How to Activate the Headlight Cleaning Function on a BMW?
3 Answers
Turn on the low beams, then push the turn signal lever forward to activate the high beams, and finally press and hold the windshield wiper lever toward the steering wheel for 5 seconds. Additional relevant information is as follows: 1. The headlight cleaning system refers to a water outlet located below the headlights, which can be used to clean dust and dirt from the headlights at any time. During nighttime or low-light driving, rain and dust can reduce the illumination of the headlights by up to 90%, severely impairing the driver's visibility and posing a significant safety hazard. Ensuring adequate headlight illumination and providing the driver with clear visibility becomes a critical issue that needs to be addressed in such situations. The headlight cleaning system offers a simple and effective solution to this problem. 2. The headlight cleaning system is primarily used on vehicles equipped with xenon headlights. This is because xenon lights are extremely bright and can cause glare for oncoming drivers. Therefore, xenon headlights are usually equipped with lenses to adjust the light beam to a reasonable angle, minimizing the impact on other drivers and ensuring road safety. However, if the headlight covers are covered with mud, debris, or other obstructions, the scattering of the light can be affected, necessitating cleaning.
A friend of mine was driving my BMW 5 Series the other day and asked about this. It's linked with the headlight cleaning system, so there's no need to look for a separate switch. The key is you have to turn on the headlights first – then when you use the windshield washer function, it automatically activates the headlight washers too. Just hold down the windshield washer stalk on the right side of the steering wheel for more than two seconds. While the windshield gets sprayed, you'll see two small nozzles pop out beneath the headlights and give them a quick wash. Though I've noticed in winter when the washer fluid freezes, the mechanism might get stuck. Also those nozzles clog easily – poking them with a needle every six months works wonders. These little features on luxury cars really require some attention to remember.
From my experience with my old X3, I've figured out that most BMWs require two conditions to activate the headlight washers. First, turn the light knob to AUTO or manually switch on the low beams. Then, when you wash the windshield, the headlights get cleaned automatically. Remember to press the washer lever firmly and hold it for about three seconds – too light or too quick won't do the trick. Once during a long trip, I noticed the left headlight washer wasn't responding. Turns out the nozzle angle got knocked out of alignment during car washing. A quick 30-second adjustment at the dealership fixed it.
