Dynamic Headlamp Aim
08-21-01, 07:10 AM
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Join Date: Aug 2001
Location: Kentucky
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Thanks for the explanation about dynamic leveling. Are these H.I.D. lights aimable like conventional headlights? I would like to check mine on a flat surface. Do you know the desired center of beam height and at what distance?
Thanks!
Thanks!
Originally posted by DevildogIS300
Let's see if I can explain this in under a 1000 words...
First off, the car does not know when it is level or not. Not as we know it, no mystery bubble gauge in the car that the ecu uses. The bubble gauges you see are just to set the initial level. The headlights need to set to a level position when the car is made. This is the starting reference point. From that point the HID ECU will then raise and lower the headlights when needed. A mechanical level sensor is connected to both the front left and rear left lower control arms. When the front suspension dives on hard braking, it moves the sensor and the HID ECU raises the lights. When the rear of the car dives from hard acceleration the HID ECU lowers the lights. It is still possible to have the headlights not aimed right. Anyone who removes or replaces the headlamp must again reset the headlamp to a level point. If the headlamp was pointed down slightly, it would still adjust up and down, but would never be correct, because it thinks it's level.
Does that help?
DD
Let's see if I can explain this in under a 1000 words...
First off, the car does not know when it is level or not. Not as we know it, no mystery bubble gauge in the car that the ecu uses. The bubble gauges you see are just to set the initial level. The headlights need to set to a level position when the car is made. This is the starting reference point. From that point the HID ECU will then raise and lower the headlights when needed. A mechanical level sensor is connected to both the front left and rear left lower control arms. When the front suspension dives on hard braking, it moves the sensor and the HID ECU raises the lights. When the rear of the car dives from hard acceleration the HID ECU lowers the lights. It is still possible to have the headlights not aimed right. Anyone who removes or replaces the headlamp must again reset the headlamp to a level point. If the headlamp was pointed down slightly, it would still adjust up and down, but would never be correct, because it thinks it's level.
Does that help?
DD
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