The Toyota 4Runner (Japanese: トヨタ・フォーランナー, Toyota Fōran'nā) is a compact, later mid-size sport utility vehicle produced by the Japanese manufacturer Toyota and sold throughout the world from 1984 to present. In Japan, it is known as the Toyota Hilux Surf (Japanese: トヨタ・ハイラックスサーフ, Toyota Hairakkususāfu) which was withdrawn from the market in 2009. The original 4Runner was a compact SUV and little more than a Toyota pickup truck with a fiberglass shell over the bed, but the model has since undergone significant independent development into a cross between a compact and a mid-size SUV. All 4Runners have been built in Japan at Toyota's plant in Tahara, Aichi, or at the Hino Motors (a Toyota subsidiary) plant in Hamura.
For Southeast Asia the Hilux Surf was replaced in 2005 by the similar Fortuner, which is based on the Hilux platform.
As of 2014[update], the 4Runner is sold in the United States, Canada, Central America, Bahamas, Ecuador, Peru, Chile and Colombia.
The 4Runner came in at number five in a 2019 study by iSeeCars.com ranking the longest-lasting vehicles in the US. The 4Runner had 3.9 percent of vehicles over 200,000 miles (320,000 km), according to the study.
The Trekker was one of the first prototype walk through conversions done to Toyota trucks in the early 1980s. They were similar to the successive 4Runner conversions done by Toyota, which started production in 1984, but were designed and built by Winnebago Industries with the approval of Toyota. They were no longer a viable conversion when Toyota started producing the 4Runner in 1984. It was in essence the marketing test vehicle for Toyota to be able to introduce the 4Runner.
The Trekker was produced from early 1981 through 1983. The Trekkers were all built on Toyota short box chassis'. All of the Trekkers were classified as SR5 by both Winnebago and Toyota, regardless of the actual VIN denotation. Originally there were to be a SR5 and Deluxe version of the Trekker, one with vented windows and one without. All 1981 Trekkers had vented canopy windows. Non vented canopy windows were not installed on the Trekker until the 1982 model year. Non vented windows were installed due to the leaking issues of a forward facing vent on the 1981 Trekkers canopy windows rather than the classification of SR5 vs Deluxe.
Toyota shipped all trucks from Japan as cab and chassis in order to avoid the 25% assembled truck customs tax. The trucks destined for production as Trekkers were shipped to the dealership handling the national distribution of the Trekker. From there they went to Winnebago to have the Trekker conversion installed, returned after completion to the dealership for national distribution. Most of the Trekker conversions sold went to the west coast of the United States.
The Trekker conversion consisted of a fiberglass tub, bed sides, a non-removable canopy and rear hatch. The kit included a folding rear seat that could be folded forward to lay flat and add cargo space to the back. There was no tailgate on the Trekkers. The factory Toyota vinyl cab headliner was replaced and matched to the custom rear canopy headliner.
About 1500 of the Trekkers were built and sold in the United States. An additional unknown number of Trekker kits, likely less than 200, were shipped to Canada to be installed on Canadian trucks at the dealerships. 20 to 30 of the Trekker kits were sold and shipped to Saudi Arabia for installation.
For the first generation N60 series Hilux Surf and export specification 4Runner introduced in 1983, Toyota, instead of developing an entirely new model, modified the existing Hilux (N50/N60/N70) with short-bed pickup body. The Hilux had undergone a major redesign in 1983 for the 1984 model year. Changes included the removal of the panel with integrated rear window from behind the front seats, the addition of rear seats, and a removable fiberglass canopy. The implementation was borrowed from both the second generation Ford Bronco, and the Chevrolet K5 Blazer, both short-bed trucks with removable fiberglass shells over the rear sections and having bench seats installed in the back. Like the Bronco and the Blazer, the Hilux Surf/4Runner also did not have a wall attached to the front section behind front seats as the regular Hilux did. In that sense, all three vehicles were not conventional pickup trucks with a fiberglass shell included.
Thus, the first generation is nearly mechanically identical to the Toyota Hilux. All first generation 4Runners had two doors and were indistinguishable from the pickups from the dashboard forward. Nearly all changes were to the latter half of the body; in fact, because the rear springs were not upgraded to bear the additional weight from the rear seats and fiberglass top, these early models tended to suffer from a sagging rear suspension.
