Powertrain Problem; ID 276; BSM: V_ESS Too Low During Precharge

[Hsujonn]

400v Controller upgrade - GS Technology

Thank you!

 

[DeedWest]

Thank you!

What version is your Roadster? 1.5 or 2.0?

 

[Hsujonn]

I have the 1.5. Definitely going to dig into this issue and find out where the water intrusion lies and see if there's a fix.

Update: i let the roadster sit for two days in a warm garage to let the water evaporate and it's taking a charge! phew...

 

[DeedWest]

I have the 1.5. Definitely going to dig into this issue and find out where the water intrusion lies and see if there's a fix.

Update: i let the roadster sit for two days in a warm garage to let the water evaporate and it's taking a charge! phew...

With the 1.5, this is what I was going to suggest. In intense humidity, it can throw these faults but just needs to sit for a day or two. This happened to my 1.5 after I drove through a storm in Texas and tried to charge in a humid parking garage. It didn’t take a charge until the morning.

If you can get it to turn on, a tip I learned was to put the vehicle in Drive, hold the brake, and accelerate lightly to push some amps (8-12A on the screen) through the motor and heat it up. This allowed me to charge.

 

[DanielFriederich]

since 1.5ers use part of the coil of the motor when charging (TZero patent) that makes sense. Otherwise it sounds much for trouble (moisture) in the DC/DC converter in the front.
One guy disassembled it and changed the faulty parts; can't find it back but I guess it was on the Facebook Roadster group...

 

[X.l.r.8]

I’m not sure that was ever brought to a successful conclusion. I remember him changing components, but then I thought he ended up having to replace the unit, but I don’t remember. It was a very descriptive post though