BMW 3 Series 2020-2023 Lights and Bulbs User Manual
Lights and Bulbs
General information
Lights and bulbs make an essential contribution to driving safety. All headlights and lights are made using LED or laser technology. Some items of equipment use light-emitting di‐odes installed behind a cover as a light source. These light-emitting diodes are related to conventional lasers and are officially designated as Class 1 light-emitting diodes. The manufacturer of the vehicle recommends that you let a dealer’s service center or another qualified service center or repair shop perform the work in case of a malfunction.
Safety information
Warning
Focused laser light can irritate or permanently damage the retina of the eye. There is a risk of injury. The manufacturer of the vehicle recommends that the work on the lighting system including bulb replacement be performed by a dealer’s service center or another qualified service center or repair shop.
Warning
Intensive brightness can irritate or damage the retina of the eye. There is a risk of injury. Do not look directly into the headlights or other light sources. Do not remove the LED covers.
Headlight glass
The inside of the headlight glass can fog up in cool or humid weather. When driving with the lights switched on, the condensation evaporates after a short time. The headlight glass does not need to be changed. If despite driving with the headlights switched on, increasing humidity forms, for instance, water droplets in the light, have the headlights checked?
Vehicle battery
General information
The battery is maintenance-free. More information about the battery can be requested from a dealer’s service center or another qualified service center or repair shop.
Safety information
DANGER
Contact with live components can lead to an electric shock. There is a risk of injury or danger to life. Do not touch any components that are under voltage.
Warning
Vehicle batteries that are not compatible can damage vehicle systems and impair vehicle functions. There is a risk of an accident and damage to property. Only vehicle batteries that are compatible with your vehicle type should be installed in your vehicle. Information on compatible vehicle batteries is available at your dealer’s service center.
Register the battery to the vehicle
The manufacturer of the vehicle recommends that you have a service center or another qualified service center or repair shop register the vehicle battery to the vehicle after the battery has been replaced. Once the battery has been registered again, all comfort features will be available without restriction and any Check Control messages displayed which relate to comfort features will disappear.
Charging the battery
General information
Make sure that the battery is always sufficiently charged to guarantee that the battery remains usable for its full-service life.
A discharged battery is indicated by a red indicator light.
Charge the battery when acceleration is insufficient. The following circumstances can have a negative effect on the performance of the battery:
- Frequent short-distance drives.
- The vehicle is not used for more than a month.
Safety information
NOTICE
Battery chargers that charge the vehicle battery via sockets or cigarette lighters in the vehicle may overload or damage the 12 V electrical system. There is a risk of damage to property, among other potential damage. Only connect battery chargers for the vehicle battery to the starting aid terminals in the engine compartment.
Charging the battery
Charge the battery only when the engine is off and via the starting aid terminals in the engine compartment. With Mild Hybrid technology: charge the battery only when the hood is opened.
Additional information:
For starting aid terminals, refer to page 367.
Power interruption
After a power interruption, some equipment needs to be newly initialized or individual settings updated, for example:
- With the Memory function: store the positions again.
- Time: an update.
- Date: an update.
- Glass sunroof: initialize the system.
Mild Hybrid technology
Principle
Part of the Mild Hybrid technology is a battery that works with a voltage of 48 volts. Mild Hybrid technology can lower the fuel consumption. Mild Hybrid technology influences the following functions.
Additional information:
Safety information
DANGER
Contact with live components can lead to an electric shock. There is a risk of injury or danger to life. Do not touch any components that are under voltage.
Overview
The battery for the Mild-Hybrid technology is located under a cover in the engine compartment on the front passenger side.
Removing the cover
- Turn lid up to the opened lock symbol arrow 1.
- Remove cover, arrow 2.
Information
A purple cable leads from the battery to the center of the vehicle. Do not replace or work on the battery for the Mild Hybrid technology.
Reference Links
View Full User Guide: BMW 3 Series 2020-2023 User Manual
Download Manuals: https://www.bmwusa.com/owners-manuals.html