2010 Toyota 4Runner Trail Grade Full Test: www.insideline.com Climbing up the near-vertical dirt trail in the all-new 2010 Toyota 4Runner Trail Grade seems pretty easy, at least until we get to the hill-climb's crest. The trail is actually too steep to walk up and the front tire on the driver side starts losing traction and the front end begins to slide off the trail toward a drop-off that borders each side of the incline. After stopping the SUV on the hill's face (and taking a few deep breaths), we engage the push-button Crawl Control on its most aggressive setting, grab on tight to the steering wheel and take our foot completely off the brake. This allows the Crawl Control to modulate throttle and traction control at each wheel to maximize grip up the hill at a slow and controlled pace, allowing us to just focus on steering away from the cliff's edge. A few short moments later, we crest the trail's lip with ease.
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