Driving the vehicle over 5 mph (8 km/h) will return. Close the trunk. During normal operation, there are five level achieved messages that correspond to the five unique air suspension system heights or modes. The ASU valve block provides six color-coded pneumatic connections to the system. This is normal. What is the best used 3rd row SUV to buy? Quadra-Lift is a closed system so adjustments are much faster than other systems that must draw in or exhaust air for operation. By working with pre-pressurized air, the closed air suspension system also provides additional benefits to the customer: A significantly greater number of repeated lifts without lift time deterioration, System performance that is unaffected at higher altitudes when compared to an open type air suspension. When. A smoother and more comfortable ride will result. The Lincoln Town Car comes with an air-suspension system known as "Air Ride." This is normal and should not require service. To assist with changing a spare tire, the Quadra-Lift air suspension system has a feature which allows the automatic leveling to be disabled. The front springs are a modular spring-over-shock design, very similar to a coil-over-shock design. The ASUs main function is to pressurize and move air that is already there. Push the trunk release switch located on the bottom part of the driver-side door panel. An audible chime will be heard whenever a system error has been detected. The EVIC displays and the LED status changes on the air suspension switch. A message appears in the EVIC indicating that the Quadra-Lift system has been disabled. If the road test indicates the system is not operating as designed, the wiTECH scan tool application is used to interrogate the air suspension control module. How do I find the previous value of my car? This position should be the default position for all off-road driving until OR2 is needed. Excessive air supply unittemperature also disables the air suspension system until the compressor cools down to safe operating levels. There seems to be a problem serving the request at this time, {"modules":["unloadOptimization","bandwidthDetection"],"unloadOptimization":{"browsers":{"Firefox":true,"Chrome":true}},"bandwidthDetection":{"url":"https://ir.ebaystatic.com/cr/v/c1/thirtysevens.jpg","maxViews":4,"imgSize":37,"expiry":300000,"timeout":250}}, The following parts fit a 2011 Jeep Grand Cherokee. It actuates the compressor and valve block, moving air from the reservoir to the rear axle air springs. If a door is opened at any time while the vehicle is lowering the change will not be completed until the open door(s) is closed. Disconnect the positive battery cable for 5 minutes. To exit Park Mode, press the Up button once while in Park Mode or drive the vehicle over 15 mph (24 km/h). The Quadra-Lift air suspension system uses a lifting and lowering pattern which keeps the headlights from incorrectly shining into oncoming traffic. Required fields are marked *. The system also continually monitors passenger, cargo and trailer tongue weight and adjusts the air suspension automatically, to maintain a level ride. It can function independent of the Selec-Terrain system according to driver selection. For complete diagnostics information, procedures and safety warnings consult the factory service manual. This can occur with large changes in ambient air temperature or if service has been done on the system and lost air has not been replaced. How to Reset a Low Pressure Light in a How to Override the Security System on How to Program Keyless Entry Remotes in How to Reset the Maintenance Light on a How to Reset the Check Engine Light in Chris Hondros/Getty Images News/Getty Images, Copyright 2022 Leaf Group Ltd. / Leaf Group Media, 2011 Lincoln Town Car Owner's Manual (PDF). The nitrogen must be Purity Class 5 (99.999% pure). The first step in diagnosing air suspension system concerns is to cycle the system through its modes during a road test, while monitoring the EVIC for feedback. To enter OR2, press the Up button twice from the NRH position or once from the OR1 position while vehicle speed is below 20 mph (32 km/h). View cart for details. The air suspension control module (ASCM) contains the logic that controls ride height during all driving and loading conditions. There are times when the system will need to make up a significant amount of air. The vehicle will enter Aero Mode, regardless of vehicle speed if the Selec-Terrain knob is turned to the SPORT position. The LED status changes and the EVIC message Off Road ride height Level 2 is displayed. The ASU also contains an intake / exhaust assembly with filter, onboard desiccant, a reversing valve, a temperature sensor, and a pressure sensor. This position also provides the best approach, departure, and breakover angles. Rock Off-road calibration only available in 4WD Low range. Pressurized air is moved between the reservoir and the springs by way of an air supply unit (ASU). On vehicles equipped with Auto Entry/Exit Suspension mode, the feature can be turned on or off via Customer Programmable Features on the radio. The 4 indicator lamps will illuminate to show the current position of the vehicle. When did Detroit Grand Prix move to Belle Isle? Refer to Selec-Terrain