Help! Yamaha System randomly turning off

[chris_n]

That sounds like the battery in the display to me.

 

[Ray Winder]

I have a Haibike with a Yamaha system, twice it cut out going up a long hill. When I took it fior it's after sales check over they said it was the battery disconnecting which caused it .
I noticed the battery which sits in the frame did not push fully up to the connector at the top so I loosened the screws holding the locking mechanism at the bottom of the battery, then pushed the battery fully up onto the connector using a plastic lever, then I adjusted the locking mechanism up slightly so it now sits fully engaged on the top connector.
Had to play around adjusting it until i could get the battery in and out without too much hassle but it seems OK now.
Don't know if this helps others but worth a look.

 

[chris_n]

I have a Haibike with a Yamaha system, twice it cut out going up a long hill. When I took it fior it's after sales check over they said it was the battery disconnecting which caused it .
I noticed the battery which sits in the frame did not push fully up to the connector at the top so I loosened the screws holding the locking mechanism at the bottom of the battery, then pushed the battery fully up onto the connector using a plastic lever, then I adjusted the locking mechanism up slightly so it now sits fully engaged on the top connector.
Had to play around adjusting it until i could get the battery in and out without too much hassle but it seems OK now.
Don't know if this helps others but worth a look.

That wouldn't cause the milage resets.

 

[tureek99]

That wouldn't cause the milage resets.

That what i was thinking as well. As the Speed counter working ok all the time and mileage and trip counter work till shut down and then its resets to 3km and as well put assist to the High.
Honestly it so annoying to buy a new bike from shop in 2025 and then end up with some issue which is apparently known from 2020
One thing when motor shut riding down hill and you can switch back on when you down, but its another story when it shut while you ride up hill and there the car behind you. as its still takes like around 5 sec to turn it on back and its start assist to the pedals.

 

[tureek99]

So... finally after 3 weeks of repaire i got my bike back... Merchant told me that this issue known by Yamaha and only way to fix it this issue ... it's replace the motor. Soo my motor was replaced by warranty and i got my bike back.

 

[saneagle]

I remember in the early days of the Yamaha system there were a lot of cut-outs reported that were attributed to the temperature sensors, as they mainly did it after a steep climb. Maybe some are still wrongly calibrated or something like that.

 

[soundwave]

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