How can I mod the DRL to have it on at all time? (for 2013 models)

Discussion in 'Gen 3 Prius Accessories and Modifications' started by m3rhkp, Apr 26, 2013.

  1. se-riously

    se-riously Active Member

    Joined:
    Nov 25, 2010
    263
    114
    0
    Location:
    SF Bay Area
    Vehicle:
    2014 Prius Plug-in
    Model:
    Plug-in Base
    I had to undo this mod. When the car was charging, the DRL's would turn on at the same time and wouldn't turn off unless I unplugged the car. This issue appears to be limited to the plug-in only. Any suggestions on other fuses to tap instead?
     
    Tracksyde likes this.
  2. xliderider

    xliderider Senior Member

    Joined:
    Apr 19, 2012
    6,893
    2,557
    0
    Location:
    Honolulu, HI
    Vehicle:
    2011 Prius
    Model:
    Three
    You would need a fuse that is powered only when Ready. Maybe if you can find the fuse for the inverter coolant pump, or wiper motor and tap that.
     
    Wilfredo likes this.
  3. Nobody123

    Nobody123 Member

    Joined:
    Apr 14, 2015
    160
    33
    0
    Location:
    United States
    Vehicle:
    2015 Prius Plug-in
    Model:
    Plug-in Base
    I have a PiP. I was planning on rerouting the wires supplying power to the DRL to a relay to use as a negative trigger to another relay that provides power to the DRL.

    Then I can add a switch as another negative trigger to trip the new DRL relay.

    I think this is the most non-invasive way possible, but would there be any issue if the OEM DRL circuit sees that there is low current being pulled by the DRLs?

    I suppose I could just clip one of the DRL wires and see if misbehaves in any way.
     
  4. Toppcat

    Toppcat Member

    Joined:
    Jun 6, 2015
    223
    68
    0
    Location:
    Northern California
    Vehicle:
    2015 Prius
    Model:
    Five
    Agree any modifications with break your contract warranty between your car and Toyota! Wait till your wananty expires first and have some know and fully understand How to do it!
     
  5. Mendel Leisk

    Mendel Leisk Sand Pounder

    Joined:
    Oct 17, 2010
    44,632
    31,955
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    Part of the low demand might be the performance of the stock fog lights. Have them, never use them, apart from flipping them on/off once in a long while, to verify they're actually turning on. That's not a trivial task.
     
  6. Phx_Prius

    Phx_Prius Junior Member

    Joined:
    Mar 27, 2015
    11
    4
    0
    Location:
    Phoenix
    Vehicle:
    2013 Prius
    Model:
    N/A
    Thanks for this!
    Finally got around to doing it.
    Much better!
     
    Burna J likes this.
  7. bigmodernmess

    bigmodernmess New Member

    Joined:
    Feb 3, 2015
    8
    11
    0
    Vehicle:
    2012 Prius
    Model:
    Two
    I had a 2008 4Runner where I rigged the fog lights to stay on with parking and high beams. Except, instead of removing the fog relay, I bent a pin and jumped the pin, leaving the other functions intact. Could we do something similar here?
     
  8. Mabagal

    Mabagal Junior Member

    Joined:
    Sep 6, 2015
    6
    13
    0
    Location:
    Hayward,ca
    Vehicle:
    2015 Prius
    Model:
    Persona
    Hello. Just bought a prius couple days ago. Noticed that the DRLs turn off when headlights are on, thankfully found this forum and this thread.

    Where can I buy the same wire you used?

    When inserting the other end of wire to red fuse 10amp, how did you do it? Did you just wrap the wire to the pins of fuse?

    Sorry newbie here and not used to these electronic thing.

    Thank you
     
  9. Toppcat

    Toppcat Member

    Joined:
    Jun 6, 2015
    223
    68
    0
    Location:
    Northern California
    Vehicle:
    2015 Prius
    Model:
    Five
    I am planning to wire my drl once the warranty expires, but using rectifilers, relays and resistance coils when headlights come on 6-8 v to the drl and back to 12 V stock when low beam is off!
     
  10. E46Prius

    E46Prius Active Member

    Joined:
    Aug 3, 2015
    314
    214
    0
    Location:
    Costa Mesa
    Vehicle:
    2015 Prius
    Model:
    Three
    I'm sure someone addressed this already but the DRLs at night would be way too bright creating lots of glare and stray light. This is dangerous. Find a way to have 12V from the headlights trigger a relay which then has a resistor in line that reduces power (maybe restricts to 25% brightness)

    Sorry if this has been recommended already.

    also BTW.. not sure what all this concern about the warranty is. If you modify something, you void the warranty for that particular part. not the entire car, hybrid system, etc. So you void the warranty on some 10 cent fuses and dollar-store 22 gauge wire. Who cares? Mod away. (assuming your mods are good and safe) =)
     
    sfv41901 likes this.
  11. bongsta213

    bongsta213 Junior Member

    Joined:
    Sep 3, 2015
    29
    15
    0
    Location:
    santa barbara
    Vehicle:
    2015 Prius
    Model:
    Two
    can you show picture of the cable and how it was installed?
     
