2008 Toyota 4runner — Known Issues & Recalls

You heard a rattling noise while driving at various speeds. Two independent mechanics inspected your vehicle and found that the frame has rust damage, the top control arm post has melted, and a mounting plate needs replacement. One mechanic warned that the control arm could detach and potentially strike the fuel tank, making the vehicle unsafe to drive. This repair will likely involve replacing the damaged mounting plate and addressing the rusted frame and control arm assembly.

Your 4Runner's frame has extensive corrosion throughout, with a hole longer than 15 inches in the passenger side front frame rail. A Toyota dealership has inspected it and deemed the vehicle unsafe to drive. This is a structural integrity issue that requires professional frame repair or replacement.

Your vehicle's frame has developed significant rust in multiple locations, including critical structural parts like the differential. If left untreated, this rust could damage essential components that affect how your vehicle operates. Addressing this will likely require rust removal and protective treatment or replacement of affected frame sections.

Your 4Runner has developed extensive rust on the frame and body panels. This appears to be a widespread issue affecting multiple 4Runners from this model year. Addressing rust typically involves cleaning affected areas and applying protective coatings or rust treatment products.

Your trailer hitch bent while pulling a small ATV trailer, and inspection revealed the frame is rusted out at the rear crossmember. Toyota declined to cover this rust damage under warranty. The dealer confirmed the rust condition during your last service. If the rusted frame section breaks, it could potentially cause the hitch to separate from the vehicle.

Your 4Runner's frame is developing rust, which appears to happen prematurely on many Toyota vehicles from this era. You may notice that the frame rusts before other parts of the vehicle, and this is common enough that the owner believes it should be subject to a recall. Addressing frame rust typically involves inspection, cleaning, and application of rust-preventative coatings or sealants.

Your car's door lock actuator has failed, which means the power door locks may not work properly. You might find that your doors won't lock or unlock when you use the power lock buttons. The fix will likely involve replacing the faulty door lock actuator mechanism.

Your 4Runner unexpectedly accelerated when you pressed the brake pedal in two separate incidents — once when leaving a parking spot and again at a traffic light — even though the accelerator pedal didn't appear stuck. The second incident resulted in a crash into another vehicle, which then hit a third car, though airbags didn't deploy and only minor injuries were reported. The vehicle wasn't examined or repaired by a dealer to determine the cause.

Your vehicle was involved in a passenger-side collision on August 11, 2024, where both passenger doors were crushed inward and the passenger seat became pinned between the doors and center console. None of the three airbags on the passenger side deployed during the impact, despite the severity of the crash. The airbag failure left you and your passenger without the safety protection these systems are designed to provide.

Your transfer case actuator failed, causing your vehicle to be stuck in neutral instead of park—even though the shifter showed park and you could turn off the engine. This meant your car could roll freely, which is a serious safety hazard. Your mechanic replaced the transfer case with a used unit because Toyota's repair cost exceeded the vehicle's value.

Your 4Runner's subframe and suspension components have become severely corroded, making the vehicle unsafe to drive and unable to pass state inspection. An independent mechanic confirmed that the corrosion is extensive throughout the entire subframe and suspension system. Repairing this issue will likely require replacing the corroded subframe and suspension components, which is a major structural repair.

Your vehicle's check engine light came on because the gas cap wasn't sealing properly. When this happened, your stability control and traction control systems were automatically disabled, which caused your car to lose control on wet roads and prevented it from recovering. A faulty gas cap shouldn't disable your safety systems, but it did in this case. The fix will involve replacing the gas cap and having a mechanic diagnose why the engine disabled stability control over this issue.

Your 4Runner's frame has excessive rust that's making the vehicle unsafe to drive. Rust is eating away at the structural integrity of the vehicle, which affects handling and safety. You'll need professional inspection to assess the extent of the damage and determine what structural repairs or reinforcement are necessary.

While driving at 50 mph, you noticed a burning wire smell and smoke coming from the steering area, but no warning lights appeared on your dashboard. You safely pulled over and waited an hour before restarting the vehicle and driving home. A diagnostic appointment was scheduled at the dealership, but the vehicle was not repaired. The electrical wiring in the steering column may need inspection and replacement to prevent potential fire risk.

Your exhaust manifold is cracking, which allows exhaust fumes to leak into your cabin and may cause dizziness. This is especially concerning in winter when windows are closed and heat is running, or in summer with air conditioning on. The repair will likely involve removing and replacing the cracked exhaust manifold.

Your vehicle is experiencing multiple issues: noises from the undercarriage while driving, a rear door that won't open manually or with the remote, and maintenance and tire warning lights. A mechanic found a split front axle boot, a leaking rear axle bearing and seal that's dripping transmission fluid into your brake system, and rear door lock corrosion. Because transmission fluid is contaminating your brakes, they could fail while driving and will need to be replaced. Repairs will likely involve replacing the damaged brake components, repairing or replacing the leaking axle seals, fixing or replacing the rear door lock mechanism, and addressing the source of the undercarriage noise.

Transmission fluid leaked onto the engine wiring harness and engine computer (ECM), contaminating them and causing the engine to receive false readings. Your engine may run poorly or display warning lights as a result. Repairs will require replacing the transmission internal wiring, engine harness, engine computer, and cleaning other components.

Your 4Runner's frame is experiencing severe rust, particularly at the crossbeams, with metal crumbling when touched. You've already had to replace the muffler and tailpipe because the connections rusted through. The rust is happening much faster than expected for a vehicle with only 150,000 miles, and you're concerned there may not be enough metal left to properly treat it.

Your 4Runner's underbody is experiencing severe rusting throughout, with rust returning to the tailgate even after two body repairs. Multiple components have failed prematurely due to corrosion at just 150,000 miles, including suspension parts, transmission cooling lines, exhaust system, and skid plates. Your brake calipers have failed four times in six years, likely due to rust and corrosion. This will require extensive rust treatment, protective coatings, and replacement of corroded brake and suspension components.

Your front brake calipers may seize up and stick over time, which has happened twice on your 2008 4Runner. You might notice the problem through excessive heat (rotors over 250°F), a burning brake pad smell, or reduced braking power, but there's no warning light to alert you beforehand. The fix typically involves replacing the seized brake calipers.