2023 Toyota Tundra Electrical Problems

After starting your 2023 Toyota Tundra and turning on the seat heaters and window defrosters, you noticed a burning smell that got stronger quickly. Within 200 feet of driving, you saw smoke coming from under the hood and discovered an electrical fire in the engine compartment. You used a fire extinguisher to put it out and disconnected the battery. The main fuse and relay box and other electrical components in the engine bay were damaged. This happened during normal driving with no crash involved.

Your engine check light came on and your truck stalled twice while driving in traffic, forcing you to pull over both times. When you restarted it, the engine sounded rough with knocking sounds, even at idle. You've received a recall notice stating that machining debris left in the engine during production can cause engine knocking, rough running, stalling, and loss of power — all of which your truck is experiencing. This issue requires Toyota to inspect and service your engine to remove any debris and restore proper operation.

Your engine suddenly lost oil pressure and failed at 34,500 miles while accelerating from a stop light, causing multiple warning lights to illuminate and forcing you to limp home at reduced speed. Inspection revealed metal shavings in the oil and oil filter, with the filter having detached during the incident, indicating severe internal engine damage. The rapid oil leak created a road hazard and put you and other drivers at risk. The dealership confirmed low oil pressure codes and noted the oil was highly metallic, suggesting possible internal component failure.

Shortly after leaving a scheduled 45,000-mile service, your truck began shaking and losing power. The engine stalled, dashboard warning messages appeared, and smoke followed by flames emerged from under the hood on the passenger side, resulting in a complete vehicle fire. Multiple parties including Toyota, the dealership, insurance, and fire investigators have inspected the vehicle, though the root cause remains under investigation. The repair will likely require a complete engine replacement or rebuild, along with comprehensive electrical system diagnosis.

Your tailgate opens on its own while driving on the highway, creating a safety risk if cargo spills. You're experiencing multiple electrical issues including dashboard gauges freezing and requiring a restart, a malfunctioning gas gauge, and a compass that flips direction. The transmission rapidly disengages and reengages at cruising speed, the engine periodically accelerates hard when in Park, and you feel vibration with engine pulsing when climbing hills. Back door locks malfunction and occasionally won't unlock, requiring you to manually unlock from inside. The jack bent when attempting to change a flat tire, the rearview mirror malfunctions regularly, your driver's seat is cracked, door trim fell off and uses unreliable adhesive, and the truck's software updates are opening your garage door. These issues will likely require multiple repairs addressing the tailgate latch mechanism, electrical system diagnostics, transmission control module programming, door lock actuators, and various hardware replacements.

Your Toyota Tundra's rear tailgate can unexpectedly open while driving if you accidentally press the key fob, which could cause cargo to fall out onto the road and create a safety hazard. This unintended opening poses a risk to you, your passengers, and other drivers. The tailgate latch or electronic release system may need to be inspected or repaired to prevent accidental opening while the vehicle is in motion.

Your Tundra's 14-inch infotainment screen has stopped working completely — it won't turn on, respond to touch, or reset even after the dealership disconnected and reconnected the battery. Since many of your truck's safety features like lane departure warning and back-over prevention are controlled through this screen, the vehicle may be unsafe to drive until it's fixed. The dealership hasn't been able to diagnose or repair the issue yet. The fix will likely require replacing the infotainment display unit or its internal components.

While merging onto a highway, your truck lost power and wouldn't accelerate above 50 mph. Multiple warning lights appeared on the dashboard indicating power loss, hybrid system failure, and what appears to be a parking system failure. You were able to turn on hazards and reach safety, but this sudden power loss during highway merging is a serious safety concern, especially in heavy traffic.

Your truck has two open recalls: one from November 2025 for a safety-related engine replacement that Toyota hasn't yet provided a fix for, and another from February 2025 for reverse lights that also remain unavailable. You'll need to contact Toyota to schedule service once replacement parts become available.

Your new truck has debris found in the engine, which poses a risk of engine damage or failure. With only 18,000 miles on the vehicle, you're concerned about putting your family at risk and want the vehicle replaced or bought back. The issue likely requires engine inspection and debris removal to ensure the engine is clean and safe to operate.

