Daytime running lights

Discussion in 'Generation 1 Prius Discussion' started by MArcin91t, May 3, 2026 at 1:27 PM.

  1. MArcin91t

    MArcin91t New Member

    Joined:
    Feb 27, 2026
    11
    3
    0
    Location:
    Poland, Poznań
    Vehicle:
    2000 Prius
    Model:
    I
    Today I decided to install a daytime running lights module that activates the high beam headlights at about 30-40% power. Unfortunately, in my country, there's a law requiring the use of headlights (low beam or daytime running lights) even during the day, which is annoying in the case of the Gen1 because it significantly dims the speedometer. I can brighten it with the button under the LCD display (where the US versions have the mph to kph button), but it still doesn't fully brighten the speedometer as when the headlights are off. Never mind.
    While trying to connect the DRL module, I discovered traces in the wiring diagrams and in the fuse box under the hood on the driver's side that suggest this model might have factory DRLs. Take a look at the photo.
    Point 1 shows the relay socket. According to the diagram, the version with DRLs should have a jumper.
    Point 2 has a jumper or some kind of pin protection. According to the diagram, the DRL should have a 30A fuse. There's a jumper in point 3, but there should be a dimming relay (does anyone know the part number?)
    I'm missing two fuses in point 4.
    I've circled the low beam fuses in blue because I had a question, but I already found the answer myself, so don't mind.

    And now the main question: Is there a chance that after filling in the missing parts in the box, I'll be able to activate the factory daytime running lights? If so, I won't bother with any additional DRL modules. Or maybe something else is missing. IMG_20260503_122920.jpg Screenshot_2026-05-03-12-26-52-869_cn.wps.moffice_eng.jpg
     

    Attached Files:

  2. MArcin91t

    MArcin91t New Member

    Joined:
    Feb 27, 2026
    11
    3
    0
    Location:
    Poland, Poznań
    Vehicle:
    2000 Prius
    Model:
    I
    I got excited too quickly.

    I've been poring over the diagrams and I already know it won't work (if anyone wants to see for themselves, it's in the first post in the PDF file from page 80 upwards). Even my DRL module won't work either. It turns out that the beams in both versions are completely different. So much so that the version with DRL has a bulb with a constant ground (the dimmer is on the ground side), and the high and low beams are switched by 12V. The version without DRL, on the other hand, has a constant 12V on the bulbs, and the high and low beams are switched by ground, which completely disqualifies my DRL module, which requires a constant ground.
    So I'm stuck with a crappy LED DRL in the bumper.