2015 REX won’t start while driving

[Tbrown3313]

I have 2015 i3 REX. The ReX starts and runs fine with manual startup in emissions testing mode. It will not kick on while driving when needed. Any help is appreciated.

 

[rcpmac]

Not a power user here but what do you mean by "when needed"? At 6% remaining battery? I believe that is the programed state of charge trigger when REX kicks-in - at least it does so on my 2019

 

[Tbrown3313]

Yes, it does not kick on at 6%. It will continue to use electric power until it is completely dead.

 

[TedStriker]

Do you have 'hold state of charge' available? Any error messages?

 

[Bat66]

Just spotted this thread. I have a 2013 REX. IF I run the car 'cold' i.e. it has sat for a while the REX will not cut-in and I get the drivetrain failure error. However, if I start the engine and let it run a few minutes before a drive, it will maintain the battery level as it should and no error pops up. Again if I then stop for a coffee or something for too long a break, then get back in and drive the REX fails to cut-in and I get the drivetrain error.

Being a UK variant the maintain battery <=75% charge is by default an option, even if I don't have this set, at some stage while running the car just on battery it will again pop-up with the drivetrain error.