BMW 528i Headlights
Easy BMW 528i Diagnosis Guide
The headlights of your BMW 528i are important in making sure you stay safe when driving during nighttime. Eventually, as with other car parts, you will have issues regarding those. There are many possible causes when it comes to problems regarding your BMW 528i headlight's ability to illuminate the area. It depends on what kind of problems they are having, thus it is vital that you diagnose the part systematically. Here are the most common problems one might encounter in regards to headlights, as well as their causes and a few quick fixes:
If you notice that the fixture of your headlight has become clouded, then you should check the lenses. Modern headlights are built using plastics instead of glass like before. Because of this, they could easily be worn down. If this is not remedied quickly, moisture and dirt could build up, which could block the light from going outside. Headlight lens repair kits are very cheap and easy to use, so it is best to get one as soon as this problem comes up.
For dimming lights, check the alternator if it is broken or not. An alternator that does not work properly will not be able to produce enough power to keep the lights on. The battery will not be charged completely and it will eventually die down. Speaking of batteries, be sure to test it as well. You could get a voltmeter to see if it is doing its job of giving the correct amount of electrical power to the bulbs
This can be caused by a lot of factors. The first part to check if this happens is the bulb. A light bulb loosely screwed is a common cause for this kind of problem. All you need to do is to remove it and put it back in a more secured fashion. Do not put too much force into it, else the threads might get damaged and you can't fasten it tightly ever again, forcing you to replace more parts.
If the bulbs are okay, then go inspect the wiring near the headlamp. There is a possibility that it has been loosen, which hinders the flow of electricity towards to bulb. Make the necessary repairs and the flickering should stop.