{
 "id": "6th-gen-4runner",
 "vehicle": "6th Gen 4Runner",
 "platform": "4runner",
 "years": "2025–present",
 "covers": "6th generation 4Runner, 2025 and newer, with the 2.4L turbocharged i-FORCE and the i-FORCE MAX hybrid, both with the 8-speed automatic. This is a new platform with little long-term history, so most entries are general symptoms; when the truck is under warranty, the dealer is the right first stop.",
 "updated": "2026-10-15",
 "disclaimer": "General guidance from owner experience. Confirm torque specs, fluid capacities and procedures in the factory service manual. Brakes, steering and anything structural: if in doubt, have a qualified shop inspect it before driving.",
 "systems": [
  "Cooling",
  "Engine",
  "Starting & Charging",
  "Fuel & Ignition",
  "Drivetrain",
  "Steering & Suspension",
  "Brakes",
  "Transmission",
  "Body & Electrical",
  "Hybrid System"
 ],
 "symptoms": [
  {
   "id": "warranty-first-step",
   "title": "Something is wrong on a new 4Runner: warranty, recalls and where to start",
   "system": "Body & Electrical",
   "keywords": [
    "warranty",
    "recall",
    "new 4runner problem",
    "tsb",
    "dealer",
    "2025 4runner",
    "2026 4runner",
    "lemon",
    "software update",
    "open recall"
   ],
   "summary": "On a truck this new, most faults are covered by warranty, and many early fixes are software or bulletin repairs only a dealer can do. Check recalls and document the problem before spending your own money.",
   "checks": [
    {
     "what": "Run your VIN for open recalls",
     "how": "Enter your VIN on NHTSA's recall lookup or Toyota's owner site. Recalls are free to fix, and several early-production campaigns have been software based.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Write down when it happens",
     "how": "Note the date, mileage, speed, temperature, drive mode and whether the engine was cold or warm. Photos or a phone video of warning lights and noises help a service advisor reproduce it.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Ask for a bulletin and software check",
     "how": "Ask the dealer to check for technical service bulletins and calibration updates that match your symptom. Get the visit recorded on a repair order even if they cannot reproduce the fault.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Check warranty terms before DIY",
     "how": "Modifications such as lifts, tunes or aftermarket electronics can complicate warranty coverage. Look at your warranty booklet or ask the dealer before changing anything related to the symptom.",
     "difficulty": "easy",
     "cost": "$"
    }
   ],
   "guides": [],
   "url": "https://toyotadata.com/troubleshooter/6th-gen-4runner/#warranty-first-step"
  },
  {
   "id": "dash-blank-warnings",
   "title": "Digital gauge cluster blank, missing speedometer, or warning lights not showing at startup",
   "system": "Body & Electrical",
   "keywords": [
    "blank dash",
    "instrument panel",
    "digital cluster",
    "no speedometer",
    "cluster blank",
    "gauge cluster",
    "warning lights missing",
    "tpms light",
    "brake warning",
    "screen black"
   ],
   "summary": "An early-production startup software issue with the digital instrument panel has been reported and handled through a recall campaign. If your display drops out, start with the recall lookup and the dealer.",
   "safety": "If the cluster does not show speed, brake warnings or tire pressure indicators, treat it as unsafe to rely on and have it addressed promptly.",
   "checks": [
    {
     "what": "Check the VIN for a cluster recall",
     "how": "Look up your VIN on NHTSA or Toyota's recall page for any instrument panel campaign. If one applies, the fix is a software reflash by the dealer, sometimes over the air.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Power cycle the truck",
     "how": "Shut it off, open and close the driver door, wait a minute or two, then restart. A repeatable blank at startup means you should report it, not just reboot it.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Check the 12 V battery",
     "how": "A weak 12 V battery can make modules reset or boot oddly on a modern truck. Test it before assuming a display fault.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Document it",
     "how": "Take a video of the cluster when the fault shows up so the dealer sees what you saw.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Dealer reprogram or cluster replacement",
