Clubjazz - Honda Jazz & HR-V Forums
Honda Jazz Forums => Honda Jazz Mk3 2015 - 2020 => Topic started by: andruec on March 26, 2017, 08:13:02 AM
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Due to someone at Honda or Pioneer being a bit crap at programming we have to manually change our clocks to BST. Note that you should not actually change the time. Instead you want:
\Home\Settings\System\Daylight Savings = On
You'll have to scroll past the clock and time zone settings to get to 'Daylight Savings' (more poor design).
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Thanks!
I can't check now but I thought from the last thread about this, that even with that setting on, the clock did not get changed, and that it was therefore necessary to change the actual time.
Could be remembering wrong.
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I can't check now but I thought from the last thread about this, that even with that setting on, the clock did not get changed, and that it was therefore necessary to change the actual time.
Could be remembering wrong.
It may be version specific but I'm still on RC4 and setting Daylight Savings to On corrected the time.
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I can't check now but I thought from the last thread about this, that even with that setting on, the clock did not get changed, and that it was therefore necessary to change the actual time.
Could be remembering wrong.
It may be version specific but I'm still on RC4 and setting Daylight Savings to On corrected the time.
I have remembered how it works (I think)...... you are right....changing the setting advances the clock without needing to change the actual clock setting. The previous thread I was remembering was being surprised that it did not automatically change like most other devices.
I am away from my car until Tuesday. It will be interesting to see what it has done. As far as I am aware it gets the time from my phone when they are connected (i.e. whenever I am in the car with phone), so why wouldn't it change to the time my phone says on Tuesday (i.e. BST)?
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You can also access the daylight saving setting via [Home] >Settings > info > Daylight saving.
Turning this on will toggle the 1 hr forward and off for the 1hr back in autumn.
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I actually think that manually changing the hour is the right thing to do. The daylight saving day is not always the same from country to country. Just imagine the moans if it changed on the wrong day.
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DAB radio stations transmit a time signal, if my bedside alarm clock radio gadget can sort itself out so should my car. Previous cars I have owned have auto updated their time without DAB receivers.
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I actually think that manually changing the hour is the right thing to do. The daylight saving day is not always the same from country to country. Just imagine the moans if it changed on the wrong day.
You're misunderstanding what the option does. The daylight savings option on the infotainment centre is a manual function. It doesn't activate a rule set. By switching on DST we're telling the infotainment that right now is DST. If switched on in December the infotainment would show BST times during winter. Different people in different countries just activate the option on different dates.
In any case computers handle DST switching all the time. In point of fact they don't change the clock (all computer clocks run to UTC) but rather they apply a 'correction' when interacting with the user. As long as a computer knows the current locale (time zone) and the date it can handle DST just fine. Unfortunately there is no way to tell the infotainment unit the date so were stuck with having to tell it when DST is active. There's a whole load of logic in there to handle this and it's going unused. It's cheap and naff.
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Well despite all advice on here last Autumn I was unsuccessful at 'fixing' the time. I had to leave to garage for service in November and it was magically correct on return.
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Am I understanding this correctly - the infotainment unit does not show the date anywhere? Surely it's not going back to 1 Jan 1970 each time it's switched on, this would upset many 3rd party apps (if allowed).
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TG
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On the alternative display that I have chosen, the "Info" screen shows the time and date digitally. I usually select the analogue clock and the date continues to be shown digitally beside the clock-face.
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On the alternative display that I have chosen, the "Info" screen shows the time and date digitally. I usually select the analogue clock and the date continues to be shown digitally beside the clock-face.
Now you've got me intrigued. Where do we set the date?
I'm going to out to car to check again. 'cos if it knows the date and it knows the timezone then this is just *censored* crap programming.
Edit: Well I still can't find anywhere to set it but I note that the Android system is set to update date/time 'automatically from the network' and seems to be spot on. Given how generally rubbish most clocks are these days I'm now wondering where it's getting that from. I have wifi turned off but it does connect to my phone when I'm driving. I wonder if there's two clocks - the Android one and the infotainment one?
