I had the same Bluetooth connect issue with my 2018 S. After power cycling the car now for 6 years and often getting stuck when traffic light turns green and I didn't wait long enough before restarting and then you have to push power button again....I had enough of that and now figured out a fix: Reset radio via a fuse bypass switch, It's not hard to do: The 10A audio/radio fuse is on the driver side, left to dash button that opens the charging lid. Driver door needs to be open to open the driver fuse compartment. Pull out 10A radio fuse and insert this bypass switch:
https://a.co/d/gsYJBNn](https://a.co/d/gsYJBNn
Drill a hole somewhere in the dash to mount connector.
Now, you can just flip the switch to reset the radio without stopping the car! And that resets the Bluetooth connection with a chance that this time it works. If not successful, toggle again!
2018 Leaf uses 'low profile mini' fuses and I only could find the bypass switch for 'mini' fuses. It works though and some car manuals seem to state that a 'low profile mini' fuse can be replaced with a standard 'mini' fuse. Technically, the low profile fuse has higher 'interrupting rating' or 'I.R.' with 1,000A at 58VDC, and mini only has 1,000A at 32VDC. But that's still plenty and other cars only use 'mini' fuses and no 'low profile'. Keep in mind car voltage is only 12V!
And here the comparison of 'low profile' vs 'mini' fuses:
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https://www.swe-check.com.au/catalog/a14.pdf](https://www.swe-check.com.au/catalog/a14.pdf)
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https://www.swe-check.com.au/catalog/a15.pdf](https://www.swe-check.com.au/catalog/a15.pdf)