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06 XC70 Headlight level motor Topic is solved

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scot850
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06 XC70 Headlight level motor

Post by scot850 » Thu May 17, 2018 12:54 pm

Ok, got this annoying buzzing noise near the LH headlight. Thought ti was the vacuum pump failing again on the brake booster but disconnecting the switch made no difference. As I don't drive the car, I didn't realise that the car has automatic headlight level adjustment. It seems the LH motor runs continuously once the ignition is switched on. For now I have disconnected it as clearly it is not doing it's job and is just plain annoying.

Now there are 2 types of headlights, the gas discharge version we have for which the motor is replaceable and the other version (HID?) which has a more complex motor that moves left-right and up-down for which you have to replace the whole headlight.

Question is without pulling the headlight I don't know how the system works. Is it a gear/cog arrangement?

Then the issue is is it the motor part that fails (maybe an internal limit switch fails, as the motor clearly runs) or does it have a cog wheel on the end of the shaft that breaks or is there a corresponding cog wheel in the headlight that breaks?

Anyone have any experience on this? To buy a motor is about $150 CDN from the dealer, so don't want to order one until I know what is broken and really don't want to pull the headlight if possible, but may be the only option.

Thanks,

Neil.


2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold

SuperHerman
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Re: 06 XC70 Headlight level motor

Post by SuperHerman » Sat May 19, 2018 12:21 am

I pulled the motor replacement procedure up in VIDA. It is not too complicated. It is basically pull off protector, disconnect harness, turn motor downwards 1/4 turn towards headlight housing (the white point must be against the housing).

Here are quotes from this point forward:

"Work the motor out of headlight housing. The motor must remain in the reflector"

(it appears you don't yank it out - just pull it out a minimal amount unclear instructions so you will have to see what happens when you are in it - just don't force anything. I have never done it).

"Pull the lamp back towards the opening. The reflector will follow it slightly." "Angle the motor down while pulling it upwards so that it releases from the reflector." (motor is now free and in your hand)

Now looking at the pictures it appears the motor has a plastic style drive shaft. If you can spin this by hand (looking for force like if the internal gear was broken or the plastic shaft to motor/gear is stripped) then I would assume you can just buy a replacement motor. If you cannot then I would assume something internal inside the light is the issue. You should be able to find a screw driver, allen key or similar with a dimension like the size of the motor's plastic drive shaft and insert it into the female end located in the headlight and see how it spins.

Assuming the motor is in fact bad, and as the motor is out and you are not using it and you are most likely going to buy a new one - you may as well try and open it up to see if you can flip a gear or turn it 180 degrees and fix the motor. Maybe some epoxy putty could be used if the plastic drive shaft to motor/gear is spinning on the shaft.

Post some pictures as I am curious.



SuperHerman
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Re: 06 XC70 Headlight level motor

Post by SuperHerman » Tue May 29, 2018 10:44 pm

Any update on this? Pictures?



scot850
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Re: 06 XC70 Headlight level motor

Post by scot850 » Tue May 29, 2018 11:02 pm

Nope, not yet. I hope to try to get to it next week when I strip the front suspension out for re-build. I plan to remove the bumper again then and check the headlight out.

Neil.


2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold

scot850
Posts: 5022
Joined: Mon Apr 05, 2010 2:46 pm
Year and Model: 2000 V70 R
Location: Calgary, Alberta, Canada
Has thanked: 4 times
Been thanked: 73 times
Canada

Re: 06 XC70 Headlight level motor  Topic is solved

Post by scot850 » Tue Jun 12, 2018 12:14 pm

Well, not the answer I expected, but got to the bottom of this issue I believe. Turns out it was neither the headlight sensor or the headlight itself.

I took the car into the dealer for a suspension alignment following re-building the front 4-C suspension. I don't drive the car as it is our son's, but I took it to the dealer and backing out over the kerb on the driveway, there was a clunk from the rear LHS. Every time I went over a sudden bump the same knock/clunk at the back. Sounded like maybe a rear sway-bar end link?

Asked the shop foreman to test drive it with me and the first speed bump we went over in the parking lot he heard it. He said they would check it before doing an alignment in case it was a rear suspension repair needed which would then need another alignment.

Got a call this morning and they found the rear height sensor on the rear suspension on the LHS had broken off it's mounting point so was dangling. They don't have one in stock so zip-tied it back into position and calibrated the suspension and all seemed ok. I asked them to then check the headlight level motor by re-connecting it and see if it runs all the time still as they are part of the same system.

They called back to say the headlight is now fine and no repair there, but a mere $300 level sensor and an hour to fit and calibrate.

These damn Volvo's never stop taking money out your pocket. Only bonus is I don't need to take the front bumper cover off again for now!

I got a lucky catch on this one, so now I understand the system a little better, any issues like I had it is worth checing the rear level sensors first to make sure the relevant side has not broken off the mounts, especially if you get the knock from the rear over sudden bumps.

Neil.


2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold

scot850
Posts: 5022
Joined: Mon Apr 05, 2010 2:46 pm
Year and Model: 2000 V70 R
Location: Calgary, Alberta, Canada
Has thanked: 4 times
Been thanked: 73 times
Canada

Re: 06 XC70 Headlight level motor

Post by scot850 » Tue Jun 12, 2018 4:19 pm

Actually, having now spoken to the dealer and collected the car, the issue is not the actual sensor (was only $77 CDN actually) but actually the link arm (like a sway-bar link) that had snapped. Foreman said he has never seen that before. Guess as usually I am the lucky one! The parts they need are about $120, and the labor is about an hour as an estimate so the total cost estimate was $300 CDN to fix. Bad but not as bad as I thought!

Neil.


2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold

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