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Tesla 2021 SR+ Won't drive (BMS_a151 BMS_a192 BMS_a035)

Dec 31, 2020
7
8
Orange County
After 1.5 Months of waiting, I finally received my delivery last week on 12/28.

This morning, I go to my car and get three error messages: BMS_a151, VCFRONT_a192, BMS_a035

The gear will not change to either drive or reverse even though it had 208 miles of range. I called roadside assistance, and they towed my car. After 3+ hours of waiting, I still have not heard back from the service center, and just stuck without a car.

What can I expect from the 3 error messages in terms of duration of the fix or the severity of the damage? There seems to be different but limited explanations online.
 

Nickage87

Member
Nov 28, 2019
112
33
USA
After 1.5 Months of waiting, I finally received my delivery last week on 12/28.

This morning, I go to my car and get three error messages: BMS_a151, VCFRONT_a192, BMS_a035

The gear will not change to either drive or reverse even though it had 208 miles of range. I called roadside assistance, and they towed my car. After 3+ hours of waiting, I still have not heard back from the service center, and just stuck without a car.

What can I expect from the 3 error messages in terms of duration of the fix or the severity of the damage? There seems to be different but limited explanations online.
Looks like your 12V battery has died. Try replacing it in advance next time. Winter and old batteries dont mix well.
 

camalaio

Active Member
May 28, 2019
1,483
2,095
Vernon, BC, Canada
These appear to be isolation faults, but I'm not sure of which kind exactly. Something of some voltage (maybe high voltage) is touching something it shouldn't, or insulation has been damaged or chewed (rodents can do this).

You'll definitely need the Service Center to evaluate what has happened, as the cause can be quite varying which also means the fix time can be quite varying. It's doubtful that any massive damage has occurred (the car does isolation tests to make sure nothing, including people, get damaged), but do keep us updated!
 

rmh9

Member
Oct 21, 2020
16
46
Ontario
Ouch! I guess I'm lucky that my brand new 2020 only had a paint defect (requiring 3 days in a body shop) and a non-working camera (requiring a full day at Tesla service). Hopefully the process won't take a month like mine. Your issues are obviously very urgent though, so hopefully Tesla will pull through for you. Good luck and please do share the results!
 
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dmurphy

Woof.
Dec 7, 2018
3,544
4,734
New Jersey - Morris County
UPDATE:
I got a call from the service center just now.
The issue was with the AC Compressor and the harness.
They need to order the parts, so I am still in the dark on how long this will take.
thank you everyone for the feedback.

Did they offer you a loaner vehicle? They should. If not - don’t hesitate to give them a call and request one if you need it.

Sorry to hear about the failure but the good news is that, once fixed, you’ll have hundreds of thousands of miles of great driving!
 

dmurphy

Woof.
Dec 7, 2018
3,544
4,734
New Jersey - Morris County
Looks like your 12V battery has died. Try replacing it in advance next time. Winter and old batteries dont mix well.

First and foremost, WRONG. Problem is with the AC compressor.

Secondly, the car was delivered a week and a half before the problem - how much “in advance” did you want the OP to unnecessarily replace their battery?
 

alexgr

Member
Aug 13, 2019
650
531
Tulsa
Well... Tesla has achieved the deliveries target, at least it's good they didn't forget to equip your car with all 4 wheels.

Unfortunately, while Tesla is rapidly growing and we keep buying their cars faster than they can make them, it will be hard to expect a lot of improvement in their manufacturing culture. I love the car for its design, driving, and software, but the quality is not the brightest side of Tesla.
 

Phlier

Bluebird
Jun 12, 2019
1,475
1,852
Utah
Interesting that the problem was in the AC system. I thought that BMS codes were in the "Battery Management System" family of faults.

Sorry to hear of your problems with your brand new car. :(
 

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