I have an Invacare Pronto M41. When you push the power button, the battery meter lights ramp up from left to right, then go off, then ramp left to right, go off, continuosly. Also, the service light is flashing 5 times. The chair will not move, but the horn will sound. ANy ideas? I've found the operator manual,but it refers to an electrical troubleshooting manual that I can't find online. Thank you for any hellp

switch fail

Turn on the Chair and within 10 sec. push the horn twice Beep Beep, this should unlock it.
Scooter Doctor

I’m happy to assist further over the phone at https://www.6ya.com/expert/bill_bcbb89783b08c489

You are locked out.
turn on push horn 2 times quickly.
or turn on push joystick handle forward all the way until it beeps then back all the way until it beeps. there you go!

I’m happy to assist further over the phone at https://www.6ya.com/expert/bill_bcbb89783b08c489

Hello,
Lets make sure this is just the joystick lock mode. When you turn the chair on and it is in joystick lock mode all the battery level lights will chase across several times and then the joystick will turn off.
When you turn the chair on and you see the battery level lights chasing from right to left push and hold down the power button till the lights turn off. Only the first year that the M41 was made had this option.

If your M41 has the mark V controller that is seen pictured in the stock photo you provided, the 5 flash code is a left park brake fault.
1. Turn off the chair.
2.Disengage the left motor (levers are located in front under the seat) roll the chair back and forth and re-engage the left motor.
3. Engage the left motor.
4. Turn on chair.

If you happen to have the older Mark IV controller (has a toggle switch to turn on/off and three battery lights), the 5 flash code means the chair is receiving high or low voltage from the batteries. I would recommend having the batteries checked.

If the chair stops flashing, you are good to go. If the chair is still flashing, you will need to contact a technician to possibly replace the left brake. I recommend Repair Xpress FixMyPWC com Nationwide service and delivery solution for power...

Hello,

The Pronto M41 does not have a speed limiter per say. If the chair used to go faster than it does now then you may have some kind of problem with the chair. If the chair has always driven' slow, that is slower than the maximum 3.5 to 4 MPH then a Invacare Remote programmer is needed to program the chair to go it's full speed.
Seek a Invacare dealer and ask them if they can check the programming.

Problem with Invacare Pronto M41 Power Wheelchair - Office Style Seat
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You can download the M41 manual at the Invacare website:

http://www.invacare.com/doc_files/1143206.pdf

First thing you must know is that the error codes are reversed on Pronto chairs with SPJ+ joysticks.
Only one year the M41 was made that the codes were correct. From approximately April 2008 to May 2009 was the only time a left error code ment left motor and a right code ment a right motor. Same for brake codes.
Brakes codes happen when the brake is out of gear, unplugged from the control brain or wire cut. Also from internal coil damage. Unless it's a wire you can reconnect you cannot fix the brake.