1. Attachments are working again! Check out this thread for more details and to report any other bugs.

LED headlights for 2012 Prius C

Discussion in 'Prius c Technical Discussion' started by wongnog, Dec 28, 2019.

  1. wongnog

    wongnog Member

    Joined:
    Feb 14, 2012
    125
    26
    1
    Location:
    Toronto
    Vehicle:
    2012 Prius c
    Model:
    Technology
    I'm looking to replace my headlights with LED bulbs. I got this combo kit for H11 low beams and 9005 high beams:

    Amazon CA:
    Amazon US:


    When I asked the seller if these should work, they replied "...your vehicle's 9005 headlight bulb is shared with your DRL, as the working voltage of DRL is 6-9V, the headlight is 12V, the voltage is different, it is too powerful to light up in DRL model. It may be flickering or not turn on. So if you use 9005 headlights as your high beam, then it may be flickering or not turn on."

    Has anyone run into this issue? I've read about some people needing to add a resistor, but I'm not certain what that means/is?

    I also got these H16 bulbs for my fog lights, but that seems to be a more difficult install so I won't try them yet:

    Amazon CA:
    Amazon US:


    P.S. looks like you may need to turn off adblocker for the amazon links above to appear
     
  2. icspots

    icspots Junior Member

    Joined:
    Nov 8, 2013
    41
    22
    0
    Vehicle:
    2012 Prius c
    Model:
    Four
    Many DRL systems use pulsed power to produce the dimmer light during the daytime, then constant power for the actual high beam. LEDs don’t like pulsed power because they need constant minimum voltage to light up. What you’d likely need is a capacitor harness to plug inline with your lamps.... so the pulsed power would charge the capacitor, and the capacitor would power the lamps.

    When I bought my LED lamps from the retrofit source it gave an option of their anti-flicker harness when I added the lamps. I was just swapping the low beams so I didn’t worry about it. They sell their anti-flicker harnesses separate, $30/pair.
     
  3. rjdriver

    rjdriver Active Member

    Joined:
    Apr 7, 2012
    399
    166
    0
    Location:
    Rhode Island
    Vehicle:
    2012 Prius c
    Model:
    Three
    For the sake of those of us who are being blinded quite often these days even by OEM LED headlights, please make sure they installed and aimed correctly. .
     
    #3 rjdriver, Mar 2, 2020
    Last edited: Mar 2, 2020
    dubit likes this.
  4. Lee3740

    Lee3740 Junior Member

    Joined:
    Feb 23, 2020
    2
    0
    0
    Location:
    Pakistan
    Vehicle:
    2014 Aqua
    Model:
    N/A
  5. icspots

    icspots Junior Member

    Joined:
    Nov 8, 2013
    41
    22
    0
    Vehicle:
    2012 Prius c
    Model:
    Four
    Honestly that’s true across the board regardless of what’s making the light.
     
  6. dig4dirt

    dig4dirt MoonGlow

    Joined:
    Apr 6, 2012
    1,150
    740
    0
    Location:
    Lancaster Co PA
    Vehicle:
    2014 Prius c
    Model:
    Two
    I will say sitting in a "c" ....now it seems like everything will blind, but
    for sure all those newer SUV get me all the time.

    Used to only be the old school jeeps and some pickups.
     
  7. sam spade 2

    sam spade 2 Senior Member

    Joined:
    Mar 31, 2018
    7,035
    2,775
    0
    Location:
    USA
    Vehicle:
    2017 Prius c
    Model:
    Four
    I think these comments are falling on deaf ears but .........................

    All but the most expensive replacement LED headlights often do not produce the right dispersal pattern and may not even produce as much raw illumination as stock.

    Unless you replace the entire headlight assembly, you can't be sure of a good result.
    And even then they might not actually produce more light.

    Newer isn't always better.

