Error 13 plus ...

[BCBeaver]

The bike, Easy Motion Evo Pro
The display indicates there is a 0% battery and the battery symbol is flashing, there is an exclamation mark in a triangle all flashing and the dreaded Err:13.

Checked every connector,
Checked all spring pins on display & battery connection
cleaned all connection pads
visual on all cabling showed no kinks or other gnarlyness,
Battery reads 54V with meter
Disconnected each wire/cable one at a time & restarted. No change (except main power and display wires obviously)

Anything I've missed? Shall I tie it to a motorhome and watch it be dragged off into the sunset?

 

[J.R.]

Shooting in the dark. Did you drop the controller and check and clean all those connections? I haven't had a 13 in a long time, but when I did it was always the display that lost connection. 13 communication error is usually not fatal. I had a 5 and had to replace the controller.

 

[BCBeaver]

Ya, pulled the controller and checked all connections.

 

[Stefan Mikes]

Is the display equipped with its own battery? Have you replaced that battery?

 

[BCBeaver]

No apparent way to separate the display case so I'm thinking thats unlikely.

 

[Stefan Mikes]

No apparent way to separate the display case so I'm thinking thats unlikely.

I made the assumption based on my experiences with different displays of other make/model of e-bikes. Typically, a display is powered by a button cell, accessible from the bottom when the display has been removed. With wired displays, flat cell may affect the operation of the entire e-bike. Messages about low display battery can be misleading (you think the message is about the e-bike battery while it is about the display battery). Worth a thorough inspection.

 

[BCBeaver]

It is a removeable display, once removed there is no way to unscrew the display to separate the front from the back. There is no indent where a screwdriver might be used to pry it open.

 

[Stefan Mikes]

If not the small "Open" text in this display, I wouldn't have guessed the unit could have a replaceable battery either...

 

[Stefan Mikes]

 

[BCBeaver]

I would have guessed that has a battery it obviously has a battery cover. I popped this one apart, there is no battery within.

 

[J.R.]

I would have guessed that has a battery it obviously has a battery cover. I popped this one apart, there is no battery within.

I have the other display, but the same type of contacts. I have used an eraser to polish the contacts on both display and mount. I don't believe BH displays use batteries. Mine doesn't.

 

[BCBeaver]

Every connection cleaned. all spring pin connectors springing. all cable connections checked ( and pins on connectors). all the pins and pin pads polished with emery cloth

 

[BCBeaver]

The owner of the bike found another identical bike so I was able to pinpoint the problem.

 

[BCBeaver]

Anyone know I'd find one of those?

 

[J.R.]

The owner of the bike found another identical bike so I was able to pinpoint the problem.

Anyone know I'd find one of those?

I see the cradle in your picture, was that the problem? What precisely is wrong with it?

You need another cradle?

 

[BCBeaver]

It is the cradle for the button pad, not the cradle for the display. Not sure where the problem is, options are: busted wiring at cable connector pins, busted wiring along the length of the cable, broken connection within the cradle itself. The cradle is not openable other than by destructive measures which at this point really makes no difference to the operationability of the bike I suppose.

 

[J.R.]

It is the cradle for the button pad, not the cradle for the display. Not sure where the problem is, options are: busted wiring at cable connector pins, busted wiring along the length of the cable, broken connection within the cradle itself. The cradle is not openable other than by destructive measures which at this point really makes no difference to the operationability of the bike I suppose.

There's not much to the cradle. BH used the same cradle for the side mount display, the button pad and the Bluetooth module. Same cradle for more than 5 years. There must be an issue with one of the wires going into the back of the cradle or the plug end. I think if I had to I would remove the outer wire loom tubing and inspect the wires. It should be repairable.

 

[RamStl]

Anyone know I'd find one of those?

Indications are that I have the same issue. Were you able to locate a replacement?
I found a salvage unit at a bike store but it did not fix the Err13 issue.
Replaced the battery and that resolved the issue.
I bought the spare cradle and a display since parts are so scarce.