In North America, they were sold from the 1984½ model year from May 1984. For this first year (March to July 1984 production), all models were equipped with black or white fiberglass tops. An SR5 trim package was offered that upgraded the interior: additional gauges, better fabrics, and a rear seat were standard with the package. All 1984 models were equipped with the carbureted 2.4 L 22R engine and were all available with a four-wheel-drive system that drove the front wheels through a solid front axle.
1985 (August 1984 production) saw the arrival of the electronically fuel-injected 2.4 L 22R-E (and 22R-EC with California emissions controls) I4 engine. This upped the horsepower numbers from 100 hp for the 22R, to 116 hp for the 22R-E Engine, though the carbureted engine remained available until 1988. Additionally, rear seats were available in all 1985 4Runner trim levels, not just the more upscale SR5.
In 1986, the Surf/4Runner underwent a major front suspension design change as it was changed from a solid front axle to the Hi-Trac independent front suspension. Track width was also increased by three inches. These changes made the trucks more comfortable on-road, and improved stability and handling. The new suspension also increased the space in the engine compartment (necessary to fit larger engines, such as the V6 introduced in 1987) but arguably decreased the truck's off-road capabilities. The North American specification Toyota Pickup also adopted this new suspension, but the regular Hilux for other markets at this point retained the more rugged and capable, if less refined, solid axle configuration. With the 1986 update, the Surf/4Runner grille changed from the three segment type to the two segment grille. Tops were color-matched on blue, red and some gold models, while other body colors were still sold with black or white tops.
A turbocharged version of the 22R-E engine (the 22R-TE) was also introduced in 1986, although this engine is significantly rarer than the base 22R-E. It appears that all turbocharged 4Runner models sold in the US were equipped with an automatic transmission, though a five-speed manual could still be ordered in the turbocharged pickups. Most turbocharged 4Runners were equipped with the SR5 package, and all turbo trucks had as standard a heavier rear differential later used in the V6 model. Low-option models had a small light in the gauge cluster to indicate turbo boost, while more plush vehicles were equipped with an all-digital gauge cluster that included a boost gauge. Turbocharged and naturally aspirated diesel engines were also available in the pickups at this time as well, but it appears that no diesel-powered 4Runners were imported to the United States.
During 1984 to 1986 many 4Runners were imported to the US without rear seats. With only two seats the vehicle could be classified as a truck (rather than a sport vehicle) and could skirt the higher customs duties placed upon sport and pleasure vehicles. Most had aftermarket seats and seat belts added by North American dealers after they were imported.
In 1988, the 22R-E engine was joined by an optional 3.0 L V6 engine, the 3VZ-E. This engine was significantly larger and more powerful although not as reliable as the original 4-cylinder offering. Trucks sold with the V6 engine were equipped with the same heavy duty rear differential that was used in the turbocharged trucks, as well as a completely new transmission and transfer case; the transfer case was chain driven, although considered less rugged, created less cab noise than the old gear-driven unit used behind the four-cylinder engine.
An engine which was not used in the US market and rarely in the Japanese domestic market pickups was the 3Y engine, which was used in place of the 22R engine in New Zealand models, followed more rarely by the 4Y 2.2 petrol in later versions. This was a decision by Toyota New Zealand to reduce parts required to be stocked by dealers as no other Toyotas sold in New Zealand at the time utilised the R series engines.
Small cosmetic and option changes were made in 1988 for the 1989 model year, but the model was left largely untouched in anticipation of the replacement model then undergoing final development.
Toyota issued a second generation of Hilux Surf and 4Runner in 1989 for the 1990 model year. Known as the N120/N130 series, these models continued their reliance on the Hilux pickup as a basis. It represented a fundamental departure from the first generation model. Instead of an enhanced pickup truck with fiberglass cap, the new 4Runners featured a freshly designed, full steel integrated body mounted on the existing frame. However, the 4Runner did remain virtually identical to the Hilux from the B-pillars forward. It also gained an all new coil spring rear suspension system, which unfortunately proved to be just as prone to sagging as the leaf springs on the rear of the previous models.
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