    So IF you drive a lot in rural areas where there is little traffic at night, a set of aux. driving lights would be much easier and likely much better, without sacrificing the stock headlights for urban use.
     
  8. Jay Chu

    Jay Chu New Member

    Joined:
    Mar 25, 2020
    7
    0
    0
    Location:
    Australia
    Vehicle:
    2014 Prius c
    Model:
    i-Tech
    Thinking of doing this project as well
     
  9. icspots

    icspots Junior Member

    Joined:
    Nov 8, 2013
    41
    22
    0
    Vehicle:
    2012 Prius c
    Model:
    Four
    It’s good to bring up, and true of many headlight kits which swap from a halogen lamp. We swapped out to the LED low beams not for brighter, or whiter, improved beam, etc. We swapped because it’s my wife’s commuter car (100 miles/day) and we’ve had a low beam lamp blow every 1-2 months for the last year. These were just standard H11 halogens, no “fancy” upped wattage lamps that burn themselves to death.

    The beam pattern and light output are similar to halogens, if a bit whiter.

    If I wanted brighter lights or a better beam pattern I’d be swapping out the projector for something much improved. Not planning on dropping that money into this car though.
     
  10. sam spade 2

    sam spade 2 Senior Member

    Joined:
    Mar 31, 2018
    7,035
    2,775
    0
    Location:
    USA
    Vehicle:
    2017 Prius c
    Model:
    Four
    This is odd. Because my family is on our 4th C now over about 6 years and have never had a single bulb go out.
    Does the car get driven at night much ? Because the DRL function uses the high beams at reduced power, I believe.

    You might want to have the charging voltage for the 12 V battery checked.
    It might be a bit too high.
     
  11. icspots

    icspots Junior Member

    Joined:
    Nov 8, 2013
    41
    22
    0
    Vehicle:
    2012 Prius c
    Model:
    Four
    No doubt it’s odd. Battery checked out fine, alternator not overcharging. I’ve never had an issue with headlights like this on any other car. DRL is used daily, and yes it uses the high beam lamps with a pulsed power feed. During the winter the car was almost only driven in the dark because her commute was all before sunrise and after sunset. During the summer it almost always driven during the day.
     
  12. Sonic_TH

    Sonic_TH Member

    Joined:
    Mar 18, 2020
    492
    78
    7
    Location:
    Puerto Rico
    Vehicle:
    2012 Prius c
    Model:
    One
    The Prius C seems to burn the H11 ''low beams'' halogen light bulbs a lot.
     
  13. abubin

    abubin Member

    Joined:
    Dec 7, 2019
    179
    89
    0
    Location:
    Malaysia
    Vehicle:
    2012 Prius
    Model:
    N/A
    I have done changing all my front lights to LEDs. Headlight H11, highbeam 9005, foglight h11 and front side marker t10. Rear all are leds too. Except for the signal light as that will get hyper flash. So far, loving it and I made sure it's not blinding to the oncoming traffic.
     
  14. hybird

    hybird New Member

    Joined:
    Feb 7, 2024
    1
    0
    0
    Location:
    USA
    Vehicle:
    2012 Prius
    Model:
    Five
    Where did you get your lights? I'd love to make all of these conversions as well.
     
  15. BiomedO1

    BiomedO1 Senior Member

    Joined:
    Mar 27, 2021
    1,213
    662
    0
    Location:
    SacTown, Ca
    Vehicle:
    2021 Prius Prime
    Model:
    LE
    Ebay or amazon. the DRL will flicker, unless you install an anti-flicker harness. I didn't see the point, since the DRL is supposed to get you noticed. Had them in the car for 5 years, no issues - until an uninsured motorist totaled it out.
    PS. you need to watch the polarity on LED's; incandescence lamps don't care which wire is positive or negative, but LED's do. If your replacing your fog lamp bulbs; get the 3000K bulbs - they're yellow, a great contrast in the fog, rather than the blinding full white light spectrum.

    Good luck....