     "how": "If a software update does not fix it, the dealer can test the cluster and its wiring under warranty.",
     "difficulty": "hard",
     "cost": "$$$"
    }
   ],
   "guides": [],
   "url": "https://toyotadata.com/troubleshooter/6th-gen-4runner/#dash-blank-warnings"
  },
  {
   "id": "transmission-clunk-first-second",
   "title": "Clunk or abrupt shift, especially 1st to 2nd, or hesitation pulling away",
   "system": "Transmission",
   "keywords": [
    "transmission clunk",
    "harsh shift",
    "1-2 shift",
    "jerky",
    "hesitation",
    "8 speed",
    "shift shock",
    "hard shift",
    "lurch",
    "abrupt shifting"
   ],
   "summary": "Some owners of early trucks describe a firm clunk at the 1-2 shift. It is a reported complaint, and I could not confirm an official fix, so document it and raise it with the dealer.",
   "checks": [
    {
     "what": "Note the conditions",
     "how": "Record whether it happens cold or warm, light or heavy throttle, in which drive mode, and whether the truck is in a hybrid or turbo-only model. Patterns help the dealer.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Try a different drive mode",
     "how": "Compare Normal, Eco and Sport. Throttle mapping changes shift feel, so you can tell a mapping trait from a mechanical fault.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Check for bulletins and calibration updates",
     "how": "Ask the dealer whether a transmission or powertrain calibration update exists for your VIN. Early trucks often get software adjustments.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Rule out mounts and driveline",
     "how": "A clunk when the truck first takes load can also be an engine or transmission mount, driveshaft joint or a loose component. Look for movement or play underneath.",
     "difficulty": "medium",
     "cost": "$$"
    },
    {
     "what": "Fluid level check by the dealer",
     "how": "Leave transmission fluid checks to a dealer or qualified shop, since the procedure is temperature sensitive. Avoid changing the fluid yourself while under warranty.",
     "difficulty": "medium",
     "cost": "$$"
    }
   ],
   "guides": [],
   "url": "https://toyotadata.com/troubleshooter/6th-gen-4runner/#transmission-clunk-first-second"
  },
  {
   "id": "front-brake-squeal",
   "title": "Front brakes squealing or chirping on a new truck",
   "system": "Brakes",
   "keywords": [
    "brake squeal",
    "squeaky brakes",
    "brake noise",
    "front brakes",
    "brake chirp",
    "grinding brakes",
    "pulsing pedal",
    "new truck brake noise",
    "brake dust",
    "pad noise"
   ],
   "summary": "Front brake noise on early trucks has been reported, with a bulletin said to cover it under warranty. Light noise is often pad material settling, but grinding is not normal.",
   "safety": "Metal-on-metal grinding, a soft pedal, fluid loss or a pull under braking needs inspection before you keep driving.",
   "checks": [
    {
     "what": "When does it make noise",
     "how": "Note if it squeals at light braking, only when cold or damp, or all the time. Noise that fades after a few stops is usually surface film.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Ask about a bulletin",
     "how": "Ask the dealer if a brake noise bulletin applies to your VIN. If it does, repairs are normally done under warranty.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Visual pad check",
     "how": "Look through the wheel spokes at pad thickness. A new truck should have plenty, so very thin pads suggest something else is wrong.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Look for debris or stuck hardware",
     "how": "A stone between pad and rotor or a binding slide can make noise. Remove a wheel and check, but avoid changing parts while the warranty applies.",
     "difficulty": "medium",
     "cost": "$"
    },
    {
     "what": "Pulsation or pull",
     "how": "A steering wheel shake only when braking points to rotor condition. Have the dealer measure runout and thickness.",
     "difficulty": "medium",
     "cost": "$$"
    }
   ],
   "guides": [],
   "url": "https://toyotadata.com/troubleshooter/6th-gen-4runner/#front-brake-squeal"
  },
  {
   "id": "hybrid-wont-ready",
   "title": "Hybrid won't go to READY, or dead 12 V battery in the i-FORCE MAX",
   "system": "Hybrid System",
   "keywords": [
    "won't start",
    "no ready",
    "ready light",
    "i-force max",
    "hybrid dead",
