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S60 & V60 '11-'18 / XC60 '09-'17 General Forum for the P3-platform 60-series models |
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Self levelling Xenon lights - Is it constantly active?Views : 1001 Replies : 11Users Viewing This Thread : |
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Dec 9th, 2020, 11:34 | #1 |
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Self levelling Xenon lights - Is it constantly active?
Hi all,
Self levelling lights on a MY16 V60. Does this just mean when the car starts it does a self calibration based on the current loading of the car? If so, would I be correct in saying it's not constantly active so if the load changed, really you should recalibrate the levelling by turning the car on/off unless you have the load compensation option fitted (Nivomat).
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Dec 9th, 2020, 12:25 | #2 | |
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Dec 9th, 2020, 16:31 | #3 |
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So the self levelling isn't what the headlamp units do when I first turn the car on as mine dip down then come back up, like they are self calibrating the vertical position point?
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Dec 9th, 2020, 22:03 | #4 |
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When you first start the car, the the headlamps move to the top and bottom as the system cannot remember where they were when the engine was turned off, so I would describe it as alignment rather than calibration.
The sensors on the suspension are used to set the level, this is not changed as you drive - i.e. the headlights down adjust up and down as you go over bumps, it just sets the right level for the load. Whether this is done only when you start the car or every time the car is stationary - I'm not sure.
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Dec 9th, 2020, 22:37 | #5 |
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I think the levelling works constantly. The sensor bracket got damaged on mine so the movement was exaggerated. The lights constantly moved up and down in response to the slightest bump in the road and in response to braking.
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Dec 9th, 2020, 22:47 | #6 |
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So when the car starts and the lights move up and down, is this indeed calibrating for top and bottom maximum values which then allows the bulbs to level together and the system knows the mid point of each from the range it's just calculated from the sweep?
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Dec 10th, 2020, 09:14 | #7 | |
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I suspect that due to the safety implications if it fails, it's just a check that the levelling mechanism is working throughout its range and will flag up an error if it finds a problem. Even though mine were blinding people and then dropping to light up about 2ft of road, there weren't actually any errors shown. The dealership had to ask Volvo for advice.
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Dec 10th, 2020, 10:08 | #8 | |
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Dec 10th, 2020, 11:56 | #9 | ||
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Dec 10th, 2020, 12:09 | #10 | |
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There's usually a good description of how the system works in VIDA so I'll have a look later.
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