Are LR4's actually bi-xenon?

Discussion in 'LR4' started by mklinker, Jun 17, 2019.

  1. mklinker

    mklinker Full Access Member

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    I just got done upgrading my 2012 LR4 to xenon headlights. I was reading the workshop manual, and it talked about how the xenon headlights were bi-xenon headlights. That implies that the xenon bulbs put out more light (some solenoid inside the bulb) when you switch to high beams.

    From the manual:
    NOTE: If the lighting control switch is in the OFF position, the xenon lamps do not operate when the high beam 'flash' function is operated. If the lighting switch is in the headlamps position or AUTO position with the low beam lamps active, the xenon low beam will remain on when the high beam 'flash' function is operated.

    Are the xenon headlights on an LR4 actually bi-xenon, or will the halogen high beams always come on when you turn on high beams?
     
  2. Schlepper

    Schlepper Active Member

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    For bi-xenon output is consistent. When you switch to high beams the reflector moves.
     
  3. mklinker

    mklinker Full Access Member

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    But then why do the halogen high beams also come on...
     
  4. ktm525

    ktm525 Full Access Member

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    The halogens provide a far reaching spot further out while the reflector in the xenons moves to focus the light further out than they do on low beam. I had a Volvo V70R with the same system except that in high beam there were no halogens (Volvo used them as DRLs in North America). The high beams were very weak with just the xenon operating.
     
  5. Schlepper

    Schlepper Active Member

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    Because 10-13 are just xenon. The facelift have bi-xenon.
     
  6. Quijote

    Quijote Full Access Member

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    I also had a V70R and can confirm that the Xenon high beams were super weak.
     
  7. ktm525

    ktm525 Full Access Member

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    Surprising that a "safety" company released a car with such weak headlights.
     
  8. hickersb

    hickersb Well-Known Member

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    In the 2014+, there is only a bi-Xenon lamp where the reflector moves (no halogen high-beam).

    I think I've seen several comment that the 2010-2013 lights are much better with both the Xenon and the halogen high beams operating at the same time.
     
  9. avslash

    avslash Full Access Member

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    I have actually always loved the lights in my 2012. It is probably the best of any vehicle I have had.

    Even better since I replaced the halogen high beam bulbs with LEDS.

    It's one area where I have no complaints with the Rover.
     
  10. Lgibson

    Lgibson Full Access Member

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    As a side note, xenon bulbs do not respond well to continual on/off cycling as in European style “flash to pass” use, hence the bi-xenon approach where the bulb is always on. Halogens, on the other hand, have no problem being “dipped” so are better suited to high beam use.
     

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