    "12v battery",
    "aux battery",
    "jump start",
    "dead truck",
    "hybrid warning"
   ],
   "summary": "On hybrids, the small 12 V battery still powers the computers and has to be healthy before the system will go to READY. Check that first, because it is the cheapest cause.",
   "safety": "Orange high-voltage cables and the hybrid battery can seriously injure or kill. Do not open, probe or cut them. Leave anything beyond the 12 V battery to a trained technician.",
   "checks": [
    {
     "what": "Dashboard behavior",
     "how": "Note whether the cluster lights up, whether the READY indicator appears, and whether any hybrid warning or message shows. A dark dash with no response points at the 12 V system.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Test the 12 V battery",
     "how": "Measure the resting voltage and have it load tested. Around 12.4 V or higher is healthy; low voltage after sitting suggests a drain or a worn battery.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Jump or charge it correctly",
     "how": "Follow the owner's manual for the jump-start points. A low 12 V battery can be jumped or charged, but the high-voltage battery is never part of this.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Check the fob and brake pedal",
     "how": "Press the brake firmly when pressing the power button, and try the fob backup position noted in the manual if the fob battery is weak.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Dealer diagnosis",
     "how": "If it will not go READY with a good 12 V battery, or shows a hybrid system warning, have it towed to a dealer. This is warranty territory.",
     "difficulty": "hard",
     "cost": "$$$"
    }
   ],
   "guides": [],
   "url": "https://toyotadata.com/troubleshooter/6th-gen-4runner/#hybrid-wont-ready"
  },
  {
   "id": "no-start-turbo",
   "title": "Won't start or crank on the 2.4L turbo (non-hybrid)",
   "system": "Starting & Charging",
   "keywords": [
    "no crank",
    "won't start",
    "click",
    "dead battery",
    "crank no start",
    "starter",
    "turbo 4runner won't start",
    "start button",
    "fob battery",
    "no start"
   ],
   "summary": "Start with the basics. A modern push-button truck can refuse to start for a weak battery, a dead fob, or a brake pedal not pressed. A dealer visit is the right path for anything beyond that while under warranty.",
   "checks": [
    {
     "what": "Battery voltage",
     "how": "Resting voltage should be about 12.4 V or more. Below 12 V, charge and test the battery before chasing other causes.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Terminals",
     "how": "Check that the battery terminals are tight and clean. A loose clamp gives a click and no crank.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Fob and brake pedal",
     "how": "Press the brake hard and try the backup fob position in the manual. A weak fob battery is a very common no-start on smart-key trucks.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Look for stored codes",
     "how": "A basic OBD2 reader can show whether the computer logged a fault. Photograph any codes for the dealer.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Dealer diagnosis",
     "how": "A starter, fuel pump or immobilizer fault is a warranty repair on a truck this new.",
     "difficulty": "hard",
     "cost": "$$$"
    }
   ],
   "guides": [],
   "url": "https://toyotadata.com/troubleshooter/6th-gen-4runner/#no-start-turbo"
  },
  {
   "id": "check-engine-light",
   "title": "Check engine light on, with or without a code",
   "system": "Engine",
   "keywords": [
    "check engine light",
    "cel",
    "p0299",
    "underboost",
    "p0171",
    "misfire",
    "p0300",
    "turbo code",
    "mil",
    "engine warning"
   ],
   "summary": "Read the code before anything else. Loose gas caps and recent fuel are common, and anything involving the turbo, direct injection or hybrid system is best handled at the dealer under warranty.",
   "checks": [
    {
     "what": "Gas cap and fueling",
     "how": "Tighten the cap until it clicks. An evap code may clear by itself after several drive cycles.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Read the codes",
     "how": "Use a basic OBD2 reader and write down the exact code and any freeze-frame data. Do not clear it before the dealer has seen it unless you have recorded it.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Is it flashing",
