How to turn off?
2011 - you have a factory built-in dash switch to do just that
2012 - you’re out of luck. No easy way to disable. Some owners have wired in a switch ala 2011.
2013+ - LeafSpyPro (just get it already if you haven’t, and not just for this purpose).
That said, there are other and extensive threads on this forum discussing pro’s and con’s of disabling what could be considered a manufacturer’s built-in safety feature and the biggest con discussed is the potential liability. To my albeit limited knowledge, there is no case law yet so all is conjecture with very rational arguments on both sides. Here are mine:
1- It is always the driver's responsibility to not hit anyone/anything. Doing so pretty much guarantees a lawsuit, beeper or not.
2- The factory backup beeping was optional for 2011, i.e., you could turn it off. Would those vehicles have some sort of beeper risk exemption?
3- Many cars, not just EVs, are very, very quiet, or not heard because ambient noise levels are high. Few other than the EV have backup warnings other than backup lights and, oh yeah, the sight of a large multi-thousand-pound moving object.
I agree certainly that in general more presumed safety factors are better than not, and the backup beeper is probably one of these. I also agree with some posters that an optional ability to turn the beeper off is actually the best approach, to accommodate those of us backing out of garages in the early morning, hospital area parking, and other designated or expected-to-be-quiet areas.
Lastly, and I don't know the answer to this, do people really pay attention to backup beepers anymore? Even today in any busy area there are so many such beepers and other noise pollution, my skepticism leads me to believe most sounds are just automatically tuned out, or masked by ear pods tuned to some favorite news or music channel. This doesn't negate a beeper's potential safety aspects, but I think it would be very, very hard to prevail in a lawsuit against someone solely about a non-operational beeper.
Bottom line, if I didn’t have a 2012, I’d disable my beeper in a heartbeat.
Nissan 2012 LEAF SL, 13,500 miles, 9 bars, 35-mile range
Tesla Model 3: Long Range Rear Wheel Drive | Extended AutoPilot | Full Self-Driving | HW3 Upgrade
Delivered: July, 2018 | 15,500 miles | PM me for Tesla referral code