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Self leveling headlights
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Self leveling headlights
I’ve removed the front unit but the headlights still go up and down when I turn on the lights,also as I understand it there’s a unit on the back,can anyone explain this?
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- bigwinn
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Self leveling headlights
Similar principle on the rear suspension
Look underneath past the diff you’ll see it
Look underneath past the diff you’ll see it
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- bigwinn
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Self leveling headlights
It will still get movement as the two armatures work in tandem
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- enuff_zed
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Self leveling headlights
In the UK it will prevent it failing the MOT.
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Self leveling headlights
- enuff_zed
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Self leveling headlights
I suspect the self levelling works by sensing the difference between front and rear.
With the front disconnected, the system will sense the rear depressing, assume that it pointing the lights up, and level accordingly.
The same principle would apply if only the front were connected.
What it cannot now do is allow for the whole car moving down.
If you were currently to load the car evenly so that it sank equally front and rear, only the rear sensor would register any movement and the car would wrongly assume that it is rear end low and lower the lights to compensate.
With the front disconnected, the system will sense the rear depressing, assume that it pointing the lights up, and level accordingly.
The same principle would apply if only the front were connected.
What it cannot now do is allow for the whole car moving down.
If you were currently to load the car evenly so that it sank equally front and rear, only the rear sensor would register any movement and the car would wrongly assume that it is rear end low and lower the lights to compensate.
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Self leveling headlights
Great explanation thank you,lt makes sense really.enuff_zed wrote: ↑Tue Nov 29, 2022 12:31 pm I suspect the self levelling works by sensing the difference between front and rear.
With the front disconnected, the system will sense the rear depressing, assume that it pointing the lights up, and level accordingly.
The same principle would apply if only the front were connected.
What it cannot now do is allow for the whole car moving down.
If you were currently to load the car evenly so that it sank equally front and rear, only the rear sensor would register any movement and the car would wrongly assume that it is rear end low and lower the lights to compensate.
The cars still on jack stands awaiting parts to finish the front end,will be interesting to see what difference new unit makes.
- enuff_zed
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Self leveling headlights
Cheeky question (ask me how I know), but was it the dropping of the front wishbone on full extension that broke the existing unit?Robster68 wrote: ↑Tue Nov 29, 2022 1:49 pmGreat explanation thank you,lt makes sense really.enuff_zed wrote: ↑Tue Nov 29, 2022 12:31 pm I suspect the self levelling works by sensing the difference between front and rear.
With the front disconnected, the system will sense the rear depressing, assume that it pointing the lights up, and level accordingly.
The same principle would apply if only the front were connected.
What it cannot now do is allow for the whole car moving down.
If you were currently to load the car evenly so that it sank equally front and rear, only the rear sensor would register any movement and the car would wrongly assume that it is rear end low and lower the lights to compensate.
The cars still on jack stands awaiting parts to finish the front end,will be interesting to see what difference new unit makes.
Be sure to jack the suspension up a little before you fit the new one.
The extra downward movement afforded by removing the strut unit is enough to break the levelling unit arm...................... or so I'm told, ahem.
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Self leveling headlights
Not cheeky at all mate,that unit had been on there since new I think ,it didn’t stand a chance,basically the screw to the wishbone was welded on near enough,galvanic corrosion I think you call it.enuff_zed wrote: ↑Tue Nov 29, 2022 1:53 pmCheeky question (ask me how I know), but was it the dropping of the front wishbone on full extension that broke the existing unit?Robster68 wrote: ↑Tue Nov 29, 2022 1:49 pmGreat explanation thank you,lt makes sense really.enuff_zed wrote: ↑Tue Nov 29, 2022 12:31 pm I suspect the self levelling works by sensing the difference between front and rear.
With the front disconnected, the system will sense the rear depressing, assume that it pointing the lights up, and level accordingly.
The same principle would apply if only the front were connected.
What it cannot now do is allow for the whole car moving down.
If you were currently to load the car evenly so that it sank equally front and rear, only the rear sensor would register any movement and the car would wrongly assume that it is rear end low and lower the lights to compensate.
The cars still on jack stands awaiting parts to finish the front end,will be interesting to see what difference new unit makes.
Be sure to jack the suspension up a little before you fit the new one.
The extra downward movement afforded by removing the strut unit is enough to break the levelling unit arm...................... or so I'm told, ahem.
- smorris_12
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Self leveling headlights
These look like the same sensors they used on the Disco II for the self leveling suspension. When they died the suspension would simply end up at one end of its travel or the other so I don't think there's any idea of implausible values in their design for the control circuit to make use of.
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Scott
Where are we going and why am I in this handbasket?
2006 Z4 2.5si Silbergrau und rot
Scott
Where are we going and why am I in this handbasket?
2006 Z4 2.5si Silbergrau und rot
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Self leveling headlights
The front sensor is replaced so thought I’d have a crack at the rear sensor,god knows how this worked plastic arm bushes totally seized deforming plastic arm.I managed to removed it without breaking the sensor arm this time,took everything apart on the bench freed the bushes,now to clean and paint all metal brackets and hopefully I can save the deformed plastic arm leaving it in a vice for a few days.
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- grannyknot
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Self leveling headlights
It looks like you can still buy that push rod if your repair doesn't work out.
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2008 E86 M coupe
Toronto, Ontario
Toronto, Ontario
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Self leveling headlights
Wow that’s surprisingly cheap,I’ll pick a new one up on my travels.