The 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 Bulletin aid in locating, inspecting, and repairing refrigerant leaks.
full bulletin at NHTSA ↗2015 Toyota Corolla electrical problems
severe Owners of the 2015 Toyota Corolla have filed 12 NHTSA complaints about the electrical at roughly $850 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See electrical across all vehicles →
Complaints
12
Recalls
0
Avg fix
$850
| Model year | electrical complaints |
|---|---|
| 2011 Corolla | 15 |
| 2012 Corolla | 10 |
| 2013 Corolla | 10 |
| 2014 Corolla | 47 |
| 2015 Corolla (this page) | 12 |
| 2016 Corolla | 13 |
| 2017 Corolla | 19 |
| 2018 Corolla | 12 |
| 2019 Corolla | 13 |
2crashes
1fire
2injuries
When does it fail?
Of the 12 electrical complaints filed for the 2015 Toyota Corolla, here's the actual mileage breakdown — failures cluster heaviest at 50,000-75,000 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 7 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.
TSB: 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 keys will be erased. Follow the procedures in this bulletin to reset a vehicle Immobilizer or Smart Key system.
full bulletin at NHTSA ↗TSB 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 used in conjunction with the applicable model and model year Electronic Wiring Diagram (EWD) and/or Repair Manual.
full bulletin at NHTSA ↗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: REVISION NOTICE December 02, 2019 Rev1: ? The bulletin title and Software Update section have been updated. Any previous printed versions of this bulletin should be discarded. Some 2014 model year Corolla vehicles equipped with Entune? Audio (version BU.26.42) or Entune? Premium Audio (version AU.26.61) may exhibit one or more of the following conditions. ? Apps screen displays after reroute (Entune? Premium Audio only) ? Voice command system freezes during phonebook transfer ?Voice command system freezes when radio is in XM mode ? Bluetooth® is inoperative while using Apps ? Sent SMS message continually appears on display audio for BlackBerry® devices (Q10 and Z10)
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners report multiple electrical failures across critical and convenience systems. Door lock actuators on the driver and passenger sides fail to respond to key fob or interior controls, forcing manual operation via the physical key. One owner states the dealer blamed gel air fresheners without performing diagnostics.
Electronic powertrain issues appear as well: a 2015 Corolla with only 6,100 miles threw a P2757 code (torque converter clutch pressure control solenoid fault) repeatedly, with the traction control light illuminated. Toyota has not acknowledged this as a defect.
Infotainment touchscreens malfunction, with the bottom half becoming unresponsive or registering touches inaccurately, blocking access to vehicle settings. One dealer quoted $2,000 for repair.
Battery drain is another complaint—owners report batteries fully depleted after four days of non-use despite multiple replacements. Toyota attributes this to insufficient driving frequency rather than acknowledging a defect.
Two separate airbag non-deployment incidents are reported during impacts, one involving a severe highway collision with an 18-wheeler. Owners also note loose bolts discovered inside door cavities, originating from window regulators or motors, raising durability concerns.
Specific diagnostic codes cited include P2757. No manufacturer recalls or technical service bulletins addressing these failures are mentioned by owners.
Same Toyota Corolla electrical reports on nearby years: 2013 · 2014 · 2016 · 2017 · 2018
Failure modes owners describe
Door Lock Actuator Failure
Driver and passenger side electronic lock actuators fail to respond to key fob or interior door lock controls. Doors only unlock mechanically via FOB key or from inside the vehicle.
Symptoms owners cite: Door lock does not respond to key fob; Door lock does not respond to interior panel controls; Door does not lock when vehicle is in motion; Only manual unlock via key or interior lever works
Torque Converter Clutch Pressure Control Solenoid Fault
PCM diagnostic code P2757 appears repeatedly, indicating a torque converter clutch pressure control solenoid fault attributed to faulty wiring or a defective solenoid. Traction control warning light also illuminates.
When: 6,100 miles, after approximately one year of ownership
Symptoms owners cite: P2757 diagnostic code repeatedly appears; TRAC OFF warning light illuminates
Codes mentioned: P2757
Infotainment Touchscreen Non-Responsive
Infotainment system touchscreen stops functioning or becomes inaccurate, particularly in the bottom half of the display. Users cannot select buttons or access vehicle information and settings.
Symptoms owners cite: Bottom half of touchscreen does not work; Touchscreen does not accurately register touch inputs; Cannot access car information or settings via touchscreen
Repairs/costs cited: Dealership quoted $2,000 for repair
Window Regulator Bolt Looseness
Bolts from the window regulator or motor assembly come loose and fall inside the door cavity. One bolt was discovered partially protruding from a rear passenger door drain hole; the dealer removed the door panel, identified the bolt as originating from window parts, and retightened it.
Symptoms owners cite: Loose bolt found partially protruding from rear passenger door drain hole; Bolt originated from window regulator or motor assembly
Repairs/costs cited: Dealer removed door panel and retightened bolt as a courtesy repair
Airbag Deployment Failure
Airbags fail to deploy during impact collisions. One owner reported an accident where an 18-wheeler struck the vehicle and airbags did not activate; another reported airbags failed to deploy during impact with constant low tire pressure warnings and electrical issues also present.
Symptoms owners cite: Airbags do not deploy during impact; Constant low tire pressure warnings; Electrical system issues
Battery Drain
Battery drains completely if the vehicle is not used for approximately four days, requiring replacement twice within a short timeframe. Toyota does not acknowledge the problem and attributes it to insufficient vehicle use.
When: Since July 2019
Symptoms owners cite: Battery drained if vehicle not used for 4 days; Multiple battery replacements required
Repairs/costs cited: Battery replaced twice
Recalls/TSBs owners mention: Toyota stated vehicle must be used every two days to maintain battery charge
Synthesized from 12 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 2 most recent
Trunk fire unknown cause, car was parked
I want to report that I found a loose bolt poking out of the drain hole on the rear passenger door of our 2015 toytota corolla. It was oriented in such a way that only the threaded end was poking out the hole and held inside the door by the bolt head. I took it to the dealer and as a courtesy they removed the door panel and determined it had come from one of the window parts (regulator or…
Had electrical trouble with your 2015 Toyota Corolla?
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 2015 Toyota Corolla?
It's a meaningful issue. 12 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $850.
At what mileage does the electrical typically fail?
Based on the 12 complaints filed, electrical issues most often appear around 39,331 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
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/2015/Toyota/Corolla.
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.