The 2009 Toyota 4Runner is a midsize SUV built with a truck-based body-on-frame design, making it a strong choice for drivers who want real towing capability and off-road confidence rather than a car-like crossover feel. It sits in the fourth generation (2003–2009), and for 2009 it represents the final model year before the 2010 redesign. Ideal buyers include families needing durability, outdoors-focused owners, and anyone who values long-term dependability and resale value. In the used SUV market, the 2009 4Runner is often compared with the Jeep Grand Cherokee, Nissan Pathfinder, and Honda Pilot, but it stands out for ruggedness and proven drivetrain longevity.

- Proven 4.0L V6 powertrain: Most 2009 4Runners use Toyota’s 4.0L V6 (1GR-FE) paired with a 5-speed automatic transmission, known for strong low-end torque and long service life when maintained. - Optional V8 availability: Many trims offered an available 4.7L V8 (2UZ-FE) with a 5-speed automatic, a favorite for towing and smooth highway power. - Serious 4WD capability: Available part-time or full-time 4WD (depending on configuration), with features like a two-speed transfer case on 4WD models and available traction aids depending on trim. - Real towing and utility: A body-on-frame chassis and available towing equipment make the 4Runner a practical choice for boats, small campers, and utility trailers. - Spacious, durable interior layout: A tall seating position, practical cargo space, and straightforward controls cater to owners who prioritize function over flashy tech.

Searching “2009 Toyota 4Runner reliability” often brings up a consistent theme: the drivetrain is typically very durable, but age-related issues and a few known weak points can show up. 1) Rust on frame and underbody components: In rust-prone states, owners commonly report corrosion on the frame, rear suspension mounts, brake lines, and hardware. This can become a serious safety and inspection issue, especially on vehicles with many winters or poor undercarriage care. Always check thoroughly underneath. 2) Exhaust manifold/header leaks (often 120,000–200,000 miles): A ticking sound on cold start can point to an exhaust manifold leak, more commonly reported on higher-mileage trucks. Repairs can range from replacing gaskets to replacing manifolds, and labor can be significant due to access. 3) Brake system wear and caliper issues: Some owners report uneven brake wear, sticking calipers, or a soft pedal feel as the vehicle ages. This isn’t unique to the 4Runner, but it’s a frequent “2009 Toyota 4Runner problems” search topic because it can lead to warped rotors or reduced braking performance if ignored. 4) 4WD actuator/transfer case engagement concerns: On 4WD models that rarely use 4HI/4LO, the actuator can become reluctant to engage. It often shows up as flashing 4WD lights or delayed engagement, typically on older vehicles where the system hasn’t been exercised regularly.