2014 Ram 1500 Air Suspension Problems

The 2014 Ram 1500, equipped with its optional air suspension system, offered a novel blend of ride comfort, off-road capability, and load leveling. However, this advanced system was not without its potential drawbacks, and owners have reported a range of issues that can impact its performance and reliability. This article will explore common problems encountered with the 2014 Ram 1500 air suspension, helping owners and prospective buyers understand the potential challenges and troubleshooting steps.

Understanding the Air Suspension System

Before delving into specific problems, a basic understanding of the system's components is essential. The air suspension system, in essence, replaces traditional coil springs with air springs, also known as air bags. These air springs are inflated and deflated by an air compressor, allowing the vehicle's ride height to be adjusted. Key components include:

• Air Compressor: This electric pump pressurizes the air that inflates the air springs. It typically includes a dryer to remove moisture from the air, preventing internal corrosion and damage.
• Air Springs (Air Bags): These rubberized bladders hold the compressed air, providing the vehicle's suspension support. There is typically one air spring at each wheel.
• Height Sensors: These sensors measure the distance between the axle and the vehicle's frame, providing feedback to the control module regarding the vehicle's ride height.
• Control Module (Air Suspension Control Module - ASCM): This electronic unit receives data from the height sensors and other inputs, controlling the air compressor and the valves that regulate airflow to the air springs.
• Valve Block: This component contains solenoid valves that control the flow of air to and from each air spring, allowing for individual ride height adjustment.
• Air Lines: These lines connect all the components, delivering pressurized air throughout the system.
• Reservoir (Optional): Some systems incorporate an air reservoir to store compressed air, allowing for quicker ride height adjustments.

Common Problems and Troubleshooting

Air Spring Leaks

One of the most prevalent issues is air spring leakage. Over time, the rubber material of the air springs can degrade, crack, or develop pinhole leaks, causing air to escape. Symptoms of an air spring leak include:

• The vehicle leaning to one side or corner sagging.
• The air compressor running excessively to compensate for the leak.
• A hissing sound emanating from the air spring.
• The "Service Air Suspension System" warning light illuminating on the dashboard.

Troubleshooting:

A visual inspection of the air springs is the first step. Look for cracks, bulges, or signs of deterioration. A soapy water test can help pinpoint the leak. Spray a solution of soapy water onto the air spring and look for bubbles forming where air is escaping. If a leak is detected, the air spring needs to be replaced.

Example: A 2014 Ram 1500 owner noticed the rear of his truck was significantly lower on one side in the mornings. After inspecting the rear air springs, he found small cracks on the surface of one airbag. A soapy water test confirmed a slow leak.

Air Compressor Failure

The air compressor is crucial for maintaining the correct air pressure within the system. Compressor failure can be caused by several factors, including:

• Excessive use due to leaks in the system.
• Moisture contamination leading to internal corrosion.
• Worn-out components, such as the piston ring or valves.
• Electrical issues, such as a faulty relay or wiring harness.

Symptoms of compressor failure include:

• The air suspension system not functioning at all.
• The vehicle sitting low or at its lowest setting.
• The air compressor failing to activate.
• The "Service Air Suspension System" warning light illuminating.

Troubleshooting:

Check the compressor's fuse and relay. Use a multimeter to verify that the compressor is receiving power and ground. If power and ground are present, the compressor itself may be faulty. Listen for any unusual noises coming from the compressor when it's attempting to run. A grinding or clicking sound could indicate internal damage. Also, inspect the compressor's dryer for saturation; a saturated dryer indicates excessive moisture in the system, often caused by underlying leaks.

Height Sensor Malfunctions

Height sensors provide critical feedback to the control module, ensuring the vehicle maintains the correct ride height. A faulty height sensor can lead to inaccurate ride height adjustments, uneven suspension, or error codes.

Symptoms of a height sensor malfunction include:

• Erratic ride height adjustments.
• The vehicle sitting too high or too low.
• The "Service Air Suspension System" warning light illuminating.
• Uneven ride height from side to side.

Troubleshooting:

Visually inspect the height sensors and their linkages for damage or looseness. Use a diagnostic scanner to read the height sensor values. Compare the readings from each sensor; significant discrepancies may indicate a faulty sensor. Check the wiring harness and connectors for corrosion or damage. In some cases, a sensor can be recalibrated using a diagnostic tool.

Valve Block Issues

The valve block controls the distribution of air to the individual air springs. Problems with the valve block can result in uneven ride height, suspension failure, or error codes.

Symptoms of valve block issues include:

• Uneven ride height between the front and rear axles or from side to side.
• Failure of the suspension to adjust ride height.
• The "Service Air Suspension System" warning light illuminating.

Troubleshooting:

Check the valve block's electrical connections and wiring. Use a diagnostic scanner to test the individual valves and verify that they are functioning correctly. Listen for the clicking sound of the valves opening and closing. If a valve is not operating, it may be necessary to replace the entire valve block.

Air Line Leaks

The air lines connect the various components of the system. Leaks in the air lines can cause pressure loss, leading to suspension problems.

Symptoms of air line leaks include:

• The air compressor running frequently.
• The vehicle sitting low or at its lowest setting.
• A hissing sound emanating from the air lines.

Troubleshooting:

Visually inspect the air lines for cracks, kinks, or loose connections. Use a soapy water solution to check for leaks at the fittings and connections. Replace any damaged or leaking air lines.

Preventative Maintenance and Practical Advice

While some air suspension problems are inevitable due to component wear and tear, preventative maintenance can help extend the life of the system and minimize potential issues. Consider the following:

• Regular Inspections: Periodically inspect the air springs, air lines, and other components for signs of damage or wear.
• Moisture Control: Ensure the air compressor's dryer is functioning correctly and replace it as recommended to prevent moisture buildup in the system.
• Proper Loading: Avoid overloading the vehicle, as this can put excessive strain on the air suspension system.
• Address Issues Promptly: If you notice any signs of air suspension problems, such as a sagging corner or excessive compressor noise, address the issue promptly to prevent further damage.
• Use a Reputable Mechanic: When having the air suspension system serviced, choose a mechanic with experience working on these systems. Improper repairs can lead to further complications.
• Consider an Extended Warranty: Given the potential for costly repairs, consider purchasing an extended warranty that covers the air suspension system.

Understanding the potential pitfalls of the 2014 Ram 1500's air suspension system empowers owners to proactively manage its maintenance and address issues before they escalate into major problems. By performing regular inspections, addressing leaks promptly, and using a qualified mechanic for repairs, you can maximize the lifespan and performance of this complex system.