Ferrycraigs
Member
The Warranty is very specific about range estimates, in that, it’s a variable thing, you should expect great variations. Indeed you should also expect degradation, which indeed we should. So I think any discussion with them about loss of Range or degradation is always going to be difficult. I would suggest any discussion should be about loss of Capacity. After all you bought a car with a specific battery capacity. Yes you will lose a bit through degradation, but a whole chunk overnight will always be hard for Tesla to explain away. Software limiting of the battery is not degradation in my book. It is an artificial restriction. As far as my car is concerned, I bought a 70 kWh battery, it dropped to 68.5kWh pretty quickly (as is normal) and stayed at that figure for 3 years. Then it suddenly dropped, overnight, to 58.5 kWh after downloading 2019.16.1.1 in May 19. So obviously my range is going to reduce (has reduced) as I now have a smaller battery. But Tesla have arbitrarily, and without my consent, or knowledge, fundamentally changed the battery capacity to that of a lesser model. And as far as I can tell, because they continue not to explain why, for no legitimate reason.I posted the actual text of the warranty above. The relevant provision is:
Note that the vehicle’s range estimates are an imperfect measure of Battery capacity because they are affected by additional factors separate from Battery capacity. The measurement method used to determine Battery capacity, and the decision of whether to repair, replace, or provide reconditioned or remanufactured parts, and the condition of any such replaced, reconditioned or re-manufactured parts, are at the sole discretion of Tesla.
In other words, it isn't that everything in the warranty is at the sole discretion of Tesla, but the method of battery capacity and related range and degradation calculations are at Tesla's discretion. That is a simple plain term of the warranty there for anyone who bothers to read it. NCDS read it.
It would be better if the S/X warranty had a more specific degradation standard like the model 3, but it doesn't.
The Warranty does say that they remain the arbiters of how to calculate capacity, but there are a number of credible methods that we as owners can employ to demonstrate a significant and sudden reduction in capacity.
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