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Battery fuse changed with HV battery? Warning mag
- Thread starter peakay
- Start date
GHammer
Dark Star
The probable reason you're getting the warning is because the HV battery was replaced. Your original battery didn’t have the pyrofuse that had the limited life. The new battery they put in has the pyrofuse that has its own battery and has a finite lifetime.
Weird, the old one didn't and the new one does? Are you sure? The part # matched with the original and it was a ne, not refurb battery.
Just go to the service center and have the fuse replaced. There is nothing we can do here on this forum over the internet. Tesla doesn't care that the battery was replaced 6 years ago. If you don't want to deal with Tesla then take it to someone who can replace the fuse they aren't expensive, it's the toolbox software that is needed to reset the warning that is.
GHammer
Dark Star
Yes, from 2012-late 2015 the batteries had a simple non-powered, maintenance free main fuse. In order to enable Ludicrous mode and allow higher currents to be drawn from the battery, Tesla replaced the main fuse with an active, non-rechargeable battery powered, pyrofuse in packs made after late 2015 until they started making them with a maintenance free design again later. If your pack was replaced with a new one in 2018 it probably has the pyrofuse with the time limited battery in it. My 2014 and early 2015 S's have the original passive fuse and have not needed any fuse maintenance on them.
Separate question, if the pyrofuse timed battery was designed in 2018... What does it say about a 2016.5 P100D with the error/message to replace the battery? Is it a safe bet that the car likely had a battery replacement after 2018?
Appreciate your knowledge.
GHammer
Dark Star
Reread my post, pyrofuse was implemented in late 2015. A 2016.5 car has always had it.
vcor
Tech Specialist
I think you are confused, The pyro fuse with the internal tiny battery started around 2015. So a 2016 S will have the time-limited pyro fuse. I'd say the warning message has nothing to do with a replaced pack (or lack of one) in your 2016 S.
The original poster had a 2013 S, which had an upgraded pack that came with the Pyro fuse with a tiny battery. Any car that gets the warning should get the pyro fuse updated to the new design that eliminates the need for the battery. It's very clever engineering. The cost to do this replacement/upgrade at Tesla is very reasonable.
"Reasonable" is subjective... Tesla quoted me close to $1k to replace mine, and I'm not happy about it. All of the goodwill that his company has built up with me over the past 5 years is getting depleted rapidly.
They state that it's reasonable because they probably never had to pay to replace the fuse on older model s. The oldest versions of these batteries has the fuse placed on the top, the newer ones are on the bottom. You have to remove the battery to replace the top mounted fuse, the lower mounted ones can be done easily from the bottom.
Your high price likely means your battery has to be removed to replace the fuse.
Your high price likely means your battery has to be removed to replace the fuse.
The least Tesla can do is not profit from this repair. They are charging me labor rate of $305/hr and I know their techs don't make $600k+ per year.
If this was in the $200-300 range, I would have sucked it up and not even been here posting. I feel like this is a classic example of "penny-wise and pound-foolish" greed being displayed by Tesla.
If this was in the $200-300 range, I would have sucked it up and not even been here posting. I feel like this is a classic example of "penny-wise and pound-foolish" greed being displayed by Tesla.
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