I've had the DST update enabled on my 2018 LS500 and it did not update over the past weekend. Small things such as that really frustrate the heck out of me. Anyone else experience the same or does anyone know why it may not have happened as its designed ? What am i missing ?

 

I've never seen any Lexus vehicle update for DST. You just need to turn it on or off depending on the time of year. GPS based time systems don't handle DST time changes. I have a Citizen satellite Wave watch that also has to have DST changed manually.

 

Every tool or system I have that had a DST option to be automatic worked for me. I've had times where an update of code or a stream to the internet broke prior to and did not get resolved until a day or so after the DST change occurred, but subsequently performed the update. I just think this should work.

 

My previous Lexus' were the same. If I'm not mistaken, my BMW was the same as well.

 

My 4th gen LS works the same way; you have to go into the menu twice a year to enable or disable it. Kind of makes sense; there's so many places that don't use DST that it would be hard for software to know whether to change the time twice a year.

 

Hey DerrickM - then I don't think it should be an option. If you end up manually changing a "computer programmed option" that should work based on GPS, NTS or whatever they use for this car, then it's plain and simple, it should work. I have thousands of servers that have the same mechanism, this type of update has been used on computers for more than 20 years, it reliable and works. Although, as with everything, some things "break", but this should be straight forward and work like a charm. So if your 4th gen is like that, shame on Lexus. If it's a bug, glitch or they are just pointing to the wrong source for this update they need to fix it. It's little things like this that strike me really the wrong way with a luxury vehicle. They should be focused on these little obscure details. If they are missing or letting something so simple like this fail, what else are they overlooking. Does not spell quality.

 

GPS satellites do not provide DST information. Any device that relies solely on a GPS signal will only get UTC time and then it's offset based on your timezone that you pick for your device.

 

Sounds like you're in I/T. Me too--I'm a computer programmer. DST is a political thing--it changes by location and over time by legislation. Automakers develop a lot of software these days, but they're not Microsoft. I agree with you that an automaker could make this work, but the added complexity would mean they'd be updating the software every time a country or country's province changed their rules about observing Daylight Savings Time.

For example; I live in Idaho, which is in the same time zone as Arizona; but half the year AZ time is an hour different from ID time. Since GPS doesn't take care of this, the car's software would have to know either that it's entered Arizona's boundary, or that the user selected that they live in Arizona. I don't think any automaker should be judged harshly for sidestepping an issue like that.

I do see your point that computer operating systems have been solving this problem for years, but I don't think it's exactly the same for a car that moves across time zones and relies on GPS. I wonder if other automakers do support this. I mean if Toyota was alone here I'd probably feel a lot differently.

 

I started up my car on 11/3 and the car automatically updated for DST.

 

Hi, I know for a fact that they are doing this very thing. They may not be MS, but their IT Dept around the world, especially their technology guru' working infotainment, are constantly updating this stuff, just as much as MS. If you want assurance that they do, just look at their forum consortium for infotainment systems with other manufactures. They are not just an auto company. These guys, as well as many other vehicle manufacturers are seriously into "mobility" as any tech company you will find. Why then is this system not behaving as its designed ? I'm lost to provide an answer. Take a look here where they are now using an AGL https://www.automotivelinux.org/community - look at their community and what they are doing, you'll see that they are just as much into technology and keeping systems up to date as any software OEM.

 

Did this and it updated. That's the monkey rule. If we can't make the software work, let get a human to do it. My mobile devices update without fail. These infotainment systems are now becoming "mobile software" and should do the same. Makes no sense.

 

I would expect it to do that flawlessly every year, twice a year. "scratching head"

 

Recall that Arizona has never used Daylight Savings Time. Also, the start and end
dates have been adjusted over the years. You expect a $60K car to perform this
simple task as well as your $35 clock radio? Yeah, me too.

 

I do. My 1K phone does. Not as difficult as it made out to be.

 

Yeah, after thinking about this some more; you're right. DST information can be gotten from NIST and other places, and there's no reason the car's software couldn't apply current time based on whether the DST setting is on or off. https://www.nist.gov/pml/time-and-fr...-stations/wwvb Just because GPS doesn't support DST, doesn't mean they couldn't get that information elsewhere. My 10 year old radio controlled alarm clock makes the change twice a year without fail.