2025 Toyota Crown Signia Problems
Owner-reported complaints filed with NHTSA, grouped by component
Data refreshed
What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 2025 Toyota Crown Signia, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Reports by component
Ranked by how many owner reports name each component category
- Electrical428.6%
- Engine214.3%
- Exterior lighting214.3%
- Driver assistance214.3%
- Tires & wheels17.1%
- Brakes17.1%
- Seat belts17.1%
- Body & structure17.1%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Each component in detail
What the reports in each category say, in the owners' own words
Electrical
Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.
From owner reports, verbatim
The contact's wife owns a 2025 Toyota Crown Signia. The contact received notification of NHTSA Campaign Number: 25V595000 (Electrical System); however, the part to do the recall repair was not yet available. The local dealer was made aware of the issue and confirmed that parts were not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure.
The contact owns a 2025 Toyota Crown Signia. The contact stated that while driving at an undisclosed speed, the instrument panel became inoperable, and the display screen appeared blank. The contact received notification of NHTSA Campaign Number: 25V595000 (Electrical System); however, the part for the recall repair was not yet available. The vehicle was taken to a dealer, but was not diagnosed or repaired. The dealer confirmed that parts were not yet available. The contact expressed concerns that the failure was hazardous and rendered the vehicle unsafe to drive. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the failure. The approximate failure mileage was 6,500. The VIN was not available.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Engine
Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components.
From owner reports, verbatim
The car was leased on 12/18/2024. On 01/24/2025, after starting the vehicle, the check engine light came on with the description: "a malfunction in the electronic control of the engine, throttle, or automatic transmission has been detected. Contact your Toyota dealer to have your vehicle inspected." I am attempting to get an appointment now to get the car in for service but being a month old - this shouldn't be happening.
I had buckled my seat belt and was grabbing my work phone, Iphone 13, to check it before leaving. I accidentally dropped it and it landed on the red part of my seat belt buckle. My seat belt automatically unbuckled. I was able to replicate this several more times. There is something going on with the engine where if you accelerate there is a coolant type smell then if you take your foot off the gas it sounds like the rpms are staying high. I've seen no warning lights for the car.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Exterior lighting
Reports naming headlights, tail lights, turn signals and other exterior lighting.
From owner reports, verbatim
Driver headlight is lower than passenger headlight creating a big dark side on driver side. Dealership say it can’t be corrected
Two issues: 1. Low-beam headlights shine way too low on the road and unsafely prevent adequate vision of potential road hazards or oncoming cars, and my model "Limited" only has "automatic headlight leveling" without any way to manually set level to raise up the beam to a safe level. 2. Low-beam headlights cast on the road a distracting dark outline of an attachment or harness plug attached to the LED bulb.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Driver assistance
Reports naming forward-collision avoidance, lane keeping, back-over prevention, cruise control and related electronic driver-assistance systems.
From owner reports, verbatim
While driving less than 10 mph, (slightly down hill) approaching the house garage, the car suddenly accelerated and the brake was applied to stop but the car continued and smashed through the garage door, proceeded through garage, smashed through the back of garage, hit a Weber gas grill, proceeded over a low-level deck and hit a large tree. The impact force of the car (left front) against the tree caused the car rear end to rise up and move 30 degrees to the right and land on the low-level deck. The driver was the only person in the car and suffered a broken right wrist and contusions to her chest. Both Front air bags did not deploy, side air bags did deploy. There was no warning given and the Car collision avoidance system did not stop the car. The damage to car was total. Car Emergency Voice activated and assisted in notifying ambulance and police. Insurance has reviewed the damage, but I am not aware that they are investigating for cause. There has been one other sudden acceleration reported of a 2025 Crown Signa. There is history of malfunctions of the Electronic Throttle Control (ETC) (per Google). There is an Event Data Recorder (EDR) on the car, but I don't know what is on it. This needs to be investigated. (If this unintended acceleration happened in a grocery parking lot, or on a highway, there could have been serious injuries or a death).
As I was driving down a suburban road at about 30mph the brakes suddenly came on by themselves for few seconds as I approached a parked car on my right side. As I started to pass this car my vehicle continued moving forewarned and I did not come to a complete stop. There were no cars in front or behind me except for the one car parked to my right. There were two electric beeps when the car braked.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Tires & wheels
Reports naming tires, wheels, hubs, or the tire-pressure monitoring system.
From owner reports, verbatim
Bridgestone tires were out at 18 k. The tires were roared by Toyota and aligned. This is a safety item and a fleet defect
Too few reports in this category for a page of its own — they appear in the full complaint list.
Brakes
Reports naming service brakes, the antilock braking system, brake hoses, master cylinders or the parking brake.
From owner reports, verbatim
As I was driving down a suburban road at about 30mph the brakes suddenly came on by themselves for few seconds as I approached a parked car on my right side. As I started to pass this car my vehicle continued moving forewarned and I did not come to a complete stop. There were no cars in front or behind me except for the one car parked to my right. There were two electric beeps when the car braked.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Seat belts
Reports naming seat belts, buckles, retractors and pretensioners.
From owner reports, verbatim
I had buckled my seat belt and was grabbing my work phone, Iphone 13, to check it before leaving. I accidentally dropped it and it landed on the red part of my seat belt buckle. My seat belt automatically unbuckled. I was able to replicate this several more times. There is something going on with the engine where if you accelerate there is a coolant type smell then if you take your foot off the gas it sounds like the rpms are staying high. I've seen no warning lights for the car.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Body & structure
Reports naming the vehicle structure, frame, body panels, doors, hood and trim.
From owner reports, verbatim
When leaning on the front seat center armrest, the armrest makes a clicking noise when hitting rough or bumpy roads. The Toyota dealer replaced the armrest, and the same issue occurred. Toyota told the dealer they want the part to investigate further.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Elsewhere on this vehicle
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .