2014 Jeep Cherokee specifications, comparisons, and safety features
Wheels, steering, and brakes
|Standard Wheels||17x7 Steel||17x7 Al.||18x7||17x7.5|
The 2014 Jeep Cherokee uses electrically power-assisted steering, with computer control — as most new cars do.
|FWD||4x4 I, II||Trailhawk|
|Turning diameter, feet (meters)||37.6 (11.5)||37.7 (11.5)||38.0 (11.6)|
|Steering Turns (lock-to-lock)||2.56||2.56||2.67|
Either engine is equipped with a 160 amp alternator and 600 amp battery (180 amp alternator and 730 amp batteries are optional). The front suspension uses McPherson struts with long-travel coil springs, mounted in a one-piece aluminum sub-frame, with aluminum lower control arms and a standard stabilizer bar. Cherokee uses a four-link rear suspension with trailing arm, aluminum lateral links, isolated high-strength steel rear cradle, coil springs, and a stabilizer bar.
The load floor is 30.9 inches high, the sill step is 18 inches high. The gas tank holds 60 liters (15.9 gallons).
Jeep Cherokees — Specifications 1997 and 2014
The 2014 Cherokee provides more room for passengers, with less cargo space. It is more flexible in the seating / cargo arrangements than the XJ Cherokee, quicker, quieter, and far more efficient, but less capable off-road. (We are using the 1997 version of the XJ because we have relatively complete specifications.)
|Dimension||2014 Jeep Cherokee||1997 Jeep Cherokee|
|Max people+cargo weight||1,000 lb (454 kg)||1,150 lb|
|Towing (no Tow Group; Class II hitch)||2,000 lb (907 kg)|
|Towing, 3.2 (Tow Package; Class III)||4,500 lb (2,041 kg)||5,000 lb|
|Curb weight, 3.2-liter 4x2 *||3,811 (1,729)||3,111 lb|
|Curb weight, 3.2-liter 4x4||4,044 (1,834)||3,153 lb|
|Curb weight, 3.2-liter 4x4 Lock||4,106 (1,862)||3,153 lb|
|Weight distribution||57/43 (4x4, w/two pass.)||53/47|
|Front Head Room w/out Sunroof||39.4 (999.9)||37.8|
|Front Head Room with Sunroof||37.9 (964.5)|
|Front Legroom||41.1 (1,045)||41.4|
|Front Shoulder Room||57.6 (1,462.3)||55.2|
|Front Hip Room||53.8 (1,366.6)|
|Front Seat Travel||8.3 (210)|
|Front Recliner Range (degrees)||6-84 (manual) / 6-61.25 (auto)|
|Front SAE Volume (std roof)||55.98 cu. ft.|
|Rear Head Room||38.5 (978.2)||38.5|
|Rear Legroom||40.3 (1,023.2)||35.0|
|Rear Knee Clearance||3.5 (90.1)|
|Rear Shoulder Room||55.1 (1,399.8)||55.2|
|Rear Hip Room||49.9 (1,268.1)|
|Rear Recliner Range (degrees)||19.25 to 27.25|
|SAE Cargo Volume (cu. ft.)||49.47|
|Cargo Liftover Height||30.9 (785.6) 4x4|
|Min width at liftgate opening||36.1 (916.9) at top of opening|
|Min height at liftgate opening||30.7 (780.0) 4x2|
|Distance between wheelhouses||39.4 (1,000.5)|
|Cargo vol. behind rear seat||24.8 to 29.7 cubic feet
(seat moves fore and aft)
|34 cubic feet|
|Cargo vol. behind front seats||54.9 cubic feet||71 cubic feet|
|Coefficient of drag (cD)||0.51|
|Frontal area||24.5 cubic feet|
|Wheels||17x7, 17x7.5, 18x7||15 x 7|
|Length x width||182 x 73.2 (Trailhawk, 74.9)||167.5 x 68|
|Height||66.2 - 67.8||64.0|
* Curb weight is calculated in pounds (kg) with two passengers and all required fluids.
The nine-speed automatic has a 9.79 ratio spread, with a first gear of 4.70 and a 9th of 0.48; the axle ratios are 3.251 (V6), 3.517 (AWD with towing), 3.734 (2.4 engine), and 4.048 (2.4 AWD wtih towing). The low range ratio is 2.92:1 on AWD systems. Clearance at the front axle is 10.4 inches with the two-speed PTU; 9.7 inches at the locking two-speed rear differential.
How does the four wheel drive / PTU system work?
We will be updating this soon, but in the meantime, this was written before the official launch.
The Cherokee system for four-wheel grip includes AWD, locked 4WD-high, locked 4WD-low, and a rear disconnect with sliding fork engagement (it is built by AAM, according to Automotive News). Bob Sheaves wrote that the patent applications showed it to be similar to the New Venture 242 transfer case, with a 90-degree output to the rear axle. The front-axle differential is separate from the transmission (but possibly inside the transaxle housing), with the bolt on the power takeoff (PTO) box along a split line (near #30 on the following diagram), separating it from the main housing. Not shown on the diagram, because it is a “flattened view,” are the two front halfshafts, which are splined to the front-differential side gears. Note: Chrysler refers to the PTO and associated gearing as a PTU, or Power Transfer Unit.
To the left of #30 on the diagram, everything would be common, enclosed components with the 2WD transaxle and case. To the right of #30, everything is enclosed in the PTO housing.
The diagram shows why a special gear reduction is needed, and why there is no need for a neutral position in the PTO housing, which is only used to disconnect the drive line (to use the PTO). The planetary gearset provides the main reduction. Locking the ring gear to the sun gear gives a 1:1 ratio to both differentials. Locking the rear gear or planetary gears so they’re stationary gives a reduction ratio.
Mr. Sheaves pointed out, “With the range select ahead of the AWD differential, the differential can be smaller, lighter, and less expensive than if placed downstream from the splitter. The faster you spin the interaxle propshaft, due to multiple reduction stages, ... the more vibration you incur due to mismatch of joint angularity caused by movement of the axles (since they do not move up and down and are rubber mounted to the body) relative to each other, forcing the need of a multiple jointed propshaft with additional carrier bearings to shorten the span and stay below each individual shaft's critical speed. ... You don't design a component without considering the effect on the system.
“One thing missing from both designs is a torque proportioning differential in both axles and between the axles in the transfer gearing. It can be done, but not in the shown differential housings or PTO. This would be more important to provide a biased system, as you want in high performance cars.”
The 2014 Jeep Cherokee is loaded with safety systems, including ten standard airbags and Chrysler’s own lane-change and rear cross path alerts. New features are a parking assistance system, a new adaptive cruise control, a new lane departure warning, and a new forward collision warning system.
Standard and optional features include:
- Assist Call: Mirror-mounted buttons for emergency services, roadside assistance, customer service, and non-collision emergencies
- Adaptive Cruise Control-Plus can bring the vehicle to a full stop without driver intervention under certain conditions; normally it provides a distance-based cruise control, using forward sensors.
- Adaptive headlamps aim light in the direction of the turned steering wheel, helping illuminate the road in a curve/turn
- All-row full-length side-curtain air bags extend protection to all outboard front- and rear-seat passengers. Each side air bag has its own impact sensor that autonomously triggers the air bag on the side where an impact occurs. They are in the headliner just above the side windows.
- Anti-lock brakes detect rough roads by the oscillations in the wheel speed signals; when rough roads or off-road driving is detected, ABS holds the brake pressure for longer pulses
- Auto-dimming driver’s side and rear-view mirrors
- Automatic headlamps and automatic high-beam headlamps
- Blind-spot Monitoring (BSM): Uses dual radar sensors to notify the driver of vehicle(s) in their blind spot via lights on the side-view mirror and/or a chime.
- In an emergency brake situation, the system applies maximum braking power (based on research that in many accidents, at least one driver didn’t hit the brakes with full force). The brake-throttle override cuts engine-power output until the vehicle stops or the driver lifts their foot from the brakes, to prevent runaways.
- The brake-lock differential system allows forward motion if one or two wheels lose traction, by selectively and aggressively applying brakes to the spinning wheels. Brake traction-control system keeps driving wheels from spinning during acceleration by applying individual brakes to the slipping wheel(s). Electronic brake-force distribution regulates braking pressure, front-to-rear.
- Electric parking brakes use a motor on each caliper; it has four operations, static apply and release, dynamic apply, drive away release and safe hold.
- Electronic locking fuel filler doors prevent theft or tampering.
- Electronic stability control with roll prevention
- Enhanced Accident Response System (EARS): makes it easier for emergency personnel to see and reach occupants in the event of an accident by turning on the interior lighting and unlocking doors after air bag deployment. It also shuts off flow of fuel to the engine.
- Forward Collision Warning-Plus uses radar and video sensors to detect whether the Cherokee is approaching another vehicle or large obstacle in its path too rapidly, and warns or helps the driver to avoid the incident (video sensors are new to the system).
- Front seat-belt adaptive/active load limiters optimize chest loading in an impact event, while impact sensors cause front seat-belt pretensioners to remove slack in an accident.
- Hill-start Assist (HSA) keeps the brakes on briefly, after the driver’s foot is moved from the pedal, to easily allow “non rollback” on hills.
- Lane Departure Warning-Plus leverages electronic power steering (EPS) to deliver a torque-input to alert and assist the driver with corrective action.
- LED tail-lamps activate instantly and grab attention more readily than traditional bulbs.
- ParkSense Parallel/Perpendicular Park Assist uses parking sensors to guide customers into parking spaces, automatically controlling the steering angle; the driver controls the gear, brake, and accelerator. Parallel parking is possible on either side of the car.
- Front and rear park assist systems with stop and release uses ultrasonic sensors at low speeds in reverse, to detect stationary objects. If a collision is imminent, the system will hit the brakes to jerk the car, then release. At speeds below 7 kp/h (4 mph), the system will bring the vehicle to a stop before releasing.
- Rain Brake Support occasionally pushes the brake pads lightly against brake rotors in rainy conditions, to keep rotors dry.
- Rain-sensing wipers
- Reactive head restraints deploy in the event of a rear collision, minimizing the gap between the head restraint and the passenger’s head.
- Ready Alert Braking moves the brake pads closer to the rotors to allow faster braking when a collision is imminent.
- Rear Cross Path (RCP) detection warns drivers backing out of parking spaces when traffic is moving towards their vehicle.
- Supplemental turn signals in the exterior mirrors can be viewed from the front, sides, and rear
- Tilt-and-telescoping steering column with memory
- Trailer-sway control
|Engine||Pentastar V6||TigerShark Four||Fiat 2.0 MultiJet Diesel|
|Type||60-degree V-type, 198 cid||Inline four-cylinder, 144 cid||Diesel, in-line four|
variable cam phasing
|SOHC, 16 valves, MultiAir VVT||DOHC|
|Horsepower||271 hp (199 kW) @ 6,500 rpm||184 hp (137 kW) @ 6,250 rpm||170 @ 4,000 (125 kW)|
|Torque||239 lb.-ft. (316 Nm) @ 4,400||171 lb.-ft. (232 Nm) @ 4,800||258 lb-ft (350 Nm) @ 1,750|
|Redline||6,500 rpm||6,500 rpm||>4000 rpm|
|Fuel||Regular (87)||Regular (87)||Low-sulfur diesel|
|Oil / coolant||6.0 qt. (5.7 liter); 9.7 qt. (9.2 liter)||5.5 qt. / 5.2 liter; 7.1 qt. / 6.7 liter|