2026 Honda Passport electrical problems

Filed Nov 6, 2026 · Electrical · LA

Since around June 2026, the infotainment system in my 2026 Honda Passport shows 'Not connected to TCU,' 'Update error. See your dealer,' and update error codes TT04 (update interrupted/failed) and TT06 (update unavailable). The telematics control unit will not connect, so the vehicle cannot download or install over-the-air software updates, and HondaLink remote functions, the Wi-Fi hotspot, and built-in Google services do not work. I took the vehicle to Cannon Honda in August 2026 and to Ryan Honda in October 2026 for the same issue; neither dealer could fix it. Ryan Honda said they would contact Honda, but there has been no fix and no callback. Because the vehicle cannot receive over-the-air updates, it cannot receive any safety-related software updates delivered that way. This same failure has been reported by many other 2026 Passport owners.

Filed Nov 6, 2026 · Electrical, Engine · NY

The car, without any warning or issue in operation otherwise, failed to start and left the driver stranded on two separate occasions. The issue is not due to low battery charge as the battery was tested and shown to have 100% state of health and 65% + state of charge. Symptoms of the issue: the dashboard did not light up to show any warning lights at all; the infotainment head unit displayed an error message: "Feature not available while the car is in motion" when attempting to choose the driver profile (the car was off, not operational and not in motion); alarm system sounded with flashing lights; seat power was fully functional; the car, with brake depressed while pushing the engine on/off button, would not start or provide any feedback. The driver was left at a rest stop in a rural area off the interstate for over 6 hours waiting for a tow service that never showed up. Driver left the car at the rest stop, took a $130 Uber home and then rented a car to meet the tow service the next day since Honda Roadside assistance told the driver they needed to be present in order for the tow to take place. The tow service failed to show up again after over 3 hours of waiting. Honda Roadside assistance finally agreed to tow the car "unattended" to the nearest dealership. Said dealership had the car for two days and upon returning the car stated: "there have been 4 known such issues in the country with Honda Passports, we tried a few things and have it working again. We also replaced a retention clip to ensure the suspected cable doesn't become "soft-set" again. We don't think this will happen again, but in case it does...." and proceeded to show me how to reset the retention clip under the hood that was replaced. Unacceptable resolution, the car cannot be trusted and I have a case open with American Honda Motor trying to get them to take me out of the lease.

Filed Oct 11, 2026 · Electrical · NC

Like many others have reported on the internet, I am now seeing the TT04 message on the dashboard inidicating that a software update was interrupted and I must see the dealer. This is concerning in that this bug has been reported for years and Honda has failed to find a solution. What exactly is not working in the car with a failed update? What must a dealer do to fix the update and is the car safe until then? No answers from Honda in two years.

Filed Oct 5, 2026 · Electrical · 590 miles · OR

The contact owns a 2026 Honda Passport. The contact stated that while driving at an undisclosed speed, the ignition warning light illuminated and the message "Keyless Access Failure” was displayed with the TPMS warning light illuminated. The vehicle was taken to a dealer where it was diagnosed and determined that the wiring and connectors in the dashboard needed to be repaired. The vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was approximately 590.

Filed Sep 22, 2026 · Brakes, Driver assistance · NM

Vehicle: 2026 Honda Passport VIN: [XXX] Mileage at time of most recent incident: ~16,795 miles Dealer(s): Garcia Honda, Albuquerque, NM (selling dealer); Honda of Santa Fe (servicing dealer) Complaint narrative: I am experiencing recurring electrical system failures and brake-related warning malfunctions in my 2026 Honda Passport that have required three separate repair attempts: [XXX] (RO [XXX]): Auto Stop/Start system shut down unexpectedly. Dealer installed a software update. Vehicle died while driving, [XXX] (RO [XXX]): Vehicle died while driving, with hazard lights inoperative. Diagnostic code U1291 was found, but the dealer could not confirm the underlying fault. [XXX] (RO [XXX], ongoing): Vehicle displayed multiple warning lights and a brake system malfunction message. As of 9/22/2026, the vehicle remains at the dealership and has been disassembled for diagnosis. These are not isolated incidents — the 2026 Passport has multiple other owner-reported complaints to the federal safety agency describing unexpected shutdowns, brake system warnings activating without cause, and safety features engaging unexpectedly, suggesting a pattern consistent with an underlying electrical/braking system defect rather than a vehicle-specific issue. The unpredictable nature of these failures — sudden shutdown while driving, loss of hazard lights, and unexplained brake warnings — poses an ongoing safety risk to myself and other drivers. I am also currently pursuing lemon law arbitration against Honda (NCDS case HON260745) regarding this vehicle. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Sep 8, 2026 · Electrical · NV

