DRL lights at tail.

Discussion in 'Prius v Technical Discussion' started by Sfpep, Oct 18, 2020.

Tags:
  1. Sfpep

    Sfpep New Member

    Joined:
    Oct 18, 2020
    16
    3
    0
    Location:
    Finland
    Vehicle:
    2016 Prius+ MPV
    Model:
    N/A
    Hi! I hope this is the right place to ask this. I have 2016 prius+ and i have come across only one negative thing in these past two years. When I have the lights on "auto" mode and daytime its running on the DRL lights and all tail lights are off. Is it programmable or do i have to search some relays to get the tail lights on also on daytime?

    Thanks..
     
  2. Air_Boss

    Air_Boss Senior Member

    Joined:
    Jun 2, 2012
    3,078
    746
    0
    Location:
    New Yawk
    Vehicle:
    2012 Prius v wagon
    Model:
    Five
    Just turn on your marker lights. But why?
     
    Minima Domum and fuzzy1 like this.
  3. fuzzy1

    fuzzy1 Senior Member

    Joined:
    Feb 26, 2009
    14,053
    7,587
    90
    Location:
    Western Washington
    Vehicle:
    2012 Prius
    Model:
    Three
    That is the definition of DRLs -- two front lamps only, no side or tail lights.
     
  4. David9962000

    David9962000 Member

    Joined:
    Aug 26, 2011
    93
    43
    0
    Location:
    California
    Vehicle:
    2020 Prius
    Model:
    LE
    I haven't seen that setting on Carista but using the headlight switch on the city light position on mine, turns on the DRL and the rear tail.
     
    Tyfly likes this.
  5. Sfpep

    Sfpep New Member

    Joined:
    Oct 18, 2020
    16
    3
    0
    Location:
    Finland
    Vehicle:
    2016 Prius+ MPV
    Model:
    N/A
    Yeah i know how they work... I was just wondering that is it possible to program tail lights to come on ALSO with the DRL lights on front. Here in Finland it is allowed to drive only on DRL but i feel more secure when there is also lights in the tail. And as lazy arse as i am i would like the car do it all for me. "Light switch in auto mode."
     
  6. Air_Boss

    Air_Boss Senior Member

    Joined:
    Jun 2, 2012
    3,078
    746
    0
    Location:
    New Yawk
    Vehicle:
    2012 Prius v wagon
    Model:
    Five
    If push came to shove you could physically wire the tails to the DRLs.
     
    Minima Domum likes this.
  7. Sfpep

    Sfpep New Member

    Joined:
    Oct 18, 2020
    16
    3
    0
    Location:
    Finland
    Vehicle:
    2016 Prius+ MPV
    Model:
    N/A
    yep... that is the last option. Thats why im here asking if someone have done it only programming.
     
  8. Prodigyplace

    Prodigyplace Senior Member

    Joined:
    Nov 1, 2016
    11,413
    10,994
    0
    Location:
    Central Virginia
    Vehicle:
    2017 Prius
    Model:
    Two
    At least for Gen 4 there is a specific Customizations section in the manual that lists all the settings and whether a dealer visit is needed to change it.
     
  9. Offline

    Offline Active Member

    Joined:
    Sep 3, 2012
    617
    213
    0
    Location:
    Lenexa, Kansas
    Vehicle:
    2012 Prius v wagon
    Model:
    Five
    Rear DRL is a new requirement in some countries, e.g. in Canada beginning September, 2021.

    Edit: I forgot to mention that some current model year vehicles already have rear DRL but that the feature is turned off.
     
  10. Sfpep

    Sfpep New Member

    Joined:
    Oct 18, 2020
    16
    3
    0
    Location:
    Finland
    Vehicle:
    2016 Prius+ MPV
    Model:
    N/A
    I truly hope that rear DRL is on its way to Finland too.
     
  11. Air_Boss

    Air_Boss Senior Member

    Joined:
    Jun 2, 2012
    3,078
    746
    0
    Location:
    New Yawk
    Vehicle:
    2012 Prius v wagon
    Model:
    Five
    A single rear red drivers side position light that illuminates when front fog lights are used has been a requirement in numerous European countries (Germany, notably) for decades.
     