     "how": "A flashing light means active misfire. Reduce power and get it checked soon to protect the catalytic converter.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Note any drivability symptoms",
     "how": "Rough running, power loss or boost issues alongside the light helps the dealer find the cause. Tell them about recent fuel, towing or modifications.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Dealer diagnosis",
     "how": "On a truck under warranty, let the dealer diagnose it. They can check for software updates and have access to Toyota's diagnostics.",
     "difficulty": "hard",
     "cost": "$$$"
    }
   ],
   "guides": [],
   "url": "https://toyotadata.com/troubleshooter/6th-gen-4runner/#check-engine-light"
  },
  {
   "id": "rough-idle-stall",
   "title": "Rough idle, stumbling, hesitation, or stalling",
   "system": "Fuel & Ignition",
   "keywords": [
    "rough idle",
    "stalling",
    "hesitation",
    "stumble",
    "shake at idle",
    "stall at stop",
    "misfire",
    "turbo lag",
    "power loss",
    "engine shudder"
   ],
   "summary": "On a new turbo 4-cylinder, rough running that you can feel is worth recording and taking to the dealer. Fuel quality and a clean air intake are the only DIY checks that make sense.",
   "checks": [
    {
     "what": "Fuel quality",
     "how": "Think back to the last fill-up. Poor or contaminated fuel can cause rough running. Use top-tier fuel and note if the problem improves over the next tank.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Scan for codes",
     "how": "Look for stored misfire or fuel system codes. Note which cylinder if one is named.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Check the air intake",
     "how": "Look at the intake tube and clamps between the air box and turbo for looseness, and check the air filter for blockage.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Look for software updates",
     "how": "Ask the dealer about engine calibration updates that address idle quality or hesitation.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Dealer diagnosis",
     "how": "Ignition, injectors and turbo components are covered by warranty. Do not replace parts yourself.",
     "difficulty": "hard",
     "cost": "$$$"
    }
   ],
   "guides": [],
   "url": "https://toyotadata.com/troubleshooter/6th-gen-4runner/#rough-idle-stall"
  },
  {
   "id": "overheating-coolant",
   "title": "Temperature warning, coolant loss, or coolant smell",
   "system": "Cooling",
   "keywords": [
    "overheating",
    "coolant leak",
    "coolant low",
    "temp warning",
    "running hot",
    "steam",
    "coolant smell",
    "hybrid cooling",
    "reservoir",
    "temperature gauge"
   ],
   "summary": "A new truck should not lose coolant. Treat any loss or warning as a warranty issue, and check only the level and visible leaks yourself.",
   "safety": "Never open the coolant cap on a hot system. Hybrids can have more than one cooling loop. Do not touch orange high-voltage cables.",
   "checks": [
    {
     "what": "Level with the engine cold",
     "how": "Check the reservoir against the min and max marks only when the engine is cold. If it is low, note by how much.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Look under the truck",
     "how": "Look for drips or crusty residue at hoses, the radiator and the water pump area. Take photos for the dealer.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Check the fans",
     "how": "With the A/C on and the truck warm at idle, the radiator fans should run. A fan that never runs is a fault to report.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Do not top off with random coolant",
     "how": "Use only the type the manual specifies. Mixing types can cause problems, and the dealer will want to see the level as you found it.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Dealer pressure test",
     "how": "A pressure test finds slow leaks. On a new truck this is a warranty repair.",
     "difficulty": "hard",
     "cost": "$$$"
    }
   ],
   "guides": [
    {
     "title": "Toyota 4Runner Fluid Capacities & Types (5th Gen & 2025+)",
     "url": "https://toyotadata.com/guides/toyota-4runner-fluid-capacities-and-types-2010-2025/"
    }
   ],
   "url": "https://toyotadata.com/troubleshooter/6th-gen-4runner/#overheating-coolant"
  },
  {
   "id": "highway-vibration-steering",
   "title": "Vibration, steering wheel shake, or pull at highway speed",
