In this brief article we are going to discuss the JEEP Grand Cherokee air suspension, the different common problems this system faces, what causes these problems and tips on maintenance. Show
Does the Jeep Grand Cherokee have air suspension?Yes, some Grand Cherokee variants are factory-fitted with a Quadra-Lift Air Suspension. This Quadra-Lift Air Suspension system is sold as standard equipment on the elite Trailhawk, Overland, and Summit model variants. Apart from these models, the Quadra-Lift is also available on the Limited trim version of the Jeep Grand Cherokee with some packages. How the Jeep Quadra-Lift Air Suspension WorksThe QuadraLift is a closed-loop system, which means that the air spring ride adjustments happen a lot faster. Other competitor systems use an air compressor that must draw in or exhaust air for proper spring operation. The QuadraLift, on the other hand, circulates stored pressurized nitrogen between the reservoir and the air springs, instead of drawing in fresh air from or to the atmosphere. The QuadraLift system therefore eliminates the need for an air-dryer that removes moisture from atmospheric air. Also, the possibility of corrosion is very low since moisture is eliminated by using Nitrogen. height sensors, located at the Front and rear of the vehicle, measure the gap between the body and wheel. This information is signalled back to the suspension control unit so that the individual air struts’ height is adjusted real time. The air suspension control module (ASCM) controls the struts’ ride height during all driving and loading conditions as per the selected Ride modes. The Quadra-Lift features five Ride modes and each has its own benefits:
This is the ‘Normal Ride Height’ or the standard Suspension height. This is the height that is best suited to all-around driving conditions and offers 8.1 inches of clearance at stand-still.
This Ride Mode is suited to mild Off-roading. It provides a good balance between increased ground clearance and ride comfort with 9.4” of clearance at stand-still. While driving faster than 50 mph, the ASCM will automatically switch to NRH and lower the suspension.
This Ride Mode is made for full Off-roading capability. It is set at a maximum ride height of 10.7” for the maximum suspension travel. While driving faster than 25 mph, the ASCM will automatically switch to OR-1 and lower the suspension.
This Ride Mode will lower the vehicle by about half an inch for better aerodynamics and fuel economy on the highway. ‘Aero Mode’ also provides a harder more sportier suspension feel. The ‘Aero mode’ automatically engages at vehicle speeds exceeding 66 mph.
Troubleshooting Tips for Grand Cherokee QuadraLift Air System
Conclusion In this brief article we have discussed the JEEP Grand Cherokee air suspension, the different common problems this system faces, what causes these problems and tips on maintenance. Please feel free to ask in case of any questions or comments. References CarComplaints.com Frequently Asked Questions (FAQs):How do you reset the air suspension on a Jeep Grand Cherokee?The Grand Cherokee air suspension can be reset by doing the following:
Sometimes because of changing weather conditions, the lift system does tend to get stuck and throw an error. What are the most common problems with the Jeep Grand Cherokee?The most common Jeep Grand Cherokee issues are:
Do Jeep Grand Cherokees have a lot of problems?Yes, the Grand Cherokee accounts for more than 25% of all the Jeep complaints, with nearly 3,000 complaints spread across all model years. The top problem category has been observed as electrical. CarComplaints.com has named the 2015 Grand Cherokee as the worst model year since repair costs are higher and problems appear at relatively lower mileage. What does service air suspension system mean?What Is an Air Suspension System? An air suspension system is a style of vehicle suspension that's powered by an electric pump or compressor that pumps air into flexible bellows that are typically made out of a textile-reinforced type of rubber.
How much does it cost to fix air suspension on Jeep Grand Cherokee?The Best in Auto Repair
The average cost for a Jeep Grand Cherokee active suspension air spring replacement is between $2,625 and $3,132. Labor costs are estimated between $180 and $227 while parts are priced between $2,445 and $2,906.
What causes air suspension failure?Common air suspension failure points are:
Mainly, weathering and the repeated compression/decompression cycles cause cracks in the rubber bellows. Air dryer - Since air contains moisture, suspension systems include dryers and filters to keep that out of the sensitive components.
Is air suspension high maintenance?Air ride suspension is a great way to get an adjustable suspension for your vehicle, but it will come with more maintenance than your standard lowering springs or coil-overs.
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