My pronto motor won't engage, but the battery is fully charged. Any ideas what's wrong.

Is the starter motor engaging? Is there a click when you try?

Check wiring or control switch and check fuses agaain

I would have the battery tested anyway to make sure you don't have a dead cell. Usually even with a weak battery the starter will try to engage the flywheel on top of the motor.Besides the battery check the fuse located on the motor. If all is good then you can remove the starter for testing and possible rebuilding.

How old are the batteries? Even fully charged older batteries can be weaker and not give you as much power to keep the speed at what you are used to. Now a dragging bake can cause you to go slower and also drag the batteries down quicker. Try driving the chair and after awhile check each motor to see if they feel overly warm or hot If one or both feel very warm or hot then I would have the brake or brakes checked If they seen ok I would get the batteries replaced

Your starter solenoid/starter motor is going bad and needs to be replaced/rebuilt.

Usually it is the Solenoid as the contacts get burnt/eaten away, and not enough current can flow through it.

Randal the problem sounds like a battery issue. If after charging you get a green light on the charger and the batteries run down quickly there is one or both of the batteries that is weak and cannot handle the load required by the motors. If Medicare paid for your chair contact the provider that sold you your chair and ask them to come replace the batteries. They should then bill Medicare for the batteries. Hope this helps

Jo, nope you are safe. Most of the chargers are designed to cut off and go into trickle charge once they sense that the batteries are fully charged. The problem with overcharging comes after 18 hours or so. You should never leave the charger plugged into the chair for more than 24 hours. On the M51 the charger is built into the chair so just plug it in when you go to bed and unplug it when you get up and you'll be ok. You can check for full charge by looking at the charger there should be a red light and a green light when fully charged. Hope this helps

Hi. Check the free-wheel levers. There is one on each motor. If you can push the machine along the floor, then the lever is in the wrong position.
If it still doesn't work, then count the flashes of each LED, and let us know.
I had this problem last week on a machine, and the local auto electrician couldn't fix it.
Good luck. Neil.

When you say "control box" I assume that you mean the joystick. If there is no power to the joystick be sure that the batteries are fully charged and be sure that they do not need to be replaced, also be sure that the cables were not put on wrong. If all that checks out then be sure that all the cables are tight.

If all these do not solve the problem then you need to have the joystick tested.

Margie,   Yes you may charge it overnight. If you use it everyday,charge it every night. Once the charger senses 24 volts it stops sending a charge,so they cannot be overcharged.  I suggest when you go to bed put on the charger and unplug it when you get up in the morning.