2014 Rex CARB California warranty.

[Calirexer1]

Hey everyone ! My 2014 rex battery seems to be bad and recently I found several messages regarding the 10 years 150 k miles CARB warranty in California. Mine is 92k miles. So the question is would it be covered under this warranty and eligible for the replacement, as it is 2025 already. If so, what are the steps to make it happen. Thanks

 

[alohart]

My 2014 rex battery seems to be bad and recently I found several messages regarding the 10 years 150 k miles CARB warranty in California. Mine is 92k miles. So the question is would it be covered under this warranty and eligible for the replacement, as it is 2025 already. If so, what are the steps to make it happen.

The warranty expires after 10 years or 150k miles, whichever occurs first. 10 years is measured from the car's in-service date (i.e., when it was first sold or leased). If your i3 was manufactured late in the 2014 model year and wasn't sold or leased immediately, its in-service date might have been in 2015. You need to ask a BMW dealer for its in-service date if you don't know it. If the in-service date is less than 10 years ago, your warranty might still be valid, but probably not for very much longer.

Another CARB state REx owner reported that his dealer claimed that the usable battery pack capacity warranty was for 8 years/100k miles while the warranty against battery pack defects was 10 years/150k miles. So what's wrong with your battery pack might govern whether the fix would be covered under warranty

 

[Calirexer1]

The warranty expires after 10 years or 150k miles, whichever occurs first. 10 years is measured from the car's in-service date (i.e., when it was first sold or leased). If your i3 was manufactured late in the 2014 model year and wasn't sold or leased immediately, its in-service date might have been in 2015. You need to ask a BMW dealer for its in-service date if you don't know it. If the in-service date is less than 10 years ago, your warranty might still be valid, but probably not for very much longer.

Another CARB state REx owner reported that his dealer claimed that the usable battery pack capacity warranty was for 8 years/100k miles while the warranty against battery pack defects was 10 years/150k miles. So what's wrong with your battery pack might govern whether the fix would be covered under warranty

How do they determine “defects”?

 

[dhdh]

How do they determine “defects”?

There's a test. Cost varies from dealership to dealership, but most of the places I called to book my test quoted 2 hours of service time plus $300 software upgrade (though it takes way longer than 2 hours). Total quote for me was $900. If your car fails the test (i.e. has a capacity of less than 70%), they don't charge you.

My car passed the test a couple weeks ago, with a score of exactly 70%. I was shocked that it passed, considering how poor my range has been. I am getting better range, post-test. I need to verify this on mine using mi3, but on the i3 subreddit, someone who had the test done and just barely passed said that the process somehow unlocks additional usable capacity, and making it that much harder to fail the test. Sounds a little unethical to me. EDIT: Just checked and mi3 gives 75% as SoH (it had previous read 67%). And Batt Kappa Max now shows 14.4 (it had consistently shown 12.8 for months).