|  |  | | The combination of A-LSD and Vehicle Stability Control (VSC) as standard equipment on every model is a significant first in the segment. In contrast, some competitors restrict these important safety systems to certain models. Toyota Tundra's VSC system integrates traction control (TRAC) on all models, and enhances traction on or off-road by helping to keep the vehicle going on its intended course. VSC detects front-wheel slide and rear-wheel slide during cornering and attempts to control either condition with throttle intervention and/or by braking individual wheels.
The integration of these technologies also brings with it driver-selectable versatility to tackle just about any road surface or driving condition. "Normal" mode enables all traction and stability capability. "TRAC Off" activates A-LSD, to help extricate the Tundra from extreme conditions. The "VSC Off" mode turns off all of these systems.
4x4 Capability
The combination of A-LSD and VSC gives the two-wheel drive Tundra models far better traction in more situations than could once be expected from a pickup truck. For more demanding conditions, Tundra's 4x4 configurations offer a part-time, shift-on-the fly four-wheel drive system featuring a six-pinion planetary reduction gearset to provide HIGH and LOW ranges. The driver selects the drive mode using a dial on the dash.
The V6 and i-Force 4.7 V8 Tundra models' rear differential uses a 9.5-inch ring gear, and the i-Force 5.7 models step up to a 10.5-inch ring gear - one of the largest in the segment. All Tundra differentials are made using new machining technology: "face hob" gear cutting for ring and pinion gears yields stronger tooth form and a greater engagement area for increased torque capacity and reduced gear noise.
Toyota Tundra Safety
On the safety front, all Tundra models feature the STAR safety system as standard equipment. As a result, Tundra will offer one of the most comprehensive suite of standard safety equipment in the full-size pickup market. The STAR safety system found on all of Toyota's SUVs includes ABS, Electronic Brakeforce Distribution (EBD), Brake Assist, Vehicle Stability Control (VSC) and Traction Control (TRAC). Tundra is the first full-size pickup to feature standard front and rear seat side and roll-sensing side curtain airbags in all models. Three-point seatbelts and adjustable headrests for all seating positions are likewise firsts in the segment. The front seatbelts integrate pretensioners and force limiters.
Towing Capability
The optional Tow Package for Toyota Tundra i-Force V8 models increases towing capacity significantly, up to 10,800 pounds, depending on the model and drivetrain (see specification sheet). The Tow Package is available on all V8 models and is standard on Double Cab Long-Bed models.
The Tow Package starts with a one-piece hydro-formed towing receiver integrated into the frame prior to bed installation. The structure attaches to each side of the frame around the rear spring shackles' frame cross-member with 12 bolts. Tow Package rear springs provide increased full-load rear suspension height and maintain full range of suspension travel. The Tundra stays level even with 1,000 lbs. of tongue weight or payload.
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