M-Class (W166) Produced 2012-2015

High Beams & Low Beams Bi-Xenon Mechanism Specifics

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Old Apr 30, 2012 | 01:28 PM
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300DTurbo's Avatar
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300D Turbo 1984
High Beams & Low Beams Bi-Xenon Mechanism Specifics

I took a long road trip from West Tx to San Antonio 9 PM-2AM trip, this is what I noticed with the high beams. (Bi-Xenon)

When driving with the setting on Auto and the Adaptive high beams: The high beams clycle about every 30-60 seconds depending on oncoming traffic.

IF* the sytem uses a fluctuation in VOLTAGE/AMPERAGE to increase the power, it will decrease the longevity for the bulbs.

IF* there is a shutter and the bulbs are burning at the same intensity, with the shutter fluctuating to change the projection of the beam I don't mind. This seems like a better system.

Please comment on this if you know specifics and details.

Thanks!
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Old Apr 30, 2012 | 06:57 PM
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2013 ML BLUETEC JULY 31
The arc of the bulb is the same. Remember HID has no wire filement but an arc of electricity in a gas filled bulb. The light reflector moves up and down and side to side. :-)
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Old Apr 30, 2012 | 07:24 PM
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300D Turbo 1984
Originally Posted by dougiebear
The arc of the bulb is the same. Remember HID has no wire filement but an arc of electricity in a gas filled bulb. The light reflector moves up and down and side to side. :-)
so just so I have this right. there is absolutely no change in the intensity of the arc whether I have low or high beams on. merely a change in the "reflector"/"shutter"
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Old Apr 30, 2012 | 08:46 PM
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2004 Volvo XC70; 2012 GLK 350 4matic
Correct. Easily verified parked in a garage. The Bi in Bi-Xenon is high and low beam from one bulb and variable optics/projectors.

Wayne
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Old May 1, 2012 | 09:53 AM
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Good information. Thank you!
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