The LED status changes and the EVIC message Off Road ride height Level 2 is displayed. The system is correcting the position of the, To assist with changing a spare tire, the Quadra-Lift air suspension system has, a feature which allows the automatic leveling to be disabled. To enter Park Mode, press the Down button once while the vehicle speed is below 25 mph (40 km/h). This is normal and should not require service. One connection is the inlet from the compressor, and the last connection exhausts the system. The air suspension control module (ASCM) contains the logic that controls ride height during all driving and loading conditions. Pressurized air is moved between the reservoir and the springs by way of an air supply unit (ASU). He builds websites on the side and has a slight obsession with Drupal, Joomla and Wordpress. View cart for details. Required fields are marked *. Inspect the trunk lining on the driver side. for low speed obstacles such as large rocks, deep ruts, etc. Air Suspension Over Temperature Message in the Electronic Vehicle Information Center When the air suspension compressor has to run for a significant period of time or the air suspension system is being used a lot by the driver, the compressor may need to cool down. 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 system keeps compressor running but switches the valve block back again, moving air from the reservoir to the rear axle air springs. The size and volume of the nitrogen supply tank will determine how many air suspension systems can be filled. Your email address will not be published. When lowering the vehicle all of the doors, including the liftgate, must be closed. For example, when changing from normal to the aerodynamic ride height, the air suspension lowering icon displays until feedback from the height sensors indicates the aerodynamic ride height is achieved. The ASU also contains an intake / exhaust assembly with filter, onboard desiccant, a reversing valve, a temperature sensor, and a pressure sensor. 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). Quadra-Lift is a closed system so adjustments are much faster than other systems that must draw in or exhaust air for operation. The DTC in the ASCM module does not necessarily indicate service is needed. The Quadra-Lift air suspension system uses a lifting and lowering pattern which keeps the headlights from incorrectly shining into oncoming traffic. Refer to Electronic Vehicle Information Center (EVIC) in Understanding Your Instrument Panel for further information. The height can be changed from the default Selec-Terrain setting by normal use of the air suspension buttons. 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. Quadra-Lift operates automatically, or may be controlled manually via console controls. Step to the rear of the vehicle and open the trunk. Please note that this site has no affiliation with the Chrysler Motor Company. Over time, the air bags that level out the system may fail and require replacement. The vehicle is raised, (if equipped with Air Suspension) for improved ground clearance. Provides 1.3 extra inches (9.4 inches of clearance) for off-roading, but allows a bit more suspension comfort. What is the best model of Dodge Grand Caravan? Close the trunk. 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. The ASU valve block provides six color-coded pneumatic connections to the system. This is normal. 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. This position provides a good balance between ground clearance and ride comfort. A message appears in the EVIC indicating that the Quadra-Lift system has been disabled. Using the front axle height sensors, the system determines the front axle is at the correct intermediate height. Pressing the "Up" or "Down" button once will move the suspension one position. What is the name of the Cadillac pickup truck? It is important to note that the ASU is not designed to fill an empty system. Lowers the vehicle just over a half inch to maximize aerodynamics and fuel economy at highway speeds. The driver requests the OR2 position by pressing the Up button on the air suspension switch twice. It actuates the compressor and valve block, moving air from the reservoir to the rear axle air springs. 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. The Quadra-Lift air suspension system provides height control and lifts the vehicle up to 4.1 inches from park mode to a best-in-class maximum ride height of 10.7 inches. Push the switch to "Off" to shut down the Town Car's air-suspension system. 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. 1 product ratings - 2011 JEEP GRAND CHEROKEE DODGE DURANGO 3.6L ECM ELECTRONIC CONTROL MODULE, Other Starters, Alternators, ECUs & Wiring. 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. The feature controls, are located in the radio screen. 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). get in touch with us and let us know! The ASCM controls the ASU compressor and valve block, and is influenced by many other modules and systems. Welcome to the JeepSpecs.com in-depth page on the WK2 Jeep Grand Cherokee Quadra-lift air suspension system. flashing indicator lamp is the position the system is working to achieve. This position should be the default position for all off-road driving until OR2 is needed. The system also continually monitors passenger, cargo and trailer tongue weight and adjusts the air suspension automatically, to maintain a level ride. For complete diagnostics information, procedures and safety warnings consult the factory service manual. Push the switch the "On" to turn the air-suspension system back on. Did we miss anything? 