I have a pre-used mobility scooter. It suddenly stopped dead so hard I slipped forward on my seat. Does this sound electrical? surely if it was flat batteries I would have slowed to a stop? thanks Deb

Possible cause, throttle pot this causes surging.

Your wigwag pot sounds faulty you can very often buy a good used one on eBay

hi ,that sounds like the throttle pot is no centre, some controllers will signal a fault some don't so it's possible the throttle pot stem has turned round, check by looking at the base of the stem , you should see a cross head, now that should be dead centre to you when turning on...

Regards
Rob

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The beeping indicates a failure of the motor.This is caused by either the brakes are seized or the controller for the motor has failed.
In the first case just remove the rear cover and , using a big flat screwdriver, just push the brake pads away from the disk. In the second case there is nothing you can do, you will have to contact the manufacturer - Handicare - or the dealer from which you have purchased it and find out which is the closest location that can service your scooter.

Peter,

It sounds like you have a bad throttle potentiometer or worn/bad brake. You could also have weak batteries. Let me address each of these in turn.
The most likely problem is that the throttle potentiometer spring or the potentiometer is worn out. The pot is not going to a neutral position when you release it. The electrical neutral is in the center of the pot throw, not forward, not reverse. If the spring is deformed, weak or worn the pot will not come back to center. The controller electrically senses that the brakes do not need to be applied after a period of regenerative braking (lag time to slow the motor down before the brakes are applied). The electrical slider inside the potentiometer may be worn from continuous use and not making good electrical contact, thus the electrical signal to the controller is reduced. Using a digital voltmeter you can check for electrical dead spots throughout the typical 5K ohm range in forward and reverse. Center should be 0 ohms with +5K to -5K ohms to common read from the outer terminals.
A bad electromechanical brake which works like a solenoid could be your problem. When the controller sends power to work the brake the solenoid needs to grab the brake disc. There could be too much brake dust or the disc may be worn out or slipping. The solenoid coil may be open or shorted, With a digital voltmeter the resistance should be between 40 to 60 ohms.
With the two preceding solutions comes a disclaimer. If the batteries are old or weak, the electronics and performance including braking will be weak or poor. Make sure you have fully charged batteries that load test good. It takes a good set of batteries to make the motor turn and to make the motor stop.
A good tech will charge less than an hour labor for the above service. I usually replace the throttle potentiometer and speed potentiometer as a pair since they are electrically connected in series.
Hope this helps.

Does the scooter have any power to it at all? Have you recently charged the batteries? If the scooter has been sitting unused for a while the batteries may not take a full charge and need to be replaced. If the batteries are good, check the fuses and all of the battery connections to ensure nothing has come lose. Sounds like a power issue.
Good luck!

Hi. Sounds like a loose connection, either on the battery terminals, or on the battery lead connectors.
When your machine suddenly stops, does the battery gauge also turn off?
Can also be caused by a worn or stuck motor brush.
If none of these ideas help, can you give us a better description of what goes wrong?
Good luck. Neil.

hi, I first suggust you make sure that Freewheel is disengaged,

to test this try to push the scooter forward if it moves forward move the lever ,

Check the Wigwam or throttle controls to make sure they are not loose,

Check for reset switches under the seat or on the steering stem,

Check for car type fuses under the seat.

First of all,

Make sure the freewheel lever is unengaged (up or down ?) , this can be tested by pushing the scooter forward , you should hear gearbox clunk,(Freewheel not engaged) Not all scooters sound a alarm when freewheel is engaged.

is the power indicator working okay,

Does the Wig Wam move freely, the thumb throttle part,

Check under the seat to make sure you have not blown or tripped the fuse, if it's a switch simply pressing the button will sort it, if not check the two prong fuse ,

you may also have some reset buttons on the stem so look out for them.

Now let me what you tried

Regards
GeWiz.