---
title: "Troubleshooting: Chair Only Vibrates When Pulse Oximeter Is Unplugged"
description: Fix vibration issues where your Shiftwave chair only works when the pulse oximeter is unplugged. Step-by-step guide to check and turn off BioDrive®.
---

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# Troubleshooting: Chair Only Vibrates When Pulse Oximeter Is Unplugged

If your chair only vibrates when the pulse oximeter (finger sensor) is unplugged, this usually means that **BioDrive® is turned ON**.

### **Why This Happens**

- When **BioDrive® is ON**, the chair vibrations sync with your heart rate. 
    - The chair will only vibrate if the pulse oximeter is plugged in *and* on your finger.
- When **BioDrive® is OFF**, the chair should run Protocols normally, even with the pulse oximeter plugged in.

### **Step 1: Check if BioDrive® is On**

- Look at the control box display.
- If the **BioDrive® light or indicator is active**, the system is running in BioDrive® mode.

### **Step 2: Turn Off BioDrive®**

- Press the **BioDrive® button** on the control box to turn it off.
- The indicator light should turn off, showing that BioDrive® is no longer active.

### **Step 3: Test the Chair**

- Start a Protocol with the pulse oximeter plugged in.
- The chair should now vibrate normally, regardless of whether the sensor is on your finger.

### **Still Need Help?**

If your chair still only vibrates with the pulse oximeter unplugged, even after turning BioDrive® off, [please contact our support team.](https://shiftwave.co/pages/support) We’ll help you get it resolved.

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