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. 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. Instead it moves stored pressurized air from the reservoir to the air springs and back again. lowering the vehicle, the front will move down first and then the rear. This may cure an intermittent problem. Diagnosis and repair of the Grand Cherokees air suspension system may require the use of the wiTECH system tests tab to run programs that test the system or to run one of many routines from the miscellaneous functions tab that place the system into a mode suitable for service. Vehicle speed that is excessive or too low prevents certain modes from being achieved and a message displays. Leonardo R. Grabkowski has been writing professionally for more than four years. It can function independent of the Selec-Terrain system according to driver selection. The Quadra-Lift system features five height settings for optimum ride performance, each with its own benefits. This is one of many reasons why following service and diagnostic information is critical. When raising the vehicle, the rear of the vehicle will move up first and then the front. Shut down your Lincoln Town Car. The vehicle height will change automatically from Off-Road 1 to Normal when vehicle speed exceeds 50 mph. You'll see a plastic switch marked "On" and "Off.". This position also provides the best approach, departure, and breakover angles. It is the first SUV to use the latest air suspension technology utilizing a closed type design. Does 2014 nissan pathfinder SV have Bluetooth? Four connections distribute or retrieve air from each of the air springs. Rear springs are stand-alone springs that are not incorporated with the shock absorber. Using the rear axle height sensors, the system determines when the rear axle is at the correct intermediate height and keeps the compressor running but switches the valve block so that air flows from the reservoir to the front axle air springs. The ASCM operates on the CAN-C network and is displayed in wiTECHs network topology screen. When lowering the vehicle, the front will move down first and then the rear. The Quadra-Lift system became available on the Limited and Overland starting in July 2010 and on Laredo models starting in mid-October. To exit Park Mode, press the Up button once while in Park Mode or drive the vehicle over 15 mph (24 km/h). If multiple indicator lamps are flashing on the "Up" button, the highest. The 4 indicator lamps will illuminate to show the current position of the vehicle. Save my name, email, and website in this browser for the next time I comment. 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. Your email address will not be published. Press the Apps soft-key, then press the Settings soft-key to display the menu setting screen. 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. When did Detroit Grand Prix move to Belle Isle? 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. 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). The raising or lowering icon appears when the system changes from mode to mode. 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. The system requires that the engine be running for all changes. After the engine is turned off, you may notice that the air suspension system, operates briefly. The Lincoln Town Car comes with an air-suspension system known as "Air Ride." This position also reduces body roll and provides a sportier feel. The system is correcting the position of the vehicle to ensure a proper appearance. Use of the scan tool is instrumental in the diagnosis and repair of Quadra-Lift system concerns. Use. Rock Off-road calibration only available in 4WD Low range. What is the best used 3rd row SUV to buy? higher or lower from the current position, assuming all conditions are met (i.e.. engine running and all doors and liftgate closed). Disconnect the positive battery cable for 5 minutes. 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. While in OR2, if the vehicle speed exceeds 25 mph (40 km/h) the vehicle height will be automatically lowered to OR1. Push the trunk release switch located on the bottom part of the driver-side door panel. 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. Press the Up button once from the NRH position while the vehicle speed is below 48 mph (77 km/h). 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. Using height sensors, the system determines the vehicle needs to be raised in order to achieve the proper height at the four suspension corners. Many routines are helpful tools that can make diagnosing Quadra-Lift suspension concerns easier. After the engine is turned off, it may be noticed that the air suspension system operates briefly, this is normal. Additionally, there are several inputs to the air suspension control module that prevent the air suspension system from changing modes. 