Owners and prospective buyers of the 2012 Acura TL with the SH-AWD system often cite a blend of engaging dynamics and luxury comfort as key reasons for their interest. This model year represents the peak of the seventh-generation TL's run, combining a refined 3.5-liter V6 with Acura's sophisticated torque-vectoring all-wheel drive. Understanding the 2012 Acura TL SH-AWD reliability requires looking at the specific engineering of the powertrain, the inherent strengths of the chassis, and the long-term durability of the electronics that manage the system.
Mechanical Foundations and Powertrain Longevity
The heart of the 2012 TL is the 3.5-liter J35Z2 V6, a robust unit that delivers 290 horsepower and 267 lb-ft of torque. When paired with the six-speed automatic transmission, this powertrain forms a reliable core that, with proper maintenance, can easily last well over 200,000 miles. The foundation of the SH-AWD system lies in the rear differential, which houses the hydraulic pump and planetary gear set that distributes torque to the front wheels. This purely mechanical setup, lacking complex clutches found in some competitors, contributes significantly to the 2012 Acura TL SH-AWD reliability, as there are fewer electronic components to fail in the drivetrain itself.
Suspension and Steering Durability
Handling the power and maintaining composure on various road surfaces falls to the multi-link front suspension and independent rear multilink setup. The 2012 model benefits from revised damping characteristics that improved ride quality without sacrificing the firm, engaging feel Acura is known for. While the bushings and struts are subject to wear over time, the overall design is proven and generally resistant to premature failure. Steering feel is precise, thanks to a rack-and-pinion system that inspires confidence; however, the power steering pump and associated hoses should be inspected periodically for signs of leaks, a common wear item on higher-mileage vehicles.
SH-AWD System Specifics and Maintenance
The real differentiator for this model is the Super Handling All-Wheel Drive system, which actively manages torque distribution between the front and rear wheels, and between the left and right rear wheels. This system is managed by the rear differential's hydraulic pump, which uses a special Honda-brand automatic transmission fluid (HCF-2). Regular fluid changes at the recommended intervals are critical for the long-term health of the multi-plate clutch packs within the rear differential. Neglecting this specific fluid service is a primary factor that can lead to premature 2012 Acura TL SH-AWD reliability issues, such as hesitation or electronic codes related to the system.