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If there are two clocks which one supplies time to the multi function display?
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If there are two clocks which one supplies time to the multi function display?
Good question. The whole thing seems weird and two clocks seems an odd way of doing things so that's probably a silly idea.
The Android system appears to be automatically updating its time from 'the network'. I double checked and it's spot on with my watch (radio controlled) and my phone. That's either one helluva coincidence or it really is syncing with the phone when it connects over Bluetooth. Or else it enables its own wifi now and again and gets its time that way (plausible but seems unlikely). DAB might be another source except that I've never used DAB on mine so don't know if it has any channels configured.
But we can manually adjust the time in the infotainment unit. I wonder what would happen if I adjusted it wrongly. I might try that test. Would it auto correct?
But after all this the question remains: If the Android system is updating its time automatically and since it knows the date and time zone..how come we have to faff about with DST?
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An observation from my HR-V which (mis)behaves in a similar fashion to the Mk 3 Jazz.
I think, if the touchscreen system is paired with a phone via Bluetooth then it can grab the time / date from (or through) the phone. However, I found that my HR-V didn't change to DST automatically but, when I went into the settings, DST was off. So I enabled DST and then the displayed time was correct. I can't remember for sure what happened last October as I had only just got the vehicle. However, the HR-V was serviced only 10 days ago which was meant to include any software updates (the auto stop is now working enthusiastically) and an update might have reset DST to off.
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Don't forget it's a car, not a tablet, phone or watch with wheels. How good a car would it be if timex or swatch made a car?
Oh wait.....
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I don't know If the HRV uses the same system as the Jazz but as andruec says above the DST on / off is only a switch that moves the set time forward an hour when on and back when off.
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I don't know If the HRV uses the same system as the Jazz but as andruec says above the DST on / off is only a switch that moves the set time forward an hour when on and back when off.
The systems in the two vehicles are very similar, if not the same. My HR-V was an hour wrong until turned DST on. I have never needed to adjust the minutes which suggests that the device is getting the time from somewhere but, as already noted, that time will be UTC.
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Edit: John beat me to it :)
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I am not a mobile phone user, so my Jazz is not getting the time adjusted that way. I have occasionally tried to use WiFi when parked outside the front door, and it has connected, though I've never been able to use it for anything. I think the clock is instructed by the digital radio signal, like a domestic PVR or TV. My Mk 2 jazz did not have DAB radio, and I had to correct the clock manually from time to time.
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DAB would make sense in that it's always available. Even if the user hasn't actually set it up that doesn't stop it tuning to a channel itself. The only problem with that theory is that I have a DAB clock radio so I know that the accuracy is rubbish. It rarely agrees with my radio controlled watch, yet my car does.
A year or so ago when I got the clock radio I did some research and found that DAB (at least in the UK) has an accuracy specified as +/- two (or possibly three) minutes. Certainly my clock isn't just always out by a bit. It varies from day to day, sometimes it's slow, sometimes it's fast. Usually by just a minute but sometimes by two.
But thinking about it I've never actually used the radio function so that's another confirmation that just being 'DAB capable' can be enough to allow a device to get the time.
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My Mk 2 jazz did not have DAB radio, and I had to correct the clock manually from time to time.
Which is what I have to do and it is hardly rocket science and it works unlike the 'modern' Jazz infotainment system which apparently doesn't!
Vic.
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And (most/all?) VHF radio stations transmit the time as part of the RDS system and all the car radios I've had over the years have set themselves from that.
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Wh :(ich is what I have to do and it is hardly rocket science and it works unlike the 'modern' Jazz infotainment system which apparently doesn't!
if you can find the correct buttons. From what I remember of the Mk2 they are printed in dark grey on a light grey background :-/
But computers are supposed to make life easier and it annoys me some'at rotten that with the all information it has the Infotainment unit can't save us the bother.
