Don't know. The locks are loud, and the marker lights flash when they lock or unlock.
You should have 3 keys from the factory. Change the batteries in all 3 keys: https://www.amazon.com/Panasonic-Cr2016-Lithium-Battery-Ecr2016/dp/B00K5Y83HS/ or https://www.amazon.com/Batteries-Panasonic-Cr2016-Lithium-Battery/dp/B0045ERXE8/
Use Chevron regular most of the time, and Shell V-power occasionally, to keep the engine running efficiently. Since it's out of warranty, you can use Pennzoil Platinum 0W-16 motor oil, which improves mpg about 2% vs. the suggested 0W-20.
Drive an even-slower car once-in-a-while. 99% of other traffic will be slower than you if you floor it at appropriate times.
Trade it for a highway-cruiser like the 2016+ Prius Eco. Prius c means Prius city. Barring that, drive slow on the highway. 55 mph returns stellar fuel economy.
46 mpg × 9.5 gallons = 437 miles.
I removed the rear headrests and rear cargo cover and always keep the rear seats down. Get an all-weather floor-mat kit to keep them clean.
You have dual-mode Daytime Running Lights. The 2nd mode turns on all marker lights and tail lights, but keeps the headlights dim. I drive in that mode all the time (day and night) with the left stalk in the highbeams position. This actually keeps the highbeams off until I turn the selector to normal headlights. That way I get full-brightness and highbeams coming on at the sane time (when I need them on a highway with no traffic in front of me).

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