Car Won’t Start help Clearing BMS errors

[KeepOnPushN]

I have a 2013 MS 60 . About six months ago my wife was driving the car when it lost power and error messages started to appear ( power reduced, car needs service). Towed it home pushed it in the backyard and decided I would look at it later. I suspect that the contactors went bad or the rear motor went out. I’m pretty close to just getting rid of the car. I bought it from Copart in 2018 and had it back the road in a few months after replacing a few panels and pyro fuse.

The past few days I’ve been really trying to figure out if it’s just the contactors, or is it something simple as just cleared the BMS error. Current errors are BMS_w026_sw_Ctrs_Disabled and BMS_f086_SW_Not_Ok_To_Precharge. I have root access to the car. I was wondering if anyone knows anyone that is renting out the T-diag or similar tool so I could give clearing the BMS a shot. If not is someone able to remotely clear it with Toolbox? The contactors show they are open when I was in Factory Mode. Pictures attached . I’m located in Texas near Dallas if anyone local that can help me out. Thanks

 

[DerbyDave]

The three "pump" error messages could perhaps mean the coolant pump is not working, or a sensor is bad. Of course, it could be anything. Tesla needs to run the diagnostics to determine the cause.

 

[KeepOnPushN]

Thanks for the input.

It was a salvage vehicle (rebuilt now) I really didn’t want to waste money getting it towed to Tesla just for them to tell me they don’t want anything to do with it because of its “unsupported” vehicle status.

 

[RedTesY]

The original symptoms you reported are typical of the 12v battery needing replacement. Have you ruled out that?

 

[KeepOnPushN]

I haven’t replace it, but I have recharged it with my charger. I’m not getting any 12v battery error so I didn’t think it was that

 

[danielk04]

Jack up your car.
Remove and inspect Drive Motor Speed Sensor.
Does it look like pictured below?

 

[KeepOnPushN]

I will check it out tonight when I get home. If it looks like that I take it the gaskets probably failed and allowed the coolant to get on the electronic components?

 

[KeepOnPushN]

Jack up your car.
Remove and inspect Drive Motor Speed Sensor.
Does it look like pictured below?

Here is a picture of it. What should I be looking for?

 

[danielk04]

Your sensor looks muddy goopy, probable coolant leakage into motor/inverter.
Further inspection/repair/or replacement required.

 

[KeepOnPushN]

Your sensor looks muddy goopy, probable coolant leakage into motor/inverter.
Further inspection/repair/or replacement required.

Yes I agree, I’m did some resistance check from the junction box to the motor hv wires. On one of the cables the resistance was really low. I’m gonna go ahead and get rid of the car . I don’t see dropping 3-5k for a motor. I already dropped the motor once when my drive shaft clip sheared of and I had to separate the rear motor from the inverter to get the small piece out. I rebuilt it had fun with it. I have another 2016 MS. The offer I got for this one isn’t bad so I won’t let it pass.