Technology is wonderful..if it's well designed and well implemented. The trouble is it so rarely is these days
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It's not a easy as it sounds to automatically change the clock at the right time anywhere in the world.
Computers don't actually know the time. They just know the number of seconds that have passed since 1st January 1980. They then use and algorithm to convert the seconds into a date and time. As the daylight saving is different for different countries the algorithm has to know where you are in the world and what time zone you are in.
About 20 years ago I wrote an algorithm to change the clock in a PLC. Something like on the first Sunday of March after the 23rd at 1 am add an hour. That works okay. But on the first Sunday in October after the 23rd at 1am you put the clock back. Then an hour later it's 1 am again so you have to remember that you have done it already this year so not to do it again, and again, and again....
Now if you set the clock from a phone, or the internet you need extra hardware to have an internet connection. It's much easier and cheaper to let the drive adjust the time twice a year. Are we really that lazy. A lot of us still choose to change gear ourselves.
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It's not a easy as it sounds to automatically change the clock at the right time anywhere in the world.
That depends what you mean.
The fact that computers usually store the time/date as the number of <somethings> elapsed since a given moment in time (for Windows it's the number of 300ns elapsed since Midnight 1st January 1601) is largely irrelevant. The algorithms needed to generate human comprehensible dates are built in. For the person that had to write them it might have required a little thought but they were written as part of the OS initial development phase (maybe by you) and never visited ever again.
If you know a time, a time zone and a date Android, Windows and any other modern OS can tell you the time in that zone with a trivial amount of programming. I work in C# and if I want to know the current time in EST it's as simple as:
var easternTime = TimeZoneInfo.ConvertTimeBySystemTimeZoneId(
DateTime.UtcNow, "Eastern Standard Time");
There may well be some maths going on under the cover but that matters nothing to me. To me as a software developer it's a trivial method call.
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Here we go again, that time of year to worry about getting clocks changed to 'winter time'. Despite all advice on here I was unable to sort problem myself previously. Today I was getting a main service done for car which is shortly to be two years on the road. This time the mechanic insisted on giving me a demo on doing it for myself.
The key problem was noone had told me to SWIPE the screen from left to right.
So from the home screen, SWIPE
This brings up a 'settings' option.
Select settings and then 'system',
Scroll down the system options in dropdown screen and select 'reset'
Ignore other options pertaining to clock and select 'daytime saving'
Now confirm with the OK on bottom of screen and job done ;)
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/me goes off into the corner to have another rant about the infotainment unit.
>:(
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Point of order --- No such thing as winter time, we are just back to GMT ( Greenwich mean time).
BST (British summer time) is GMT+1 hour, designed to make the most of daylight in summer and boost profits of food, drink and leisure industries.
Time is much easier to change on cars without screens.
I leave the clock on my motorbike on BST all year round, don't ride it much in winter and can easily take an hour off the time.
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I usually forget the clock in the car, but while sitting waiting on Mrs Jocko this morning I decided to preempt the change, so that is me ready for Sunday.
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I've been experiencing issues with the Navigation system, which seem somehow related to the DST settings.
It would sometimes happen that, for no apparent reason, regardless of the settings and time of year (i.e. whether we're in DST on not), the expected time of arrival shown by the Navigation system would be one hour later than expected.
After fiddling with it (like taking a detour so that a new route must be computed), or after a certain time, it normally fixes itself.
Anyone ever experienced something like that?
Thanks!
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How are you changing to/from DST? If you are doing it just by setting the clock forward/back that is the wrong way to do it and might be the cause of the problem. There is a specific setting in the infotainment unit to enable/disable daylight savings. Possibly the navigation software knows where it is and is unhappy about your choice of clock settings. Assuming you are based in the UK your infotainment unit should have the following settings:
Time : <Whatever your watch says when you check>
Time zone: GMT/WET
Daylight Savings: Disabled.
During the period when BST is in effect just enable the Daylight Savings do not change the time.