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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > UK > e91 main beam bulbs



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      12-29-2012, 05:10 PM   #1
oldbilly
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e91 main beam bulbs

e91 2006 330d, I have xenons on the low beam and would like to change the main beam to xenons too, does anyone have any info on what type of bulbs I would need, or is it a case of just fitting the same oe xenon bulbs as the low beam xenons.
Also how can I adjust the low beam, I know it has a self leveling system and I noticed some adjusting points on the lamps but they look like they are for the high beam adjustment only.
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      12-30-2012, 02:31 AM   #2
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Short answer: you can't.

High beam bulbs have to be halogen. If you're not happy with yours for whatever reason, why not try some better bulbs - Osram Nightbreakers or Philips Extreme Vision?
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      12-30-2012, 04:27 AM   #3
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cheers! will have look for the brighter bulbs.
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      12-30-2012, 05:21 AM   #4
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aren't your xenons bi xenon anyway? it should say so on the headlamp ring.
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      12-30-2012, 05:15 PM   #5
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Quote:
Originally Posted by ///ajd View Post
aren't your xenons bi xenon anyway? it should say so on the headlamp ring.
never thought of that, I suppose they are! although the high beams are halogen, another thing I'd really like to do is adjust the dipped hight as i'm finding it a bit low.
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      12-31-2012, 02:43 AM   #6
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The low beam lamp will be checked for correct alignment at the MOT, any adjustment you make will only blind other road users and cause you an MOT fail.
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      12-31-2012, 12:49 PM   #7
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Originally Posted by Dr Dave View Post
The low beam lamp will be checked for correct alignment at the MOT, any adjustment you make will only blind other road users and cause you an MOT fail.
not if they are low and within the test limits, the only incorrect adjustment is to high, if they are lower, the car can still pass, i'm sure the dipped beams on mine are incorrect adjusted.
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      12-31-2012, 02:02 PM   #8
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All low beam lamps must aim within the lamp tester's criteria. No ifs and buts.
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      12-31-2012, 07:48 PM   #9
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All E9x (with xenons) have bi-xenons, ie the full and dipped beams are the same bulb! Once the bulb is ignited it remains lit continuously through dim/full until the headlights are switched off. The full beam is achieved by lifting a shutter that when dipped blocks off some light, the lifted shutter provides full beam. The inner halogens closest to the kidney grilles are for vehicles with adaptive headlights here they are lit while the xenon beam swivels not to have any dark spots on the road I presume! They are also used for headlight flash, when you flash your headlights the xenon doesn't come on its a simple flash of the inner halogens!
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      01-01-2013, 04:48 PM   #10
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The above is incorrect..

The pre LCI saloon and tourings (at least) are not bi-xenons, I wish they were! My main beam and flash are halogen. Also could do with being upgraded.

I'm probably going to add Philips X-treme vision but they're meant to be very awkward to change.
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      01-01-2013, 06:25 PM   #11
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I have a September 2006 built E90 330d and the xenons do both dipped and full beams and I'm 100% sure of this!

So what your saying on yours is the full beams are the halogens and xenons together?
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      01-02-2013, 02:51 AM   #12
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Quote:
Originally Posted by PhilM View Post
The above is incorrect..

The pre LCI saloon and tourings (at least) are not bi-xenons, I wish they were! My main beam and flash are halogen. Also could do with being upgraded.

I'm probably going to add Philips X-treme vision but they're meant to be very awkward to change.
Definitely wrong. All e9x are bi-xenon. The inner halogens on non-adaptive cars supplement the high-beam and are really a styling feature as BMWs traditionally have twin headlamps but your D2S xenon most certainly has a solenoid shutter for high beam; ergo: bi-xenon.
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      01-02-2013, 06:27 AM   #13
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I'll go outside and check...

When main beam goes on the light looks more yellowy. Like a halogen would.
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      01-02-2013, 06:34 AM   #14
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You need to observe the xenon as you switch, either by reflection or by getting someone else to switch to main beam (not flash). If your shutter does not switch (so you see a visible change in the xenon output / beam pattern) then they're faulty because it definitely has them.
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      01-02-2013, 07:21 AM   #15
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Well I fully stand corrected!!!

They switch perfectly... I deffo need some upgraded bulbs then.

They dipped beam is good but I don't find main beam as good as some decent halogens.

Thanks for making me go check, i can't understand why I never did.
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      01-02-2013, 07:26 AM   #16
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Quote:
Originally Posted by xenon View Post
Definitely wrong. All e9x are bi-xenon. The inner halogens on non-adaptive cars supplement the high-beam and are really a styling feature as BMWs traditionally have twin headlamps but your D2S xenon most certainly has a solenoid shutter for high beam; ergo: bi-xenon.
Unfortunately, it is not correct.
E92 / 93 comes with bixenons.

Pre-LCI E90/91 has halogen hi-beams. However on LCI xenons (E90/91), you have bi xenons.

I may be wrong, but this is what I have gathered from their coding files.
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      01-02-2013, 07:55 AM   #17
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They all have the shutter but LCI cars changed the arrangement for the corona rings. All are bi-xenon however (including pre-LCI) with the solenoid shutter and have been since the E46 facelift.
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      01-02-2013, 09:39 AM   #18
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Quote:
Originally Posted by PhilM View Post
Well I fully stand corrected!!!

They switch perfectly... I deffo need some upgraded bulbs then.

They dipped beam is good but I don't find main beam as good as some decent halogens.

Thanks for making me go check, i can't understand why I never did.
The mainbeam on mine is ok, but I dont like the yellow effect from the halogen bulbs, I thought it would be quite easy with a hid coversion kit, so why cant i just install single xenon bulb conversion in place of the high beam halogen bulbs?
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      01-02-2013, 10:01 AM   #19
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Quote:
Originally Posted by oldbilly View Post
The mainbeam on mine is ok, but I dont like the yellow effect from the halogen bulbs, I thought it would be quite easy with a hid coversion kit, so why cant i just install single xenon bulb conversion in place of the high beam halogen bulbs?
You can do that. You will have to get the ballast which are BMW friendly (error free) or you have to code out the bulbl checks if you go for ordinary ballasts.
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      01-02-2013, 10:05 AM   #20
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Quote:
Originally Posted by xenon View Post
They all have the shutter but LCI cars changed the arrangement for the corona rings. All are bi-xenon however (including pre-LCI) with the solenoid shutter and have been since the E46 facelift.
Have you checked Pre-LCI E90 / 91 with xenons and are they bi-xenons?
AFAIK, H7 bulbs fire when you turn on the high beam.
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      01-02-2013, 10:06 AM   #21
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Quote:
Originally Posted by makkan00 View Post
Have you checked Pre-LCI E90 / 91 with xenons and are they bi-xenons?
AFAIK, H7 bulbs fire when you turn on the high beam.
As they also did on the e46.

There is a very good reason why manufacturers do not use HID bulbs for high-beam (other than by switching the solenoid mask) and that is because discharge bulb systems suffer a dramatic reduction in life if they are switched off and on a number of times, particularly in close succession as one might do when driving on main beam as you dip for oncoming traffic.
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      01-02-2013, 02:42 PM   #22
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Quote:
Originally Posted by makkan00 View Post
Have you checked Pre-LCI E90 / 91 with xenons and are they bi-xenons?
AFAIK, H7 bulbs fire when you turn on the high beam.
I originally thought this on my pre-LCI e90..

Having been out and actually looked my main beam is xenon too with the shutter.. The inner halogen stays off. So bi-xenon.

The only time the inner halogen lights up is when you do a quick flash by pulling it towards you briefly.
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