  12. sam spade 2

    sam spade 2 Senior Member

    Joined:
    Mar 31, 2018
    4,115
    1,778
    0
    Location:
    USA
    Vehicle:
    2017 Prius c
    Model:
    Four
    You can NOT easily do that.
    And you really don't WANT to either.

    Following drivers are somewhat less likely to notice brake lights coming on in the day time IF the tail lights are already illuminated.
    It is designed the way it is for a good reason.
     
    Minima Domum likes this.
  13. sam spade 2

    sam spade 2 Senior Member

    Joined:
    Mar 31, 2018
    4,115
    1,778
    0
    Location:
    USA
    Vehicle:
    2017 Prius c
    Model:
    Four
    Reference please ?
    Seems like I remember that Canada does not "require" DRLs at all.

    And what models exactly are already equipped with that "feature" ??
     
  14. fuzzy1

    fuzzy1 Senior Member

    Joined:
    Feb 26, 2009
    14,053
    7,587
    90
    Location:
    Western Washington
    Vehicle:
    2012 Prius
    Model:
    Three
    Why don’t tail lights come on with daytime running lights? - The Globe and Mail

    "After three decades, Transport Canada finally saw the light. It was announced early last year that the rules around tail lights would change for new cars starting in 2021, ...
    Canada has required front daytime running lights (DRLs) on all vehicles sold since 1989, but it hasn’t required tail lights to come on with them."


    The new requirement actually has 3 options. Read for details. This appears geared more towards preventing "phantom cars", driving around at night with DRLs only, no taillights.

    That was fixed decades ago by the addition of CHMSL - center high mount stop light, a.k.a. "third brake light".
     
    Minima Domum likes this.
  15. sam spade 2

    sam spade 2 Senior Member

    Joined:
    Mar 31, 2018
    4,115
    1,778
    0
    Location:
    USA
    Vehicle:
    2017 Prius c
    Model:
    Four
    The problem was no doubt reduced some but that was NOT the initial reason for the 3rd brake light.

    A MUCH better solution would be to require automatic lights to go along with the required DRLs.
    That tends to solve ALL the perceived problems instead of trading one for another.

    Note: That's one of the few things that I HATE about my C.
    Automatic high beams but NOT automatic ON headlights.
    I have driven more than once at night with only the DRLs on.
     
    Tyfly likes this.
  16. fuzzy1

    fuzzy1 Senior Member

    Joined:
    Feb 26, 2009
    14,053
    7,587
    90
    Location:
    Western Washington
    Vehicle:
    2012 Prius
    Model:
    Three
    That would not be a reason to not accept the benefit.
    That is Option #2 in the article I linked above. The Canadian regulators chose to not force everyone into a single solution.
     
  17. sam spade 2

    sam spade 2 Senior Member

    Joined:
    Mar 31, 2018
    4,115
    1,778
    0
    Location:
    USA
    Vehicle:
    2017 Prius c
    Model:
    Four
    Sure.
    Allowing people to be as stupid as they want is a really important concept.
    :whistle:
     
  18. fuzzy1

    fuzzy1 Senior Member

    Joined:
    Feb 26, 2009
    14,053
    7,587
    90
    Location:
    Western Washington
    Vehicle:
    2012 Prius
    Model:
    Three
    By imposing a new regulation, they are not allowing people to continue being as stupid as they want. But they are allowing several different solution choices, rather than dictating a single design.
     
  19. tvpierce

    tvpierce Senior Member

    Joined:
    Apr 27, 2015
    839
    784
    2
    Location:
    Maine
    Vehicle:
    2013 Prius v wagon
    Model:
    Five
    Can't you just leave the lights in the "ON" position rather than the "AUTO" position? In doing so, wouldn't they then come on when the car was put into "READY", and turn off when the car is shut down?
     
    Minima Domum and Tyfly like this.
  20. sam spade 2

    sam spade 2 Senior Member

    Joined:
    Mar 31, 2018
    4,115
    1,778
    0
    Location:
    USA
    Vehicle:
    2017 Prius c
    Model:
    Four
    NO. ON is ON.
    They would not turn on and off with the "ignition".
     
    Offline likes this.
Loading...