E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > Tuning & Tech > Lighting Forum

Lighting Forum
Angel Eyes, DDEs, lighted rings, Clear Turn Signals, LEDs, Xenon, HID, or Bi-Xenon. If it lights up and you want to discuss it, post here!

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 07-22-2014, 12:51 PM   #1
robt_sf
Registered User
 
Join Date: Jul 2006
Location: San Francisco
Posts: 170
My Ride: 2003 330Ci
I think I made the BMW gods angry

I did the victory dance last night. Evidently the BMW gods don't like cheap easy fast fixes for problems, let alone celebrating them.

I was made aware on Friday by my local mechanic that the passenger Xenon bulb was out. When I got in the car I was surprised to see that there was no bulb out light on the dash. I ordered a new OEM Osram bulb and it showed up yesterday. Spent a few minutes putting it in, and it didn't work. I decided to unplug the power to the ballast and repluged it in. BAM the lights comes on. (Might brighter than the other side, I probably should replace the other one too..)

I did my little who-hoo that was a cheap fix. When I turned the car back on to move it inside the light was off. Crud, I had a bad feeling from the get go, and this confirmed it. This morning I pulled out my multi-meter since I had more light and started to diagnose whats going on. The following is what I measured

1) Both lights receive 10.2 volts power to the ballasts (I think thats fairly low, I had to jump start the battery this morning. I do attribute that to sitting with the lights on without the engine running.

2) Both hi-beams work

3) There is no voltage going to the bulb terminal for the Xenon.

So I'm obviously thinking it could be the ballast or ignitor.

What I'm really kind of dreading is that its the LCM. Something is telling me thats what I'm going to discover is the problem. If the LCM was fried, could that cause one side to be out (even though there is voltage going to it).

I'm debating if I should just bite the bullet and buy a used light, or a ballast /ignitor combo.
__________________


robt_sf is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 07-22-2014, 02:31 PM   #2
philliplong
Registered User
 
Join Date: Jan 2013
Location: Norman, OK
Posts: 399
My Ride: 2002 325CI
I would replace the battery first. It may sound dumb but a bad battery will cause all types of weird problems. And if it is going bad you will have to replace it eventually. Your headlights should be able to stay on awhile without the car being on.

Sent from BimmerApp mobile app
__________________

Last edited by philliplong; 07-22-2014 at 02:32 PM.
philliplong is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Censor is ON





All times are GMT -5. The time now is 06:33 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
(c) 1999 - 2011 performanceIX Inc - privacy policy - terms of use