Dead Carrera crossfire

[frustratedbadger]

I have a 2012 Carrera crossfire which is done only a few hundred miles from new. I last used it a few weeks ago for a short bike ride around 15 miles or so without any issues.

Today I switched it on and gotten error, "display indicate code 42".
The battery was indicating 80% charge. I look the bike over and noticed that the motor connector was undone so reconnected it.
After that I've been unable to get the bike to switch on at all, it's completely dead.

I've under hatch on the bottom of the frame and slid out the controller, disconnected and reconnected everything after a good spray with contact cleaner, same with the motor connector.
No joy.

I took the battery out and tested the positive and negative terminal with a voltage tester, it shows around one volt which dissipates rapidly to 0 each time I test it.

I'm wondering if there's a few somewhere which might be blown?

 

[frustratedbadger]

Also... When in pressing down the power button on the battery (the orange one on the top of the controller has never worked for some reason), nothing lights up. Usually the LEDs light up blue but I'm getting nothing.

Could it be a dodgy power button?

 

[Kingfisher101]

I'd take it to Halfrauds to get them to look over it.
It could be anything after a decade.

 

[ebikeerwidnes]

Found this on Pedelecs forum
https://www.pedelecs.co.uk/forum/threads/carrera-crossfire-error-42-motor.39608/

quite old so might not help but might be worth looking at

 

[Drago]

I don't think it is the problem, but try resetting the battery. Press and hold the button on the battery for 30 seconds.

 

[frustratedbadger]

2022 that should have read! Not 2012. Having checked though it's actually a 2023 model!

 

[frustratedbadger]

For the benefit of anyone who finds this thread looking to fix their own, it's working.now. I dismantled the battery, it's a nightmare job. 4 screws to undo but then the case it so tightly clipped together it's impossible to pry the 2 sections apart without damaging the seam and some of the clips.

What I did once it was open is unscrew the terminals which supply the battery management board. I hoped this might 'reset' it. Left it for half an hour, redid the terminals. Still dead. Put it on charge and immediately the LEDs lit up.
No it's switching on and off as expected. Put it back on the bike and took it for a ride, all good.

 

[ebikeerwidnes]

For the benefit of anyone who finds this thread looking to fix their own, it's working.now. I dismantled the battery, it's a nightmare job. 4 screws to undo but then the case it so tightly clipped together it's impossible to pry the 2 sections apart without damaging the seam and some of the clips.

What I did once it was open is unscrew the terminals which supply the battery management board. I hoped this might 'reset' it. Left it for half an hour, redid the terminals. Still dead. Put it on charge and immediately the LEDs lit up.
No it's switching on and off as expected. Put it back on the bike and took it for a ride, all good.

Well done!!

 

[Drago]

Did you try resetting the BMS as I suggested above?