Thomas Dodge Chrysler Jeep of Highland Inc.

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2021 Jeep Grand Cherokee Full-size SUV St John

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The Grand Cherokee L’s air suspension system boasts several enhancements to deliver a smooth, comfortable ride both on- and off-road:

  • The closed loop air suspension system reuses clean air, resulting in improved compressor durability
  • To quickly change vehicle ride height, the Quick Down Leveling (QDL) feature uses an external valve block and secondary air reservoir, which allows for both axles to lower simultaneously compared with single axle lowering in previous generations. QDL enables faster easy entry setting from normal height
  • Electrically controlled, semi-active shocks on Grand Cherokee models equipped with air suspension continuously adjust to road conditions and driving styles to create the optimum ride comfort for all driving situations

For the first time ever on Grand Cherokee, the front axle is bolted directly to the engine to allow for better management of noise, vibration and harshness (NVH) and superior driving dynamics thanks in part to its lower center of gravity. New active/electronic engine mounts absorb more vibration and movement when at idle, but stiffen at higher speeds to optimize ride glide. This is a new feature available on Grand Cherokee and offers a new level of comfort, versatility and performance. An enhanced active noise cancellation system, along with a double-dash body, door seals and acoustic glass round out the enhancements that bring NVH and wind noise down to a whisper.

 

Grand Cherokee’s electric power steering (EPS) has been carefully calibrated to deliver a superior driving feel and consume less energy. The electric motor works with an adaptive engine control unit (ECU) to monitor steering speed, steering wheel angle and vehicle speed. This allows for varying levels of steering assistance to be applied, for example, when more is needed at low speeds, such as maneuvering through a parking lot, or less when at highway speeds, to enhance overall driver confidence. The EPS system uses a variable-rate ratio to improve maneuverability while maintaining on-center stability in all driving conditions.