Search results

Hi, any update? JCM

Thanks for the update, Did you receive more errors when disconnected the rear motor?

Did you ckeck if there's voltage in the HVIL? I think you have something disconnected in the HVIL, because your are getting only w036 and f036 codes, no more codes related with your DU, so that it isn't likely that your DU has faulted... I think! I'm not sure if the MS HVIL circuit match with...

Wich faults are you getting right now? Do you have BMS_W126? Did you measure your car´s internal/external isolation? I recommend you to measure the isolation of each component: PTC, AC compressor, battery coolant heater and compare it with the expected value... Please keep us informed about...

Try to push gently but firmly the rapid splitter just in the ground screw, Hope this helps!

Hi, This is just to tell you guys that I already fixed my car, that's a really good news! :) It only took a little push on the upper side of the HV branch connector (rapid mate) to "accomodate" the blades and pins on the battery pack, inmediatelly BMS_w126 and BMS_f036 disappeared...

Hi, HVIL on the battery side is OK. I don´t sure but I think that the HVIL on the battery side is the circuit from the 20mA constant current source from the battery to the switch on the socket that connects to the HV rapid mate,,, can someone confirm it or correct it if I wrong? Anyways, I...

@Travieh5 thanks for your comments. Would be voltage at the pin 11 of x35 connector if the contactors are open? As I understand if the contactors are open the HVIL are power off, so, in order to figure out if the loop is closing it is needed to measure resistance between the pins to ground...

Hi, Yesterday I put the car in service mode plus and see an internal isolation value of 3.6MOhm... fault f123 disappeared, but f036 apperead (HIVL issue), so I moved my case to this thread. Thanks,

Hi, I have the same faults/warnings (w036, f036, w126) on my 2014 Model S P85+, the contactors are open. What would you recommend me to find the issue? Best regards,

@Chickenboy81 EV Clinic staff says about BMS_F123: You must fix cause of issue [low HV internal isolation] then send us BMS for reprogramming I don't know if change the BMS instead of reprogramming it will solve the problem... what do you think?

Thanks @Chickenboy81 very important information... They said that once this kind of failure has been detected, the battery pack must be dismounted inmediatelly to fix the problem, due to the risk of total damage... at what kind of damage could be our cars be exposed? My car has only BMS_F123, i...

Can you please tell me where exactly is located this ground stud? Thanks I think this is triggering you fault BMS_u029. Once you fixed it replacing the BMBs, I think that you'll need to reset your BMS to "erase" the fault

Hi, This is very interesting information that you guys are sharing. As my HV Battery Pack fuse blown, it is likely that some shorted HV component or its isolation has compromised , so I plan to measure the HVIL isolation of each HV components: a) connected devices to the HVJB (battery coolant...

Hi, Does someone have connected a salvage car M3/MS to the Tesla Toolbox Software? Thanks,

Any news on this matter? Did you guys find the solución?

Did you find a solution?

See this procedure

Thanks for the photos, certantly the ground cable looks corroded, might be would be good to change it as a preventive action, but I think this isn't causing your low HV isolation, since your contactors are open and the rapid mate is downstream the measurement point... I'm interested in to...

Can you please send photos of the corroded area?

Thanks, absolutelly this is the next step in the process!

As far as I know, an open circuit tends to increase your resistance... This is just a hypothesis, but I think the lower the resistance (according to Tesla Benchmark, your internal resistance is 4% of the expected value), the more likely it is an insulation fault somewhere on the HV internal bus...

In fact, as your battery pack has the contactors open, the BMS_Isolation_Resistance of 80kOhm you are reading is your battery pack internal isolation . The expected value is at least 1800kOhm (4% of the expected value)..

I need to check the internal isolation value of my battery pack. How can I acess to Service Mode Plus?

Yes, this is what we need to do. First thing is to know if the failure is internal or external at the battery pack. The Tech Note: Troubleshooting Isolation Faults, states that when the contactors are open the isolation measurement should be greater than 1800kOhm, so defenitely you and I have an...

I think so too!

At least this are good news, isn't? :)

Interesting topics, you have done a great work documenting all your findings, much of this can help to apply preventive actions to avoid isolation problems (much of them comes from moisture and dust cumulating on the components connectors)... I plan to check the HVIL starting at the PTC that is...

Thank you very much for your advice. Interesting, I will check the connections on the DC/DC converter, I am not sure if the fuses of PTC, coolant heater and eAC of the Gen2 DC/DC converter are inside the case as the Gen1 DC/DC, do you know? Since I have a fault BMS_F123 (low HV isolation...

Not yet. A couple of weeks after my last post (dated on October 28th), It apperead another fault: BMS_F123 (Low HV internal isolation when pack contactors are open). I am puzzled since when it appeared, fault BMS_F080 disappeared... Last week I dismounted the battery pack to change the HV Fuse...

Jason, My Model S VIN is 31XXX, the car have had a failure BMS_F123 related to "low HV internal isolation" on it... Since the failure is related with the low HV internal isolation when contactors are open, do you think is likely moisture inside the pack and this moisture is triggering such...

Hi, I have the same problem a fault BMS_f080: pack voltage does not match sum of the brick voltages, unafortunatelly I can't get into factory mode to see the battery pack internal voltages... but seems to me the same problem, the contactors or the HV battery pyrofuse... I will dismount the...

Pregunta: hola, tengo los mismos errores, despues de un pequeño choque, no se dañó nada pero no me deja circular D ni R, alguien sabe como borrar los errores? Question: hello, I have the same errors, after a small crash, nothing was damaged but it does not let me circulate D or R, does anyone...

Thanks, Excuse me, did you mean behind the panel as shows the image?

Hi, I have a Tesla Model S 2014 P85+, I am interested in to buy a subscription of the Tesla Software toolbox 3, but before I tried to looking for the 4-pin connector to plug in the ethernet cable needed, behind de cubi , but I can't find it... it isn't there... I only found the OBD2...

What happened with your car? Can you give us an update?

Hi, I have a Model S 2014 P85+ Last Monday I was driving it near from my house in Guatemala, but the car suddenly stoped with the warning: “Unable to drive, supply voltage too low”… I thought that would be a 12V battery failure, so, on my own, I replaced it for a new one. Yesterday, after...