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2019 Ram 1500 Air Suspension Acting Up - Compressor Issue?

0

Mike T. · rep 0 · May 25, 2:34 AM · 1 replies · solved · Question

Vehicle: 2019 Ram 1500 Laramie

Hey everyone,

I'm having some trouble with the air suspension on my 2019 Ram 1500 Laramie. Lately, it feels like the truck isn't leveling properly, and the ride height seems inconsistent. Sometimes I hear the air compressor running excessively, almost constantly, and other times it seems completely silent when it should be active.

I've noticed the rear end sagging overnight a few times, and it takes a while to come back up. The 'Service Air Suspension' message has popped up on the dash a couple of times too. Is this a common problem for this model year? What are the typical failure points for the air suspension system on these trucks? I'm worried about further damage if I don't address it soon.

Any advice on what to look for or common diagnostics would be greatly appreciated!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 2:34 AM

0

ClearTheCode admin answer:

It sounds like you're experiencing a common issue with the air suspension system on 2019 Ram 1500s. The symptoms you describe often point to a failing air compressor or an air leak within the system. Here's what you should investigate:

  1. Check for Air Leaks:

    • Spray Bottle Test: Mix soapy water in a spray bottle and apply it to the air springs (bags), air lines, and connections, especially around the compressor and valve block. Look for bubbles forming, which indicate a leak. Pay close attention to the top and bottom seals of the air springs, as these are common failure points.
    • Listen for Hissing: With the engine off and the truck parked, listen carefully for any hissing sounds coming from the suspension components.

  2. Diagnose Compressor Health:

    • Excessive Running: If the compressor runs constantly or for extended periods, it suggests it's working overtime to compensate for a leak, or it's simply worn out and inefficient. A weak compressor might struggle to reach the required pressure.
    • Noisy Operation: An overly loud or rattling compressor can indicate internal wear.
    • OBD Codes: Use an OBD-II scanner to check for suspension-related codes. Common codes include:
      • C15AA-13: Air Suspension Compressor Control Circuit Open
      • C15AA-00: Air Suspension Compressor Performance
      • C15BB-00: Air Suspension Pressure Sensor Performance
      • C1504-00: Air Suspension System Malfunction

  3. Inspect Ride Height Sensors: While less common for the symptoms you describe, faulty ride height sensors can cause incorrect leveling. Visually inspect them for damage or disconnected wiring.

Common Causes:

  • Air Compressor Failure: Over time, the compressor motor or dryer can wear out, leading to reduced efficiency or complete failure.
  • Air Spring Leaks: The rubber air springs can develop cracks or punctures, especially in colder climates or from road debris.
  • Air Line/Fitting Leaks: Connections and lines can degrade or become loose.
  • Valve Block Issues: The valve block, which directs air to different springs, can sometimes leak internally or externally.

When to See a Shop: If you've performed basic checks and can't pinpoint the issue, or if you're uncomfortable working with air suspension components, it's best to take your truck to a qualified technician. Air suspension systems operate under high pressure and require specific diagnostic tools and procedures. Addressing it promptly can prevent further damage to other components and ensure your truck's safety and ride quality.

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