuously. Driver-side brake light defective. Dealer investigator unable to diagnose the root cause.
When: Failure mileage 800; current mileage 26,500 at time of complaint
Symptoms owners cite: Vehicle hesitates when accelerator is pressed; Vehicle lurches forward after brief delay; All instrument panel lights flicker continuously; Driver-side brake light defective
Repairs/costs cited: Vehicle not repaired; technician was not allowed to touch the vehicle pending investigator diagnosis.
Recalls/TSBs owners mention: Manufacturer not made aware of the failure; investigator unable to diagnose.
Electrical system overheating and general malfunction
Vehicle experiences persistent electrical problems that multiple mechanic shops cannot diagnose. Engine temperature rises excessively on highway, forcing owner to drive at reduced speed with flashers on. Battery replaced twice without resolving the issue.
When: Ongoing issue; timing not specified
Symptoms owners cite: Undiagnosed electrical problem; Engine temperature rises excessively; Vehicle requires operation at reduced speed with flashers
Repairs/costs cited: Battery replaced twice with no resolution.
Vehicle fire—electrical origin
Vehicle caught fire on the front driver's seat. Fire department extinguished the fire and the vehicle was destroyed. Manufacturer stated the vehicle was not included in NHTSA campaign 14V743000 (Electrical System).
When: Failure mileage 110,000
Symptoms owners cite: Fire on front driver's seat
Repairs/costs cited: Vehicle was destroyed.
Recalls/TSBs owners mention: Manufacturer stated vehicle was not included in NHTSA campaign 14V743000 (Electrical System).
Climate control and electrical accessory intermittent operation
Rear door hatch automatic closure fails; AC and heat shut on and off erratically; buttons function unpredictably regardless of what is turned off or on. Problem ongoing for 4+ years with no resolution.
When: Ongoing for 4+ years at time of complaint
Symptoms owners cite: Rear electrical door hatch fails to close properly; AC/heat shuts off and on unexpectedly; Buttons malfunction and respond unpredictably; System behavior inconsistent with user input
Synthesized from 19 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 3 most recent
Rear door motor lift not working
3 times over the last month, while I was driving my vehicle, the car suddenly lost power while I was driving on the highway. All the dashboard lights flashed on, check engine light and warning lights illuminated. The vehicle lost power, the accelerator was not working, and I was just barely able to pull the car over to the side of the road. Car turned off and was able to turn back on, now with…
Liftgate will not close or open when automatic button is pushed either on the dash or the button on the liftgate itself. Stays open and have to force the liftgate down manually. At times liftgate will open by itself while stationary or vehicle is moving. Closing or opening the liftgate automatically problem has be ongoing for about 6 months. Brought to dealership and they could not repair, but I…
Had electrical trouble with your 2009 Toyota Highlander?
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 2009 Toyota Highlander?
It's a meaningful issue. 19 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $850.
At what mileage does the electrical typically fail?
Across the 17 complaints that reported odometer mileage, most electrical failures cluster between 53,275 and 90,000 miles, with the median around 75,000. A quarter of owners report trouble before 53,275; a quarter make it past 90,000. 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/2009/Toyota/Highlander.
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.