How to Lock and Unlock a VSI Joystick, and How to Read VSI Fault Codes

To learn more about VSI fault codes and how to lock and unlock a VSI joystick, watch the full video, or continue below to read the article.

How to Lock and Unlock a VSI Joystick

The VSI joystick is commonly found on another chairs like Pride jazzy carbon. To lock and unlock it, read the directions below:

  • To lock your joystick: First, press the power button to turn it on. Once your power is on, you `re going to hold the power button down for 1 to 2 seconds until you hear a beep. Then, push the joystick forward until you hear another beep, and then in reverse until you hear another. It will then make a loud beep before turning off. You`ll then turn it back on, and will see the lights above the power button begin to scroll back and forth. This means it`s in the lock position.
  • To unlock your joystick: Now that it`s in the lock position, You`ll hold the joystick forward until it beeps, then in reverse until it beeps. You`ll see lights flash above the power button which means that you `re now unlocked.

VSI Fault Codes and What They Mean

With the VSI joystick, the fault codes are all based on the bar of lights above the power button. There are 3 red lights, 4 yellow lights, and 3 green lights. When they flash, however, many total lights are flashing will be what the fault code is.

Example: When you place your chair in neutral, for example, You`ll see that 9 lights will start to flash. This means that your park breaks have a bad connection, meaning you could have bad park breaks. When your chair is in neutral, You`ll want to put it back into gear. You`ll always need to turn the power off, and then turn it back on to reset it.

Let`s take a look at what other flashing lights mean on a VSI joystick:

  • If you have 1 flashing light it typically means your batteries are low and will need to be replaced.
  • If you have 2 flashing lights your left motor has a bad connection, so You`ll want to check to make sure your motor is plugged in and that the connection is not corroded.
  • If you have 3 flashing lights you have a short circuit, so most likely it will have to be replaced.
  • 4 is a bad right motor connection, so you want to check it to make sure there`s no corrosion and to make sure it`s plugged in.
  • 5 means the motor has a short, so You`ll most likely have to replace the right motor.
  • 7 flashing lights mean it`s a bad joystick. The brainbox is integrated into it, so if you have 8 flashing lights it`s telling you that you have a bad brainbox (or control box) – and regardless You`ll have to replace it.
  • 9 flashing lights, in the example, means you have bad park breaks.
  • 10 is very rare and you rarely ever see it, but it means that you have excess voltage applied to the controller.

If you`d like to learn more, give us a call at 800-677-6293 or send us an email at info@marcsmobility.com . We`d love to help!



"What I believe truly makes us successful is our commitment to treating every customer like family."

Alex Vander Poel

Co-Owner & Executive Director of Operations

Marc’s Mobility was created by my father, Marc, in 1995 when I was 7 years old. I grew up around this industry from an early age — cleaning, driving, and repairing units alongside Marc. After graduating high school in 2006, I moved to Gainesville, FL to pursue a Business degree at the University of Florida. Once I graduated, I returned to Lakeland, FL to help my father grow the business into what it is today.

I’ve now been full-time in this industry for nearly 16 years as of 2026. When I first joined after college, the company was a small 3-person operation. In the beginning, my main responsibilities included inspecting, repairing, and preparing units for shipping across the U.S. Today, as the company has grown into a team of more than 10 people, I oversee all aspects of the business and work to understand every role within Marc’s Mobility.

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