in Starting and Operating for further information. Using the front axle height sensors, the system determines the front axle is at the correct intermediate height. Four connections distribute or retrieve air from each of the air springs. flashing indicator lamp is the position the system is working to achieve. Additionally, there are several inputs to the air suspension control module that prevent the air suspension system from changing modes. If doors are open when the user requests to lower the vehicle, a message displays and the air suspension does not lower until the doors are closed. Using height sensors, the system determines the vehicle needs to be raised in order to achieve the proper height at the four suspension corners. the vehicle, the rear of the vehicle will move up first and then the front. The feature controls, are located in the radio screen. When in the OR1 position, if the vehicle speed remains between 40 mph (64 km/h) and 50 mph (80 km/h) for greater than 20 seconds or if the vehicle speed exceeds 50 mph (80 km/h), the vehicle will be automatically lowered to NRH. A message will be displayed on the EVIC indicating the compressor is cooling down and there will be a diagnostic trouble code (DTC) set. The size and volume of the nitrogen supply tank will determine how many air suspension systems can be filled. And finally, depending on the severity of the failure, one of two messages displays if a fault is detected by the air suspension control module. Flashing indicator lamps will show a position which the system is working to, achieve. If you are experiencing problems with the air-suspension system, consider resetting it by turning it off, then back on. Using the front axle height sensors, the system determines the front axle is at the correct final height and leveling is complete. The ASCM controls the ASU compressor and valve block, and is influenced by many other modules and systems. This position provides a good balance between ground clearance and ride comfort. Inspect the trunk lining on the driver side. The scan tool is also needed to prepare the system for service or to adjust system settings after a repair has been made. Push the switch the "On" to turn the air-suspension system back on. The Quadra-Lift system features five height settings for optimum ride performance, each with its own benefits. Did we miss anything? While in OR2, if the vehicle speed exceeds 25 mph (40 km/h) the vehicle height will be automatically lowered to OR1. If the air suspension system is fully depleted of air it can be refilled using a scan tool and Air Suspension Refill Tool 10247 which is used with a nitrogen supply tank (can be acquired at a local gas supplier). Test the Quadra Lift system by changing the ride height. 1 product ratings - Fits Jeep Grand Cherokee SRS Module Reset Service Light Fix - 24HR! Since the systems compressor is working with pre-pressurized air, and not air at atmospheric pressure, the compressor can be smaller which translates into reduced power consumption and weight as well as improved NVH characteristics. Shut down your Lincoln Town Car. Push the switch to "Off" to shut down the Town Car's air-suspension system. Rear springs are stand-alone springs that are not incorporated with the shock absorber. This motion controls the angle the headlights are projected by controlling the pitch of the vehicle, keeping them from going above their normal projection plane. Leonardo R. Grabkowski has been writing professionally for more than four years. Welcome to the JeepSpecs.com in-depth page on the WK2 Jeep Grand Cherokee Quadra-lift air suspension system. The powertrain control module (PCM), anti-lock brake system (ABS) control module, cabin compartment node (CCN), and drivetrain control module (DTCM) are all primary inputs to the ASCM. The system requires that the engine be running for all changes. Over time, the air bags that level out the system may fail and require replacement. If it does not, you may have further problems with the system that require the assistance of a dealer. Insert all the fuses you just pulled out. Lowers the vehicle just over a half inch to maximize aerodynamics and fuel economy at highway speeds. Your email address will not be published. Press the Apps soft-key, then press the Settings soft-key to display the menu setting screen. higher or lower from the current position, assuming all conditions are met (i.e.. engine running and all doors and liftgate closed). The raising or lowering icon appears when the system changes from mode to mode. The ASU consists of an air compressor and a valve block assembly that is plumbed to the springs with a network of lines. Grabkowski attended college in Oregon. Your email address will not be published. Front and rear height sensors measure the distance between the body and suspension, and provide feedback to the control system to constantly monitor vehicle height. What is the name of the Cadillac pickup truck? It is the first SUV to use the latest air suspension technology utilizing a closed type design. 