S40 headlight adjustment

bradams · Aug 13th, 2010, 13:52

Can anyone point me to some illustrated instructions on how to adjust the dipped headlight aim (vertical adjustment) on a 2005 C40?

This may seem like a stupid question, as there are little white plastic hex heads to the side of the lamp cluster just like my S60, but nothing happens when I turn them. Have I got the wrong thing or am I missing something obvious?

Thanks.

Metblackrat · Aug 13th, 2010, 17:17

The adjusters are quite weak so I would suggest removing the headlight unit (a 30 sec job) and using an allen key directly on the adjuster on the inner end of the light unit.

I have access to a beam alignment machine and I found that three full revolutions of the adjuster made a massive difference and still kept the beam pattern within the required limit.

bradams · Aug 14th, 2010, 10:02

Thanks, Metblackrat; I took the units out and indeed the gears were jumping. I'll just have to adjust them 'out of the box' and by trial and error.

Aug 13th, 2010, 13:52	#1
bradams Junior Member Last Online: Mar 9th, 2023 20:33 Join Date: Jun 2010 Location: East Kilbride	S40 headlight adjustment Can anyone point me to some illustrated instructions on how to adjust the dipped headlight aim (vertical adjustment) on a 2005 C40? This may seem like a stupid question, as there are little white plastic hex heads to the side of the lamp cluster just like my S60, but nothing happens when I turn them. Have I got the wrong thing or am I missing something obvious? Thanks.

Aug 13th, 2010, 17:17	#2
Metblackrat Senior Member Last Online: Jul 19th, 2012 22:29 Join Date: Mar 2006 Location: Hatfield	The adjusters are quite weak so I would suggest removing the headlight unit (a 30 sec job) and using an allen key directly on the adjuster on the inner end of the light unit. I have access to a beam alignment machine and I found that three full revolutions of the adjuster made a massive difference and still kept the beam pattern within the required limit.

Aug 14th, 2010, 10:02	#3
bradams Junior Member Last Online: Mar 9th, 2023 20:33 Join Date: Jun 2010 Location: East Kilbride	Thanks, Metblackrat; I took the units out and indeed the gears were jumping. I'll just have to adjust them 'out of the box' and by trial and error.

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