   "system": "Steering & Suspension",
   "keywords": [
    "vibration",
    "steering wheel shake",
    "highway shake",
    "pulls to one side",
    "alignment",
    "tire balance",
    "wobble",
    "wander",
    "tire noise",
    "shimmy"
   ],
   "summary": "On newer trucks, vibration often comes from tires and wheels, especially after a tire change or lift. Balance and alignment are the first things to check, and highway vibration has been reported by some early owners.",
   "checks": [
    {
     "what": "Tire pressure",
     "how": "Set all four tires to the pressure on the door placard when cold. An uneven tire pressure can cause pull and a vague feel.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Tire balance and road force",
     "how": "Ask a tire shop for a road force balance. This finds out-of-round tires and wheels that a basic balance misses.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Lug nuts",
     "how": "Check lug nut torque to the manual's specification, in a star pattern.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Alignment",
     "how": "Get an alignment printout. If you changed tire size or the ride height, make sure the shop uses the right specification.",
     "difficulty": "medium",
     "cost": "$$"
    },
    {
     "what": "Dealer inspection",
     "how": "If balance and alignment are correct and the vibration remains, ask the dealer to check wheel bearings, driveline and any open bulletins while under warranty.",
     "difficulty": "medium",
     "cost": "$$"
    }
   ],
   "guides": [
    {
     "title": "Biggest Tires on a Stock 6th Gen Toyota 4Runner: Definitive Fitment Guide (2025+)",
     "url": "https://toyotadata.com/guides/biggest-tires-on-a-stock-6th-gen-toyota-4runner-definitive-fitment-guide-2025/"
    }
   ],
   "url": "https://toyotadata.com/troubleshooter/6th-gen-4runner/#highway-vibration-steering"
  },
  {
   "id": "four-wheel-drive-modes",
   "title": "4WD or drive mode won't engage, warning light, or odd noise on turns",
   "system": "Drivetrain",
   "keywords": [
    "4wd not working",
    "4wd light",
    "4 low",
    "drive mode",
    "transfer case",
    "locking differential",
    "binding turns",
    "traction control light",
    "multi-terrain select",
    "crawl control"
   ],
   "summary": "Check the conditions for engaging first, because 4WD and locker systems have speed and surface limits. Fault lights and failures on a new truck should go to the dealer.",
   "checks": [
    {
     "what": "Follow the engagement procedure",
     "how": "Check the owner's manual for the speed limit and gear for shifting into 4H or 4L. Shifting out of the allowed range can leave a light flashing.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Tire sizes and pressures",
     "how": "Mismatched tire diameters or uneven wear can bind a 4WD system on pavement. Keep the pressures even and rotate on schedule.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Binding in tight turns",
     "how": "If the truck is in 4H or 4L, tight turns on dry pavement can bind the driveline on many 4WD systems. Switch back to 2WD or the on-road mode and see if it clears; check the manual for your trim's drive modes.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Note the warning message",
     "how": "Take a photo of the exact message and the drive mode selected. Messages narrow down which system has the fault.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Dealer diagnosis",
     "how": "Transfer case actuators, sensors and locker systems are warranty items on a new truck.",
     "difficulty": "hard",
     "cost": "$$$"
    }
   ],
   "guides": [],
   "url": "https://toyotadata.com/troubleshooter/6th-gen-4runner/#four-wheel-drive-modes"
  },
  {
   "id": "ac-infotainment-electrical",
   "title": "A/C not cold, infotainment glitches, or random electrical warnings",
   "system": "Body & Electrical",
   "keywords": [
    "ac not cold",
    "infotainment",
    "carplay",
    "android auto",
    "screen freezes",
    "bluetooth",
    "camera not working",
    "electrical",
    "software update",
    "reboot"
   ],
   "summary": "On a new connected truck, many glitches are software and get fixed by an update. Try a restart, then take it to the dealer if it repeats.",
   "checks": [
    {
     "what": "Restart the system",
     "how": "Shut off the truck, open and close the driver door, and restart. Some infotainment and camera faults clear this way, but note if they return.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Phone and cable",
