Does anyone know what the warranty impairment for older Model S & X's was for? Are they planning on needing to replace batteries or something major that it would be worth mentioning?
Based on older Warranty Week contributor analysis and some limited conversations I suspect the following three items to be mostly responsible for that impairment, which is unprecedentedly for Tesla, which typically overstates accruals:
1. Legacy 90 batteries, which were problematic and now nearing warranty end;
2. The Ludicrous versions which initially had had substantial issues;
3. Some motor and BMS issues especially with high mileage older versions.
Obviously there could be several other factors that could be specific to severe weather conditions, but there seems to be less of those.
Since Tesla does not disclose these items they are perforce based on anecdotal clues.
In short, these are guesses!
One anecdote: an acquaintance of mine has a 250,000 mile Model S 100D that began life as a 90D. It has had four pack replacements, at least two motor replacements and 'several' replacements of inverters and charging components. All of that was within what was then unlimited mileage 8 year warranty. Soon we'll undoubtedly have direct reports in the relevant threads. Those reports will probably help us understand the unexpected addition to warranty expense.
note: thus far we do not know heather that was an addition to warranty reserves or excess charges during the current period. That is, the extra ex[ense could ahem been demanded by accountant actuarial assessments or could be actual expenses higher than original reserve contributions.
That difference should be arcane, and it is, BUT the difference is fundamental since the former could be the conservative accounting and the latter indicates actual incidence of problems. It is useful to recognize that such a charge has not IIRC ever happened with Tesla, where warranty charges and reserves have been steadily improving since, IIRC, 2012.