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. Traction based, tuning with improved steer-ability for use on high traction off-road surfaces. Whether the air suspension system is operating normally or has a system fault, the electronic vehicle information center (EVIC) continuously displays status messages to alert the owner or technician. Excessive air supply unittemperature also disables the air suspension system until the compressor cools down to safe operating levels. Turning the Selec-Terrain knob to the AUTO position will return the system to normal operation. Copyright 1995-2022 eBay Inc. All Rights Reserved. Refer to Selec-Terrain in Starting and Operating for further information. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Copyright 2021 JeepSpecs.com - All Rights Reserved. The front springs are a modular spring-over-shock design, very similar to a coil-over-shock design. Driving the vehicle over 5 mph (8 km/h) will return. The scan tool is also needed to prepare the system for service or to adjust system settings after a repair has been made. The vehicle will enter Aero Mode, regardless of vehicle speed if the Selec-Terrain knob is turned to the SPORT position. What is a good interest rate for vehicle finance? 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. Lowers the entire vehicle 1.5 inches below normal height to make loading and unloading people or cargo much easier. This process of alternating axles during lifting and lowering is intended to prevent dazzling oncoming motorists. To temporarily disable the Quadra-Lift system, press and hold the suspension up and suspension down buttons simultaneously for 5 to 10 seconds. The vehicle will automatically enter Aero Mode when the vehicle speed remains between 62 mph (99 km/h) and 66 mph (106 km/h) for greater than 20 seconds or if the vehicle speed exceeds 66 mph (106 km/h). 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. The standard ride height and is best for all-around driving conditions. If you are experiencing problems with the air-suspension system, consider resetting it by turning it off, then back on. 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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). Start typing to see results or hit ESC to close, Special Limited-Edition Freedom Package For 2023 Gladiator And Wrangler, Your Guide to the 4.7L PowerTech V8 Engine, Jeep Wrangler Rubicon 392 Named Four Wheeler 2022 SUV of the Year, Closed type air suspension design results in fast ride height changes, Ability to change ride height with the push of a button, Improved off-road performance by increasing ground clearance with 2 settings: Off-Road II is 2.6 higher than normal ride height (NRH) and Off-Road I is 1.3 higher than NRH, Automatically lowers at highway speeds to reduce drag resulting in better fuel economy (0.5 lower than NRH), Park mode provides lowers vehicle for easier entry & exit (1.5 lower than NRH). Once the vehicle speed goes below 15 mph (24 km/h) the vehicle height will begin to lower. The Selec-Terrain switch will automatically change the vehicle to the proper height based on the position of the Selec-Terrain switch. 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. The EVIC displays and the LED status changes on the air suspension switch. 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. There are times when the system will need to make up a significant amount of air. On vehicles equipped with Auto Entry/Exit Suspension mode, the feature can be turned on or off via Customer Programmable Features on the radio. During normal operation, there are five level achieved messages that correspond to the five unique air suspension system heights or modes. When. There are several Quadra-Lift system tests and service routines that are performed using the scan tool. Using the front axle height sensors, the system determines the front axle is at the correct final height and leveling is complete. An audible chime will be heard whenever a system error has been detected. Insert all the fuses you just pulled out. How many miles should a 2000 Honda Accord have? Driving the vehicle over 5 mph (8 km/h) will return the air suspension to normal operation. Flashing indicator lamps will show a position which the system is working to, achieve. A message will be displayed on the EVIC indicating the compressor is cooling down and there will be a diagnostic trouble code (DTC) set. Something went wrong. The ASUs main function is to pressurize and move air that is already there. Quadra-Lift is supported by four-corner air springs that provide a cushioned, premium ride. If the EVIC message and DTC occurs often, it may be an indication of a leak in the system. It offers 8.1 inches of clearance and provides the most comfortable balance of ride and handling. the vehicle, the rear of the vehicle will move up first and then the front. The ASU consists of an air compressor and a valve block assembly that is plumbed to the springs with a network of lines. 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. How do I find the previous value of my car? 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. 1 product ratings - Fits Jeep Grand Cherokee SRS Module Reset Service Light Fix - 24HR! Provides the maximum ride height of 2.6 extra inches (10.7 inches of ground clearance) for the highest clearance over obstacles. 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. The aerodynamic ride height message displays. Test the Quadra Lift system by changing the ride height. If it does not, you may have further problems with the system that require the assistance of a dealer. Grabkowski attended college in Oregon. A smoother and more comfortable ride will result.
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