Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBMW2013128I 2D CONVERTIBLE, ENG CD N52, STANDARD TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 444 (LIGHTS - SERVICE INFORMATION)LIGHTE46 LSZ CONTROL UNITHOW IT WORKSNOTES
2013 BMW 128i 2D Convertible, Eng CD N52, Standard Trans
How It Works : Notes
2013 BMW 128i 2D Convertible, Eng CD N52, Standard TransSECTION Notes
WARNING: This page does not describe the selected car, but rather 37 other vehicles, including the 2006 BMW 330Ci, 2006 BMW 325Ci, 2005 BMW M3, 2005 BMW 330xi, and 2005 BMW 330i. However, it is still accessible from the selected car via links, so may be relevant.
The range of functions of the light switch cluster includes the following tasks:
- Control and monitoring of the headlights and lamps on the exterior of the vehicle
- Control and monitoring of the direction indicating and hazard warning flasher function
- Dimmer for the instrument and locating lighting (terminal 58g) and the function and locating lighting for the hazard-warning switch
- Evaluation of messages from the rain-light sensor for the automatic driving lights control and for the adaptive headlights
- Communication with the trailer module, if fitted
- Control of the green indicator lamp for the adaptive headlights
- Data exchange via the K bus (see below for detailed description)
- Data management for diagnostics and monitoring (see below for detailed description)
- With option 522 "bi-xenon dipped/main beam headlights", the light switch cluster evaluates faults in the bi-xenon headlights.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.