  12. xliderider

    xliderider Senior Member

    Joined:
    Apr 19, 2012
    6,893
    2,557
    0
    Location:
    Honolulu, HI
    Vehicle:
    2011 Prius
    Model:
    Three
    Original instructions here: How can I mod the DRL to have it on at all time? (for 2013 models) | Page 3 | PriusChat

    Use a low profile mini ATM fuse tap like this: [​IMG] with two 10 amp fuses in it to tap the 10 amp circuit shown in the above instructions.

    Connect the wire coming out of the fuse tap to a quarter inch male spade terminal like this http://pages.ebay.com/link/?nav=item.view&id=301750507122&alt=web you may need to extend this wire using some 14 awg wire.

    Then plug the male spade into the correct location from the removed DRL relay in the instructions above.
     
  13. bongsta213

    bongsta213 Junior Member

    Joined:
    Sep 3, 2015
    29
    15
    0
    Location:
    santa barbara
    Vehicle:
    2015 Prius
    Model:
    Two
    thanks!!!!!

    i dont understand why this would void warranty. when i spoke with the dealer they said as long as i dont touch engine/suspension, it shouldnt void my warranty. if this voids warranty, adding HID kit (with relay) should void warranty too, right?
     
  14. sfv41901

    sfv41901 Masta S

    Joined:
    May 5, 2010
    4,591
    5,281
    0
    Location:
    Palmdale, Ca
    Vehicle:
    2015 Prius
    Model:
    Four
    The only time anthing would void the warranty if if the modification cause the "failure" in question

    Example: BCM (Body Control Module) failure.....dealer would state cause was DRL mod

    Suspension failure.....dealer cannot state cause of DRL mod because it has nothing to do with suspension.

    Remember guys......The dealer has to prove that the failure is a direct result of a "mod"


    VS980 4G ?
     
    bongsta213 likes this.
  15. HelloPriPri

    HelloPriPri New Member

    Joined:
    Nov 13, 2015
    1
    0
    0
    Location:
    USA
    Vehicle:
    2013 Prius
    Model:
    Two
    I would like to keep all DRL on/off switching functionality (i.e. keep the DRL relay) but add the low beams on/off signal to the mix such that the low beams being on activate the DRLs. If the low beams are off, then the default DRL switching behavior would remain as stock. Does this make sense? Has anyone gone this route?

    Does anyone happen to know the voltage of the signal input to the DRL relay? Is this signal fused on the fuse panel such that I could use a fuse tap to achieve the desired functionality?

    Thank you!
     
    #115 HelloPriPri, Nov 13, 2015
    Last edited: Nov 13, 2015
  16. Gilbert

    Gilbert Member

    Joined:
    Dec 13, 2007
    255
    15
    0
    Location:
    California
    Vehicle:
    2012 Prius
    Model:
    Three
    Maybe someone can help me out here. I purchased one of the relays mentioned above but the blue part is circular so I can't stick it where the blue drl relay was. I even tried to squish it to make it fit but dlrs wouldn't turn on.
     

    Attached Files:

  17. xliderider

    xliderider Senior Member

    Joined:
    Apr 19, 2012
    6,893
    2,557
    0
    Location:
    Honolulu, HI
    Vehicle:
    2011 Prius
    Model:
    Three
    Gilbert, you have to cut that connector off and attach a 1/4 inch spade crimp on connector. Trying to force that female bullet connector into your DRL relay terminal socket will damage it, if you haven't already.

    There is a picture in this post that shows the female bullet connector replaced with a spade terminal (post #78): How can I mod the DRL to have it on at all time? (for 2013 models) | Page 4 | PriusChat

    TBH, if you don't know the difference between these basic connectors, then you shouldn't be messing with your car's electrical system.

    SCH-I535 ?
     
    #117 xliderider, Jan 4, 2016
    Last edited: Jan 4, 2016
    Wilfredo likes this.
  18. Gilbert

    Gilbert Member

    Joined:
    Dec 13, 2007
    255
    15
    0
    Location:
    California
    Vehicle:
    2012 Prius
    Model:
    Three
    Thanks, that's the part I didn't see before. makes much more sense now.
     
  19. Gilbert

    Gilbert Member

    Joined:
    Dec 13, 2007
    255
    15
    0
    Location:
    California
    Vehicle:
    2012 Prius
    Model:
    Three
    Finally got it working. Thanks for the help.
     

    Attached Files:

  20. Dreamerzcc

    Dreamerzcc Member

    Joined:
    Jul 16, 2016
    67
    82
    0
    Location:
    Hoover
    Vehicle:
    2013 Prius
    Model:
    Four
    Couldn’t find my add a fuse from my fog light mod on my Xterra so I went and bought another on last night. Took about 5 minutes to complete! IMG_0133.JPG IMG_0131.JPG IMG_0132.JPG


    iPad ?
     
    Grit likes this.
Loading...