     "how": "Try a different cable and forget and re-pair the phone. Many connection issues come from a bad cable.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Check for software updates",
     "how": "See if Toyota offers an over-the-air or dealer update for the head unit and ask the dealer at your next visit.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "A/C basics",
     "how": "Replace a dirty cabin filter and check that the compressor engages when A/C is on. If the air is warm, the system may be low on refrigerant, which on a new truck suggests a leak.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Dealer diagnosis",
     "how": "Any persistent electrical or A/C fault should be documented and repaired under warranty.",
     "difficulty": "hard",
     "cost": "$$$"
    }
   ],
   "guides": [],
   "url": "https://toyotadata.com/troubleshooter/6th-gen-4runner/#ac-infotainment-electrical"
  },
  {
   "id": "fluid-leak",
   "title": "Fluid leak or drip under the truck",
   "system": "Engine",
   "keywords": [
    "oil leak",
    "fluid leak",
    "drip",
    "puddle",
    "leak under truck",
    "oil spot",
    "coolant puddle",
    "gear oil leak",
    "red fluid",
    "wet underneath"
   ],
   "summary": "A new truck should be dry. Identify what is dripping by color and location, then report it to the dealer.",
   "checks": [
    {
     "what": "Identify the fluid",
     "how": "Slide a white cardboard sheet under the truck overnight. Dark brown or black is usually oil, bright green, pink or orange is coolant, and red or clear-ish thin fluid may be transmission or power steering.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Locate the drip",
     "how": "Measure the drip location from the front bumper and a wheel so you can describe it. Fluids can travel along the underbody before they drop.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Check the levels",
     "how": "Look at the oil dipstick or display and the coolant reservoir. Do not top off without noting how low they were.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Check recent service",
     "how": "A loose drain plug or filter after service can leak. If a shop did the work recently, call them first.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Dealer inspection",
     "how": "Report any leak for warranty repair and ask them to record it even if it is minor.",
     "difficulty": "hard",
     "cost": "$$"
    }
   ],
   "guides": [],
   "url": "https://toyotadata.com/troubleshooter/6th-gen-4runner/#fluid-leak"
  },
  {
   "id": "poor-fuel-economy-power-loss",
   "title": "Poor fuel economy or loss of power, limp mode",
   "system": "Engine",
   "keywords": [
    "bad mpg",
    "fuel economy",
    "power loss",
    "limp mode",
    "reduced power",
    "turbo boost",
    "sluggish",
    "low mpg",
    "hybrid mpg",
    "acceleration"
   ],
   "summary": "Fuel economy varies a lot with tires, load, temperature and driving style, and hybrid and turbo trucks take time to settle in. Reduced power messages are different and need a dealer visit.",
   "checks": [
    {
     "what": "Tire pressure and size",
     "how": "Low pressure and larger or more aggressive tires cut mpg. Check cold pressure to the placard.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Roof racks and cargo",
     "how": "Remove roof racks and extra weight for a test tank. Wind drag has a real effect on a boxy SUV.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Drive mode and habits",
     "how": "Compare Eco and Normal modes and note short trips in the cold. Cold weather and short trips lower mpg, especially on a turbo engine.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Check for codes and warnings",
     "how": "A check engine light or a reduced power message goes with a fault. Record any code.",
     "difficulty": "easy",
     "cost": "$"
    },
    {
     "what": "Dealer diagnosis",
     "how": "If power drops suddenly or you get a reduced power message, bring it to the dealer under warranty.",
     "difficulty": "hard",
     "cost": "$$$"
    }
   ],
   "guides": [],
   "url": "https://toyotadata.com/troubleshooter/6th-gen-4runner/#poor-fuel-economy-power-loss"
  }
 ],
 "source": "https://toyotadata.com/troubleshooter/6th-gen-4runner/",
 "usage": "Checks are ordered: run them top to bottom. difficulty is easy|medium|hard, cost is $ (under ~$50) to $$$ (shop-level job)."
}