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2016 Crosstrek Torque Converter Shudder at 30-40 MPH

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James R. · rep 0 · May 22, 3:14 AM · 1 replies · solved · Question

Vehicle: 2016 Subaru Crosstrek 2.0i Premium

Hello everyone,

I'm experiencing a strange issue with my 2016 Subaru Crosstrek 2.0i Premium. When I'm driving between 30 and 40 mph, especially under light acceleration or when maintaining speed, I feel a distinct shudder or vibration coming from the drivetrain. It's not constant, but it's noticeable enough to be concerning. It feels like the car is briefly driving over rumble strips, but the road is smooth.

This problem seems to be intermittent but has become more frequent over the past few months. My car has about 90,000 miles on it. I've heard that torque converter issues can cause similar symptoms in Subarus. Is this a common problem for the 2016 Crosstrek, and what are my options for fixing it?

I'm hoping it's not a major repair, but I want to get it checked out before it potentially gets worse. Any insights would be greatly appreciated!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 3:14 AM

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ClearTheCode admin answer:

The shudder you're feeling in your 2016 Subaru Crosstrek at 30-40 mph is a classic symptom of a failing torque converter, specifically issues with the lock-up clutch. This is a known concern for certain Subaru models equipped with the CVT, including your model year Crosstrek.

  1. Understanding the Problem: The torque converter's job is to transfer power from the engine to the transmission. It has a lock-up clutch that engages at certain speeds to improve fuel efficiency. When this clutch wears out or the transmission fluid becomes contaminated, it can cause a shudder or vibration as it tries to engage or disengage.

  2. Causes:

    • Worn Lock-Up Clutch: The friction material on the clutch can wear down over time, leading to slipping and shuddering.
    • Contaminated CVT Fluid: Old or degraded CVT fluid can lose its ability to properly lubricate and cool the torque converter, exacerbating wear.
    • Software Issues: Less commonly, the Transmission Control Module (TCM) software might contribute to improper lock-up clutch engagement.

  3. Diagnostic Steps: A qualified technician will typically perform a diagnostic scan to check for any stored or pending transmission-related codes (e.g., P0741 - Torque Converter Clutch Circuit Performance or Stuck Off). They will also inspect the CVT fluid condition and level.

When to See a Shop:

It's highly recommended to have your Crosstrek inspected by a Subaru specialist or dealership as soon as possible. While the car is still driving, ignoring a torque converter shudder can lead to further damage to the CVT itself. The common fix for this issue often involves replacing the torque converter, and sometimes a full transmission replacement if the damage is extensive. A fluid flush might offer temporary relief but usually isn't a long-term solution for a worn lock-up clutch. Early diagnosis can potentially save you from more costly repairs down the line.

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