How can we help you? How do I Lock the Controller of my Hoveround Power Wheelchair? 2 out of 3 found this helpful The MPV5 is equipped with a locking feature. Here are the instructions and illustrations on how to lock and unlock the controller. Was this helpful? Yes (2) No (0) Category: General Related Questions Does Medicare pay for repairs to my power chair? How do I replace the batteries on my MPV4 or MPV5 power wheelchair? Where is the Fuse located on my MPV4 or MPV5 Power Wheelchair? Is there any maintenance required for my power chair?