Day light savings time.

Might have something to do with not all states changing over to DST.

 

Interesting. My 2016 Ram changed the time to DST automatically. You'd think Prius Prime would have the latest most advanced technology.

 

okay so my time is updated but the clock up top isn't updating.

Any suggestions?

 

You need to update the time in the Nav settings, as well as in the settings for the dashboard display.

Meanwhile, Toyota engineers are still researching how to synchronize two clocks in a car...

 

The clock on the dash can be changed via the info display settings using the steering wheel controls.

 

Thanks - how do i get to that SETTINGS menu?

 

Navigate all the way to the gear icon on the right and the time related settings are the first few at the top of the list.

 

DST caught me too. I hadn't been in the car since Friday. Departure time set for 5:30 AM. When I left it had 50 min til full. Showed 26.4 EV but should have been around 28.4 from past experience. So 93% full but 15% time remaining.

 

Reminds me, my BMW i3-REx probably 'preconditioned' an hour later. Doesn't matter because I've been driving the Prime this week and haven't updated the clock on it either.

You know the web site stability has been much improved since Daylight Savings Time.

Bob Wilson

 

I was really impressed when my auto-set wall clock actually changed to DST by itself. The mechanism cost about $16 and does not use the radio broadcast time signal. I don't understand how it knows when to change - it came without the battery installed. Anybody take one of these apart or know how it maintains the date without the battery installed?

 

I've got two of these clocks radios that were made before GW Bush changed when daylight savings time occurs. Now I've got to change these clocks manually a number of times each year.

 

You would think that with all the sophisticated software in the system, that Toyota engineers would be able to connect the clock in the multi-function display to the one in the NAV system, where the GPS is. With both the time (down to microseconds) and location info (down to a couple of feet), the system can determine the local time. The Safety Connect system can get the location info from the GPS. Why can't the clocks?

 

That would be a great leap in technology. Look for something like that in 2030.

 

In the continental U.S. the so called "atomic clocks" in your home get the time from the government owned shortwave radio station WWV in Ft. Collins, Colorado. In many areas it can only pick up this signal at night. The WWV time signal includes an indication of when DST begins and ends, clocks that utilize this bit of information are not affected by changes in the DST schedule. Clocks that don't utilize this information instead use a built in DST calendar, which works fine unless the schedule changes like it last did in 2007, then you either live with it or get a new clock. Either type of clock contains a setting to turn off automatic DST in areas that don't observe it, although in continental U.S. it's now only Arizona that doesn't, because they believe it would increase air conditioner usage in the evening.

Meanwhile the time on your computer is set via the Internet, based on your time zone setting in Windows or Mac OS.

Your cell phone clock is set via the cellular network (which also knows where you are).

Your GPS (portable or built-in) time is set by the radio signal received from the GPS satellites. Of course your GPS also knows where you are (if it doesn't you need to get a refund)

Some FM radio broadcasts have a time signal embedded using a standard protocol known as Radio Broadcast Data System (RBDS). Although I am not sure how many consumer devices actually use this for clock setting.

And finally this leaves our lowly dash clock. GPS would seem to be the obvious choice for obtaining the time, however since NAV is still optional in most vehicles, many auto makers presumably prefer to save a few bucks by just having one dash clock that works in all trim levels. Not sure how that explains it in the Prime, since NAV is standard. Maybe Prime shares the dash clock with the liftback? But whatever the reason I am sure it falls into the category of saving a few bucks.

 

Answer my own question... The $16 auto-set clock mechanism that I have uses a small battery to maintain the date when the larger battery is missing/dead. If the rules change, I'll just buy another $16 mechanism with the updated rules.

 

People have mentioned that there is a time on the navy system and on the dash. Where is the time on the navigation system? I've looked and looked on my advanced and don't see it!!

 

The setting is found in the navigation system by pulling up the navigation system menu, selecting settings and looking in the general settings. There is a system time setting under the general settings. You will find options here. The option you should need to affect is the daylight savings button. This will automatically switch you to the opposing setting which is what you want at this time so that it moves the clock forward 1 hour.

It is unfortunate that Toyota didn't provide an option to automatically adjust to daylight savings, and since they already link the navigation to the multi purpose display up in the dash, it is also unfortunate that they didn't bother to link the clock. It is linked to other things such as navigation, audio and air conditioning, you would think this wouldn't have been hard to add. It is unlikely, although possible, that the clock is a unique panel behind the multi-info display.