The largest online repair guide library for every car

About us
Contact support
FAQ
Sign up
Sign in

2018 TLX V6 Shuddering - Time for Transmission Fluid Change?

0

Paul Z. · rep 0 · May 22, 4:59 AM · 1 replies · solved · Question

Vehicle: 2018 Acura TLX V6

Hey everyone, I've got a 2018 Acura TLX V6 with about 75,000 miles on it. Lately, I've noticed a slight shuddering, especially when accelerating gently around 30-40 mph. It's not constant, but definitely noticeable.

I've been pretty good with regular oil changes, but I'm wondering if it's time for a transmission fluid change. I haven't had it done yet. Is this a common issue with the 9-speed automatic, and could old fluid be the cause?

What's the recommended interval for transmission fluid on these? And is it something I can tackle myself, or should I take it to a shop? Any advice would be greatly appreciated!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 4:59 AM

0

ClearTheCode admin answer:

It sounds like your 2018 Acura TLX V6 with 75,000 miles is exhibiting classic symptoms that could be related to transmission fluid degradation. The shuddering you describe, particularly under light acceleration, is a common complaint when the transmission fluid is past its prime.

Here's what you should consider:

  1. Transmission Fluid Service Interval: Acura generally recommends checking the transmission fluid at 15,000 miles or 12 months, and replacing it every 30,000 miles or 24 months under severe driving conditions, or around 60,000-90,000 miles under normal conditions. Given your mileage and symptoms, a fluid change is definitely overdue and highly recommended.
  2. Fluid Type: It's crucial to use the correct fluid: Honda DW-1 or the newer Acura/Honda ATF 3.1. Using any other fluid can cause severe transmission damage.
  3. DIY vs. Professional: A simple drain and fill can be a DIY job for those comfortable with basic car maintenance. It typically involves draining the old fluid from a drain plug and refilling through the dipstick tube (or fill plug). However, a full fluid exchange (which replaces more of the fluid) is often best done by a professional shop with specialized equipment. For a 9-speed transmission, some owners perform multiple drain-and-fills over a few hundred miles to replace more of the old fluid gradually.

Causes of Shuddering:

  • Degraded Fluid: Over time, transmission fluid breaks down, losing its lubricating and friction-modifying properties. This can lead to increased friction between clutch packs, causing shuddering.
  • Torque Converter Issues: While less common at your mileage, a failing torque converter can also cause shuddering. However, fluid is the first and most common culprit.

When to See a Shop:

  • If the shuddering persists after a proper fluid change.
  • If you notice any warning lights on your dashboard (e.g., 'D' light flashing, Check Engine Light).
  • If you're uncomfortable performing the fluid change yourself or want a more comprehensive fluid exchange.
  • If you experience hard shifts, slipping, or any other unusual transmission behavior beyond the shudder.
Menu

Help & account