BMS_u031 - Battery fuse requires replacement soon - Some questions...?

[Fragger]

Hello All,

Seems like several threads on this warning, but wanted to confirm some specifics and latest information:

1. My S is P100D, 2016.5, I scheduled service, but the nearest appointment available to me is over a month away! With this error, is the car actually safe to drive? Or should I be sidelined for until Tesla makes time for me? Should I drive with some precautions?

2. Can anyone confirm if Tesla will cover part or all of this repair under the 8 year battery warranty? I've read both ways. What's the latest?

3. If not covered by the Tesla battery warranty, do any of the 3rd parties cover this like CarShield or XCare?

4. Anything else I need to know?

Thank you all!

 

[luckyj]

Just got this warning today and having a similar issue. Ugh...

 

[Fragger]

Just got this warning today and having a similar issue. Ugh...

Sorry to hear, friend! Hope this is covered for us all!

 

[Tam]

Hello All,

Seems like several threads on this warning, but wanted to confirm some specifics and latest information:

1. My S is P100D, 2016.5, I scheduled service, but the nearest appointment available to me is over a month away! With this error, is the car actually safe to drive? Or should I be sidelined for until Tesla makes time for me? Should I drive with some precautions?

2. Can anyone confirm if Tesla will cover part or all of this repair under the 8 year battery warranty? I've read both ways. What's the latest?

3. If not covered by the Tesla battery warranty, do any of the 3rd parties cover this like CarShield or XCare?

4. Anything else I need to know?

Thank you all!

1) your car still drives fine. It's a high voltage safety issue for first responders in a crash.
2) in the beginning, Tesla didn't cover this but after complaints they now do.
3) I didn't see why not covering it.
4) Don't freak out as long as your car doesn't crash. If it does, it's a safety issue for first responders, not yours.

 

[EarlyM3Owner]

This is pretty common now, lots of people see it. You don’t necessarily have to do it immediately, I don’t think it’s a safety issue per se. The fuse is covered under the battery factory warranty. I do think Xcare covers it too if you have it.

 

[j.harris]

The original pyro fuse design uses a non rechargable battery to detonate the charge which isolates the battery from the car in the event of a crash. The non rechargable battery in the original fuse is not monitored, the car doesn't know if it is dead or good, so it puts an expiration date on it so hopefully it is replaced before the fuse battery dies.

The new fuse design which will be installed uses a capacitor that is charged from the HV battery. There is no concern about the fuse expiring like the original design so this should be the last and only time you have to replace the fuse.

 

[gaswalla]

Just got it today too! P100D.
Set up appointment right away for next week. And got my estimate for $0.

 

[White Lightnin]

I had mine done a year ago. I drove it for four weeks before service appt was available. No problem (other than the constant warning on the screen!). Car drove fine. Warranty covered it.

 

[Fragger]

Thank you so much for the helpful responses, my friends!

To summarize, it seems it's:

1. Safe to drive while the service appointment comes.
2. Should be covered under Tesla battery warranty?
3. Should be covered by 3rd parties as well?

Is that right?

Thank you all!

 

[j.harris]

I drove a few months with the alert on. The only thing that made me get it fixed was my battery coolant heater having isolation faults so I had both replaced at the same time.

 

[Michelx]

Can this fuse replacement be done by a Ranger?

 

[Ciaopec]

Can this fuse replacement be done by a Ranger?

No. At least mine wasn't . Though I was in a distant city and had to have batter heater replaced so they just did it all in the shop. However, my local shop also had me down for a service center visit; no ranger.

 

[David Harvey]

HV battery pyro fuse alert

 

[Wurzig]

P100DL here. Got the same alert as well. It's very interesting that a lot of us all got it at the same time.

 

[Fragger]

P100DL here. Got the same alert as well. It's very interesting that a lot of us all got it at the same time.

Yes, that part is weird! No word from Tesla yet on possibly pulling in the appointment date. For now, just driving without fear, as told by fellow forum members here.

 

[bobbob160@gmai]

I got this message the other day, made an appointment less than a week out. We had this done on our other MS and it was a simple, 8yr drive/battery warranty free repair.

The reason for the fuse replacement. The original fuse has an onboard battery to monitor the HV battery and trigger the fuse to blow when needed. That battery has reached end-of-life (this is by the calendar and not by measuring the onboard battery power). The replacement fuse gets it power from the main pack and will not need replacement in the future.

 

[luckyj]

Sorry to hear, friend! Hope this is covered for us all!

Appointment is scheduled for 2 weeks out, cost $0.

Glad to see the additional notes on what this is about, doesn't seem like it would lead to the vehicle not being drivable. Still makes me nervous seeing that in the car all the time

 

[Fragger]

Appointment is scheduled for 2 weeks out, cost $0.

Glad to see the additional notes on what this is about, doesn't seem like it would lead to the vehicle not being drivable. Still makes me nervous seeing that in the car all the time

Thanks for sharing... mine isn't scheduled for about 3 weeks out. I guess, until then, no updates for me ...

 

[⚡️ELECTROMAN⚡️]

Got the message Friday morning, a week ago.

"If I owned a Tesla with the pyro fuse mounted on top of the HV battery (Gen. 1 and Gen 1.5 batteries) then I would preemptively pay a company (such as Cedar Electric or Tesla Specialist Birmingham) to drop the HV battery, replace the fuse cover, clear the ski rail drains plus replace the umbrella valves and Rapid Mate seals. This could be a very cost effective piece of preventative maintenance because if you wait for the HV battery to fail, the cost of repairs might be ten times as high."

Any idea how to know if we have a Gen. 1 or a Gen 1.5 battery?

 

[BCCA]

Look at the bottom of your battery pack near the front wheel on the passenger side. If you see an access plate to the pyro fuse, you do not have a Gen 1 or 1.5 battery.