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2018 Pacifica: Transmission Fluid Change - Hesitation & Fluid Type?

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Sarah K. · rep 0 · May 22, 5:54 AM · 1 replies · solved · Question

Vehicle: 2018 Chrysler Pacifica Touring L

Hey everyone, I've got a 2018 Chrysler Pacifica Touring L with about 75,000 miles on it. Lately, I've noticed a slight hesitation when shifting from 2nd to 3rd gear, especially when the engine is cold. It's not super harsh, but it's definitely noticeable.

I'm wondering if it's time for a transmission fluid change. I've heard different things about transmission fluid intervals for these vans. Some say 'lifetime,' others say every 60k. What's the official word, and more importantly, what specific fluid should I be using if I decide to tackle this myself?

I want to make sure I use the correct Mopar fluid or an approved equivalent to avoid any issues. Also, is this hesitation a common sign that the fluid is getting old, or could it be something more serious? I haven't seen any warning lights on the dash yet. Any advice on the DIY process would be great too!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 5:54 AM

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ClearTheCode admin answer:

It's good you're thinking about your transmission fluid, Sarah. A slight hesitation, especially when cold, can indeed be a symptom of aging transmission fluid or low fluid levels. While some manufacturers market 'lifetime' fluids, it's generally understood that for optimal performance and longevity, transmission fluid should be changed periodically.

Here's what you should consider:

  1. Fluid Change Interval: For your 2018 Chrysler Pacifica, the owner's manual typically recommends inspecting the transmission fluid at regular intervals (e.g., every 20,000 miles or 2 years) and changing it under severe driving conditions (e.g., heavy city traffic, towing, mountainous terrain) around 60,000 miles. For normal driving, some manuals extend this, but 75,000 miles is a reasonable point to consider a change, especially with symptoms.
  2. Correct Fluid Type: It is absolutely critical to use the correct fluid. For your Pacifica, you must use Mopar ATF+4 automatic transmission fluid or an officially licensed equivalent. Using any other type can cause serious damage to your transmission.
  3. DIY vs. Shop: A simple drain and fill can be a DIY project, but it only replaces a portion of the fluid. A full fluid exchange (flush) requires specialized equipment and is best done by a professional shop. If you choose DIY, ensure you have the correct tools, know how to safely lift the vehicle, and can accurately measure and refill the fluid.
  4. Check for Codes: Even without a dash light, a pending diagnostic trouble code (DTC) might be present. If you have access to an OBD-II scanner, check for codes like P0700 (Transmission Control System Malfunction) or P0741 (Torque Converter Clutch Circuit Performance or Stuck Off), which could indicate fluid-related issues or other problems.
  5. When to See a Shop: If the hesitation worsens, you notice any grinding noises, fluid leaks, or if a check engine light illuminates, it's time to visit a qualified mechanic. They can perform a more thorough diagnosis, check for internal wear, and ensure the correct fluid exchange procedure is followed.
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