RoyBatty

Thanks Steve- appreciate you replying The MOT failure certificate is vague - just says 'headlight aim too far and to the right. Nearside {4.1.2(a)} And then the same for offside. But I haven't touched the main beam bulbs so I assume it's the due to the dipped beam bulbs I replaced. One thing I should have mentioned is that I went with aftermarket bulbs to save money - Phillips at about 60 quid a pair. Having read some more about the awkwardness of adjusting them using the screws accessed from the top of the engine compartment, and the need to adjust both mains and dipped when doing that, I'm now thinking I should have just bit the bullet and replaced with OEM which were what were on the car before (if both lamps on a headlight need to be adjusted the same amount of turns which is what I've read, then fixing the dipped beams will surely throw the mains out of whack) I say that because I don't have any precise way of measuring whether the lights are in spec, and any work by the garage will blow through the cost difference of OEM vs aftermarket pretty quickly - and reading around the internet it sound like AFS and the whole setup is difficult to calibrate once you need to start fiddling with the adjustment screws. So I think I'm going to go with OEMs after all and see if that does it. WIll post back after retesting in case it helps anyone else. Thanks

Hi All, I've recently replaced the main beam headlight bulbs on my '07 LS460 using a guide on youtube to go in through the wheel arches. They're working fine but I've just had an MOT failure because both headlights are aimed too high and to the right. Has anyone else had issues with the beam pattern after replacement and how did you fix it? I'm wondering whether I made a mistake when fitting the bulbs - I can't remember whether they could only go in a certain way or whether they could be rotated and maybe I got the rotation wrong. Or maybe this is normal and I now need to play with the adjustment screws to get them back into spec? Very grateful for any advice on this - it's an expensive job in labour at the dealership that I was trying to avoid - thanks