Tesla Model S 2013 bms errors

[michalez]

Hi Everyone,

I have a problem with a 2013 Tesla S. There was a problem after charging overnight and the car could not be driven. After some time, the errors disappeared and came back. After 10 days of standing, I wanted to open the car, but it didn't work. I connected 12v in an emergency and the car came to life. There are no errors at the moment but I know they will come back.
The HV battery was replaced with a new one under warranty a year ago.

Please give me some tips

Below is a list of errors.

BMS_f011_HW_Illegal_Ctr_Req	Unable to start vehicle Service is required	CPLD detected a condition preventing contactor closure	customer, service-fix, factory
BMS_w010_SW_Neg_Contactor_Drive	Service is required Schedule service now	unexpected current level through negative contactor drive circuit	customer, service-fix, factory
BMS_w011_HW_Illegal_Ctr_Req		BMS_w011_HW_Illegal_Ctr_Req	service-fix, factory
BMS_w086_SW_Not_Ok_To_Precharge	Unable to start vehicle Service is required	Some conditions preventing the BMS to allow precharge and contactor closure	customer, service-fix, factory
GTW_w017_accLoadShed	Electrical system power reduced Vehicle may shut down unexpectedly	GTW_w017_accLoadShed	customer, service
GTW_w018_hvacLoadShed	Electrical system power reduced Vehicle may shut down unexpectedly	GTW_w018_hvacLoadShed	customer, service
GTW_w157_lowVoltageSupportFault	Power reduced Vehicle systems shutting down	GTW_w157_lowVoltageSupportFault	customer, service
GTW_w405_12VNotSupported		GTW_w405_12VNotSupported	service-fix

​

 

[howardc64]

Since car is 2013 and in Berlin (presumably sees rain, how about salted roads?) Disconnect and clean DCDC1 HV connectors. See below. Be sure to know how to disable HV safely before touching the area.

13 MS 85 can't go into drive, recent LDU rebuild, some clues from clicking sounds

73k miles. Won't go into drive with a bunch of error codes (looks like HV loop disabled). LDU rebuild completed ~ 2weeks ago and driven 350 miles before this problem. Error codes shows repeated attempts to connect HV (presumably to charge 12V and heat battery?) until 12V got too drained and...

teslamotorsclub.com

 

[michalez]

Since car is 2013 and in Berlin (presumably sees rain, how about salted roads?) Disconnect and clean DCDC1 HV connectors. See below. Be sure to know how to disable HV safely before touching the area.

13 MS 85 can't go into drive, recent LDU rebuild, some clues from clicking sounds

73k miles. Won't go into drive with a bunch of error codes (looks like HV loop disabled). LDU rebuild completed ~ 2weeks ago and driven 350 miles before this problem. Error codes shows repeated attempts to connect HV (presumably to charge 12V and heat battery?) until 12V got too drained and...

teslamotorsclub.com

dcdc looks clean like new one.

 

[howardc64]

dcdc looks clean like new one.

Mine looked new too and connectors looked fine but connectors contacts were the failure point. It’s a high moisture area. Windshield water runoff has a drain dump just behind DCDC1 (then drips onto fuse cover) and wheel liner has big hole at upper control arm to spray water inwards and backwards.

DCDC1 Connectors have rubber seal inside for moisture protection but again it’s a moisture rich area. DCDC1 case and these connectors will have water drops on it every time driven in rain.

But of course HV problem could be anywhere in the HV system and not just DCDC1. Hard to find failure area and your problem is intermittent. I guess best time is when car stop driving and follow Tesla procedure to test HV system.

Need to be knowledgeable on HV safety working around any part of the HV system. It’s deadly.

Anyway. Good luck.