What goes wrong
The Continuously Variable Transmission (CVT) can exhibit a delay in engaging power when moving from a standstill. This often presents as a brief but perceptible pause before the vehicle begins to accelerate, which can be disconcerting and sometimes hazardous in traffic.
Symptoms to watch for
- Hesitation or lag when accelerating from a stop
- Delayed power delivery after pressing the accelerator
- Feeling of disconnect between engine RPM and vehicle speed at low speeds
Root cause
The most common root cause is a software calibration issue within the Transmission Control Unit (TCU) that governs the CVT’s clutch engagement and simulated gear ratios. Over time, internal wear within the CVT’s valve body or torque converter can also contribute to this symptom.
Buy time with these
- • Apply smooth and gradual throttle input from a stop
- • Ensure regular and timely CVT fluid changes per maintenance schedule
Permanent fix
- TCU software update/reflash
- CVT valve body replacement
- CVT replacement (in severe cases)
Related recalls / TSBs
FAQ
What causes cvt hesitation off the line?
The most common root cause is a software calibration issue within the Transmission Control Unit (TCU) that governs the CVT’s clutch engagement and simulated gear ratios. Over time, internal wear within the CVT’s valve body or torque converter can also contribute to this symptom.
How much does it cost to fix?
National average $150–$2,500. Repair costs vary significantly depending on whether a simple software reflash (low end) or a full CVT replacement (high end) is required. Most cases involve a software update or valve body replacement.
Is this a DIY repair?
Difficulty 1/5. TCU software update/reflash
What are the symptoms?
Hesitation or lag when accelerating from a stop; Delayed power delivery after pressing the accelerator; Feeling of disconnect between engine RPM and vehicle speed at low speeds