Rail (750Wh) Another rail that’s turns off

[Kaip]

I have a ‘22 trek rail 9.8 and I’ve been having never ending issues with it turning off while riding. After 5 rides on the new bike the motor had to be replaced because it died. With the new motor the bike consistently turns off on rough ground. Spoke to the trek booth at crankworks and they recommended starting a warranty claim, did the claim and they sent out foam pads for the battery. This didn’t fix it so they sent out all new rib mounting hardware, this didn’t fix it and made to worse.
Now they are blaming Bosch when the issue is clearly the battery moving. Bosch have rightly replied that it isn’t caused by them and they see a lot of issue’s caused by the rib mounting system.
Has anyone else had this?
Am I ever going to get a working bike or is the money gone?

 

[Stihldog]

Yes.

I have a ‘22 trek rail 9.8 and I’ve been having never ending issues with it turning off while riding. After 5 rides on the new bike the motor had to be replaced because it died. With the new motor the bike consistently turns off on rough ground. Spoke to the trek booth at crankworks and they recommended starting a warranty claim, did the claim and they sent out foam pads for the battery. This didn’t fix it so they sent out all new rib mounting hardware, this didn’t fix it and made to worse.
Now they are blaming Bosch when the issue is clearly the battery moving. Bosch have rightly replied that it isn’t caused by them and they see a lot of issue’s caused by the rib mounting system.
Has anyone else had this?
Am I ever going to get a working bike or is the money gone?

View attachment 124097

Yes…and it was a bother. Rough terrain would cause a temporary loss of assist.

Eventually I realigned and secured the battery (rib) and cleaned the connections at the lower bulkhead. A neighbor had a similar problem (not as bad) and this fixed it also.

It could be a number of issues but this was a quick and simple solution for my power loss.

 

[BuzzinHornets]

Have your shop check the contacts on the battery. Mine was replaced under warranty as the battery movement caused the contacts to bend resulting in disconnects. Foam pads and new battery solved the issue.

 

[Stihldog]

My Bosch app would show that I had several “short” rides when I actually had one long ride. I never took the bike to the LBS for analysis …probably because they couldn’t mimic the real world riding that I did. If I didn’t/couldn’t find a solution I would’ve taken the bike in for analysis.

 

[MOTO13]

Make SURE your bike haS the metal battery truss in there. If not...that's probably your issue.

 

[JP-NZ]

Take it back to the LBS you purchased it from and get them to fix the RIB issue. Plenty of dealers have not fitted the battery correctly or aligned the RIB properly. I can't understand some people who spend so much on a bike and then settle for less than satisfactory customer service?

 

[Kaip]

Have your shop check the contacts on the battery. Mine was replaced under warranty as the battery movement caused the contacts to bend resulting in disconnects. Foam pads and new battery solved the issue.

Will do

 

[Onetime]

Along with the correct alignment and foam pads, a little dielectric grease in the battery plug helps too.

 

[emtboulder]

At about 1500 miles my 2021 Rail 7 had a couple of unexpected shutoffs riding rough terrain. I isolated the problem to the female terminal springs for the ground (-) connection in the battery. Those two springs which grab the (-) tab on the bike were visually separated compared to other terminals in the battery. Carefully bent them closer together, one at a time, and haven't had any more problems in the last 500 or so miles. At this point, I just leave the battery in the bike all the time to limit stress to the connection. But if I have another power loss I'll remove it and add dielectric grease.

FWIW, I replaced the battery lock system with a battery bracket just before the problem arose, buy still suspect that the damage to the terminal springs was caused by battery rattle with the lock system. Can't say for sure, though.

 

[Onetime]

I had the same issue recently too with my motor cutting out on rough chunky climbs and cutting out/shutting off on rough chunky DH. When I got home, I took the battery out, blew out the whole battery compartment and battery plug with my compressor. Then I added foam strips around the sides and top of the battery, then added dielectric grease to the battery plug and (knock on wood) I haven’t had a problem since.

 

[e-mtbrider]

I had an issue where my 2022 Rail 9.8 while on a trailside break the bike would not turn on. As it turns out the wire going into the handle bar mounted power controller backed out.
Maybe yours is to a point of being intermittent.
Just a thought

 

[jgusta]

I have a ‘22 trek rail 9.8 and I’ve been having never ending issues with it turning off while riding. After 5 rides on the new bike the motor had to be replaced because it died. With the new motor the bike consistently turns off on rough ground. Spoke to the trek booth at crankworks and they recommended starting a warranty claim, did the claim and they sent out foam pads for the battery. This didn’t fix it so they sent out all new rib mounting hardware, this didn’t fix it and made to worse.
Now they are blaming Bosch when the issue is clearly the battery moving. Bosch have rightly replied that it isn’t caused by them and they see a lot of issue’s caused by the rib mounting system.
Has anyone else had this?
Am I ever going to get a working bike or is the money gone?

View attachment 124097

Tension straps outside the frame/battery should help. What I had to use on my Rail after just a few months and “fixes” by Trek did nothing like you experienced. I use two velcro tension straps at upper part of battery/frame and lower.

 

[gerdo3]

I have a ‘22 trek rail 9.8 and I’ve been having never ending issues with it turning off while riding. After 5 rides on the new bike the motor had to be replaced because it died. With the new motor the bike consistently turns off on rough ground. Spoke to the trek booth at crankworks and they recommended starting a warranty claim, did the claim and they sent out foam pads for the battery. This didn’t fix it so they sent out all new rib mounting hardware, this didn’t fix it and made to worse.
Now they are blaming Bosch when the issue is clearly the battery moving. Bosch have rightly replied that it isn’t caused by them and they see a lot of issue’s caused by the rib mounting system.
Has anyone else had this?
Am I ever going to get a working bike or is the money gone?

View attachment 124097

Similar problem on my cube stereo hybrid, kept cutting out, finally when took in to lbs and it wouldn't take software update, lbs finally traced to kiok display mount, the circuit board inside the kiox holder was cracked, so replaced with new holder £20 then bike started taking software and so far no more cutting out

 

[ilostmypassword]

I would demand a refund or a full replacement. Ridiculous.

 

[Kaip]

They sent a new battery and that has fixed the issue. Have been trouble free riding for a few week. I suspect the cause was the old mounting hardware which trek has updated.