1 product ratings - 2011 JEEP GRAND CHEROKEE DODGE DURANGO 3.6L ECM ELECTRONIC CONTROL MODULE, Other Starters, Alternators, ECUs & Wiring. When lowering the vehicle, the front will move down first and then the rear. If the vehicle speed remains between 15 mph (24 km/h) and 25 mph (40 km/h) for greater than 60 seconds, or the vehicle speed exceeds 25 mph (40 km/h) the Park Mode change will be cancelled. Many routines are helpful tools that can make diagnosing Quadra-Lift suspension concerns easier. What is the best model of Dodge Grand Caravan? The system is correcting the position of the vehicle to ensure a proper appearance. It offers 8.1 inches of clearance and provides the most comfortable balance of ride and handling. The aerodynamic ride height message displays. After the engine is turned off, you may notice that the air suspension system, operates briefly. Refer to Electronic Vehicle Information Center (EVIC) in Understanding Your Instrument Panel for further information. Step to the rear of the vehicle and open the trunk. During lifting the vehicle will always raise the rear of the vehicle before raising the front of the vehicle and during lowering the vehicle will always lower the front of the vehicle before lowering the rear of the vehicle. Provides 1.3 extra inches (9.4 inches of clearance) for off-roading, but allows a bit more suspension comfort. One connection is the inlet from the compressor, and the last connection exhausts the system. Press and hold both the Up and Down buttons simultaneously between 5 and 10 seconds, a message will appear in the EVIC stating leveling has been disabled immediately after both buttons have been released. Once the vehicle speed goes below 15 mph (24 km/h) the vehicle height will begin to lower. If the EVIC message and DTC occurs often, it may be an indication of a leak in the system. The vehicle will return to NRH from Aero Mode if the vehicle speed remains between 30 mph (48 km/h) and 35 mph (56 km/h) for greater than 20 seconds or if the vehicle speed falls below 30 mph (48 km/h). Pressing the "Up" or "Down" button once will move the suspension one position. Using the rear axle height sensors, the system determines when the rear axle is at the correct final height and keeps the compressor running but switches the valve block so that air flows from the reservoir to the front axle air springs. This process of alternating axles during lifting and lowering is intended to prevent dazzling oncoming motorists. The driver requests the OR2 position by pressing the Up button on the air suspension switch twice. Does 2014 nissan pathfinder SV have Bluetooth? This position also reduces body roll and provides a sportier feel. After the engine is turned off, it may be noticed that the air suspension system operates briefly, this is normal. for low speed obstacles such as large rocks, deep ruts, etc. How many miles should a 2000 Honda Accord have? Select the Suspension soft-key and touch the box next to your selection and a check-mark appears next to the feature showing the system has been activated or the check-mark is removed showing the system has been deactivated. To enter Park Mode, press the Down button once while the vehicle speed is below 25 mph (40 km/h). document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Copyright 2021 JeepSpecs.com - All Rights Reserved. The vehicle height will change automatically from Aero to Normal when vehicle speed drops below 25 mph, or when vehicle speed is less than 60 mph and the user changes the Selec-Terrain switch from Sport to Automatic. Car & Truck Starters, Alternators, ECUs & Wiring, ECUs & Computer Modules for 2011 Jeep Grand Cherokee, 1 product ratings - JEEP 2011 GRAND CHEROKEE 5.7L 68059146AG ENGINE COMPUTER MODULE ECU ECM PCM, 1 product ratings - 5150588 2011 Jeep Grand Cherokee 3.6L Engine Computer VIN Programmed Plug&Play, 1 product ratings - 68055299AE New OEM Mopar Left Door Module for 2011-2012 Jeep Grand Cherokee. Before working under the vehicle, it is necessary to disable the Quadra-Lift system to prevent unintended raising or lowering of the suspension, which is a potential safety concern. The Quadra-Lift system became available on the Limited and Overland starting in July 2010 and on Laredo models starting in mid-October. If multiple indicator lamps are flashing on the "Up" button, the highest. Heres an example of how the system functions when lifting from Normal ride height to Off-Road 2: The example highlights the camel type movement of the air suspension system. When lowering the vehicle all of the doors, including the liftgate, must be closed. Save my name, email, and website in this browser for the next time I comment. Copyright 1995-2022 eBay Inc. All Rights Reserved. What is a good interest rate for vehicle finance? The closed type system does not draw in fresh air during vehicle lifting or leveling-up, or pump air out to the atmosphere during lowering or leveling down. get in touch with us and let us know! This is one of many reasons why following service and diagnostic information is critical. There are several Quadra-Lift system tests and service routines that are performed using the scan tool. Use. The standard ride height and is best for all-around driving conditions. The system keeps compressor running but switches the valve block back again, moving air from the reservoir to the rear axle air springs.

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