Your truck has a significant delay when you press the gas pedal. Sometimes it hesitates or doesn't respond right away, and you may feel jerky acceleration. This could be caused by issues with the throttle system, engine sensors, or electronic controls that manage engine performance.

Your vehicle's electrical system and service brakes may not be functioning properly. The specific details of this issue are documented in an attached report. A diagnostic inspection of both the electrical system and brake components will likely be needed to identify and repair the problem.

Your fuel gauge may randomly reset to full even when your tank isn't full, or fail to update to full after you fill up the tank. When this happens, you'll need to manually reset your vehicle's computer to get an accurate fuel reading. This creates a safety risk because you could run out of fuel if the gauge is showing more fuel than you actually have.

You were notified of a safety recall in April 2023 for an electrical/fuel system issue, and again in August 2023 for what the dealer said was a different recall on the same part. As of October 2024, neither recall fix has been installed on your vehicle, despite multiple service visits where you believed the problem was addressed.

Your fuel gauge is displaying a full tank even after you've driven 120 miles, which means the gauge reading doesn't match how much fuel you've actually used. This could leave you stranded if you rely on the gauge to know when to refuel. The issue likely involves a faulty fuel level sensor or a wiring problem in the fuel gauge system.

Your truck's cameras for parking and lane departure warning system stop working when it rains, causing the display screen to turn green and glitch. The system recovers on its own the next day, but this has happened three times now. This appears to be a water intrusion or moisture-related issue affecting the camera system during wet weather.

Your fuel gauge randomly resets to show a full tank even when it isn't, which creates a safety risk—you could run out of gas unexpectedly while driving in traffic because the gauge is showing incorrect information. This problem has been reported on multiple trucks of this model year. Fixing this will likely involve diagnosing the fuel gauge sender unit or the instrument cluster display.

Your truck's alternator stopped working, causing multiple fault warnings to appear on your dashboard while driving. This happened at just 3 months old, so you took it to the dealership for service. The alternator needs to be replaced to restore proper electrical charging and prevent the battery from draining.

Your truck's touchscreen keeps going black and freezing even after the recall service was completed. The back seat power outlet doesn't work, and recently the grille shutter and parking brake system malfunctioned and required repairs. You're frustrated that the dealership can't provide a loaner vehicle while these issues are being addressed.

The display on the speedometer stops working and turn off completely and die, you lose all lane departure and speedometer, car tenperature, etc etc, you can’t drive it since you dont know the speed you’re going, and all the functions for radars, etc. even turn it off and on multiple times I got stranded at work, the truck has 500 miles only…

Your truck produces a foul or musty smell from the air conditioning system whenever it rains, even though your HVAC settings remain the same. Two dealerships have been unable to reproduce the issue during service visits. The smell only appears during rainy weather, making it difficult to diagnose and repair while still under warranty. Fixing this will likely involve inspecting the HVAC evaporator core and drainage system for moisture accumulation or mold growth.

Your truck hesitates when you shift from Reverse to Drive or from Park to Drive. This means there's a noticeable delay or stumble in acceleration right after you make the gear change. The issue appears to involve the electrical system and engine speed control working together. A technician will likely need to diagnose the transmission shift timing and engine response sensors.

Your radio's volume knob broke, and the audio became stuck at a loud volume. This makes it difficult to hear emergency vehicles or concentrate while driving and navigating traffic. The fix will likely involve replacing the radio unit or having the volume control mechanism repaired.

The contact owns a 2023 Toyota Tundra. The contact stated that upon refueling the vehicle, the fuel gauge failed to operate as needed. The contact stated that the fuel gauge remained on FULL despite driving for a significant number of miles after the fill-up.

Your fuel gauge randomly resets to show a full tank even when you actually have only half a tank of gas. This can make it difficult to know how much fuel you really have, potentially leaving you stranded if you rely on the gauge. The issue likely involves the fuel gauge sender unit or the instrument cluster and may need diagnostic testing to pinpoint the exact cause.

No complaint text was provided in the submission. The owner referenced an attached document, but the actual details of the electrical system issue are not available in the information given.