D4 high-beam alignment

**Graeme** · 1st January 2010, 09:24 PM

Can the high beam be aligned seperately from the bi-xenons? I've just discovered that the RH is especially out of alignment and is way up and to the right yet the bi-xenons are where they should be.

I replaced the original globes with the +50s from my D2 before trying the lights so it could be the globes except they were fine in the D2. I've just reseated the RH globe but its still the same. I suppose I'll have to refit the originals to prove the point but it seems there might be a problem with the assembly.

**amaruskanic** · 2nd January 2010, 10:57 AM

Graeme,
Check you havent accidently installed it upside down. I did this on my D2 with those bulbs once....

**Graeme** · 2nd January 2010, 09:30 PM

Thanks - my 1st thought but the bulbs have been checked as fitted properly.

At least one of them shakes its bi-xenon on low beam over bumps so more investigating is req'd.

**sniegy** · 2nd January 2010, 09:55 PM

What have you done

......

**Jesse B** · 2nd January 2010, 10:16 PM

Graeme,

If it's any consolation to you, the one time I drove a short distance at night in my D4 the high beam alignment seemed all over the shop too. Good for possum spotting, I thought - but it was only a brief drive and not fully dark yet, so hard to really tell. Will be going for a proper trundle one night soon, so will check it out then - but am now suspicious it might be the same issue as yours. My globes are standard, still. Will report in a day or two.

Otherwise am loving the bus - 3000 km up in 2 weeks, almost all on highways at this point, but have a smile a mile wide at this point.

Jesse

**stig0000** · 2nd January 2010, 10:30 PM

the hids are adjusted my computer,, so they will allways be allinged, but the highs for summ resion you cant adjusts sepret, there is a agjusting screw there but it moves the hole lot around,,

**Graeme** · 3rd January 2010, 05:58 AM

Originally Posted by Jesse B

Good for possum spotting

My thoughts exactly last night when driving through overhanging trees - both sides light-up high in the trees. I'll point it a wall tonight to properly identify the souce. I'm glad I fitted my old HID-converted driving lights.

**Graeme** · 3rd January 2010, 06:14 AM

Originally Posted by Jesse B

Otherwise am loving the bus - 3000 km up in 2 weeks, almost all on highways at this point, but have a smile a mile wide at this point.

Apart from the 500 km drive home, I did my first real drive yeaterday (900 km) and am still unhappy with the ride on rough roads. Maybe my expectations are unrealistically high but I'm sure my brief D3 drive was much better. No permagrin for me yet but hopefully it will come soon.

**Graeme** · 3rd January 2010, 06:26 AM

Originally Posted by sniegy

What have you done

......

Nothing either of us did, I suspect.

**Graeme** · 3rd January 2010, 08:47 AM

After having a proper look with the vehicle in a shed, its obvious that the bi-xenon aim (shielded & unshielded) is substantially lower than that of the high beam. No such problem with the D2a lights.

The RH aim was a little higher than the LH so that's now corrected. I've twisted the prongs of the RH halogen globe to point the globe upwards a little which has lowered the beam although still not low enough. Lowering the bi-xenon would make both its low and high beam too low and as its high beam is better than the halogen's, having the halogen's beam too high is the lesser of 2 evils. Maybe if I get to install an HID kit to replace the halogens I will be able to adjust the bulb's fitment to get a better aim.

The bi-xenons shaking over bumps is a combination of stiff suspension and mounts that are not rigid enough, as thumping the outer bottom corner of a headlight assembly produces the shake.

Overall, I'm not impressed with the headlight arrangement.

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