Driving from [XXX] to [XXX], just over 1hr into trip @ 100 miles out of town and on one of the many steep inclines on the route, the engine power seemed to pulse, as if increase and decrease of gas/acceleration, then has every single alert possible illuminated on dash with the bell sound: Electric power steering system problem, steering assist reduced. Electric parking brake system problem, parking brake not available. Brake system problem, brake performance may be reduced. Brake hold system problem, apply brake when stopped. Vehicle stability assist system problem, reduced traction and handling. Trailer stability assist system problem. Hill descent control system problem, apply brake when descending. Hill start assist problem, vehicle may roll upon brake release. Adaptive cruise control system problem. Collision mitigation braking system problem. Road departure mitigation system problem. Low speed braking control problem. Emission system problem, avoid heavy acceleration and high speed. All wheel drive system problem, only front wheels may be powered. All alerts ending with 'See your dealer' The car then had reduced power which was a significant safety concern and driving risk when navigating hills and traffic flowing at 75mph uphill while this vehicle going slower and slower regardless of gas pedal pressure: 65mph, than 60mph, than 55mph, than 50mhp eating gas like crazy. Coasted into gas station to asses. At low speed there was a rattle upon pressing gas pedal coming from under the hood. The vehicle is 3 months old and has 4,197 miles. It is not simply that the alerts illuminated, those systems were all affected: braking, steering, acceleration, lane departure, cruise control etc. all were not working. Heavy acceleration and high speed were not even an option. Somehow made it back to [XXX] in limp/aux mode. Dealer has had vehicle for 6 hours and no update other than, 'it's not the battery' INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Sep 6, 2026 · Electrical, Lights · CO

Re: Case #[XXX] – Outstanding Concerns Case #[XXX] 2026 Honda PASSPORT, VIN: [XXX]. As we discussed, I am requesting that American Honda Motor Co. voluntarily repurchase my 2026 Honda Passport TrailSport Elite. March 9, 2026: During a scheduled oil change, I reported the phone echo and infotainment concerns. The dealership was unable to duplicate the issue at that time. May 27, 2026: Vehicle evaluated for recurring infotainment concerns. The issues were not resolved. June 1, 2026: Vehicle returned for continued infotainment concerns. The issues remained unresolved. June 19, 2026: The dealership replaced the entire infotainment/head unit. Unfortunately, the original defects persisted immediately following the repair. In addition, Honda released an over-the-air (OTA) software update in March 2026. That update also did not resolve the infotainment defects. Since purchasing the vehicle in late October 2025, I have experienced persistent infotainment defects, including a phone echo affecting the receiving party on every outgoing phone call. Since I began formally documenting the issues in March 2026, I have documented 21 infotainment freezes and screen blackout incidents. These issues began shortly after I purchased the vehicle in November 2025 but were not individually documented until March. The multiple issues with my infotainment system screen blacking out while driving is a significant safety concern and prohibits my ability To safely use my car for maps and GPS road conditions in the daily mountain areas I drive safely. Despite my attempt to bring this to Honda corporate on two separate occasions, they are dismissing the case. Honda engineers have admitted as of July 2, 2026 in writing that this is a known issue and they are admitted in writing, there is no fix. My Honda dealer has worked relentlessly to try to help me and Honda corporate customer service has dismissed me. I need help for my significant safety issue! INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(

Filed Jul 22, 2026 · Driver assistance, Electrical · SC

The seat memory of the vehicle will reset itself every few days. This is while using the same key fob and driver profile. Android auto does not stay connected wired or wireless. This is after the vehicle has been factory reset, new cables used and phone reset. Buzzing/ grinding noise while breaking Blind spot sensors do not beep while the setting is activated to beep

Filed Jul 22, 2026 · Brakes, Driver assistance · TX

My 2026 Honda Passport TrailSport Elite has twice applied its brakes on its own, with no obstacle, vehicle, or hazard in front of me to justify braking. On July 13, 2026, at approximately 5:36 p.m., I was driving in evening traffic when the vehicle suddenly braked hard on its own. Nothing was in front of me. The car behind me nearly rear-ended me and had to brake sharply to avoid a collision, and the driver reacted with road rage. On July 16, 2026, at approximately 6:03 p.m., my young son was in the vehicle with me. While I was driving in traffic, the vehicle again braked on its own with no obstacle ahead. A sedan behind me nearly rear-ended me. This sudden, uncommanded braking happens without warning while I am driving in traffic and has nearly caused a rear-end collision on both occasions. It is terrifying and I no longer feel safe driving this vehicle, especially with my child. The same vehicle also has ongoing electrical and drive-power failures (loss of power while driving, repeated stalling in reverse, and complete no-start events) that I have reported separately. Three dealerships have been unable to identify or correct the problems. No crash has occurred yet, but only because the drivers behind me reacted in time. The vehicle is available for inspection.

Filed Jul 14, 2026 · Electrical, Engine · CO

On July 11, 2026, while driving, the vehicle suddenly experienced multiple system failures. The dashboard illuminated with numerous warning lights, including a flashing check engine light, indicating multiple system malfunctions. The vehicle was towed to the dealer due to the severity of the issue. It is currently at the dealership for inspection and diagnosis. I have not yet received a diagnosis or confirmation of the failed component(s) from the dealer. No warning lights, messages, or symptoms appeared prior to the sudden failure. The abrupt illumination of multiple warning lights while driving created a significant safety concern regarding the reliability of critical vehicle systems.