Update:
So yesterday I got the dreaded “auto stop/start needs service” Light and warning. At the next motor shut down and start, same day, warning light was off and all working normal again.???
This is so bizarre🙈
2021 Mojave, 38 months old with 35,0000 miles.
Auto start/stop quit working at 24 months, dealer replaced aux battery under warranty. Took 1 week for auto start stop to start working again.
3 months ago auto start stop quit working again.
Pulled the 42 fuse and the negative lead from the aux...
Im on my first 5000 miles using Molygen, 0w20.
And have noticed a 1 mpg gain in mileage.
My first 30,000 miles my running average was 17.5. My last 5,000 miles it was 18.5.
Will continue to use to see if this is legit or just an anomaly.🤔