BMW F30 LCI LED Headlamp Ballast Module - Used Original Parts

Diagnosis and Common Symptoms

As the primary control unit for the F30 LCI's advanced LED lighting system, the Lear TMS (Treiber Modul Scheinwerfer) is responsible for regulating all core headlamp functions. Failure of this module is common, often due to internal component degradation or water ingress from a compromised headlamp seal.

A faulty TMS module will trigger specific warnings on the iDrive display or instrument cluster, such as:

• "Headlight vertical aim control failure"
• "Adaptive Headlight Malfunction"
• "Lighting system failure"

Physical symptoms are equally distinct. You will observe one or more of the following: a complete loss of the low or high beam, flickering of the main LED beam, inoperative "Angel Eye" daytime running lights, or the adaptive lighting failing to swivel during turns.

During a diagnostic scan with workshop-level tools like ISTA/D, a technician will typically identify fault codes pointing directly to the module or the components it controls. Common fault codes include: 8041B6 (Low-beam headlamp faulty), 8041B2 (Daytime running light/parking light faulty), and various LIN Bus communication errors with the Body Domain Controller (BDC).

Introduction

Restore the precise and powerful illumination of your BMW with a fully functional, Genuine headlamp ballast module. This is not an aftermarket replica; it is an original part salvaged from a donor vehicle, offering factory-level performance and integration. Each module undergoes rigorous bench testing by our technicians to confirm perfect operation of all circuits before being dispatched. It is the most reliable and cost-effective solution to rectify headlamp malfunctions and clear persistent dashboard warnings.

Product Details

• Brand: Lear (Genuine BMW Supplier)
• Model Compatibility: BMW 3-Series F30 LCI Sedan & F31 LCI Touring (approx. 2015-2019) with LED Headlights (Option S5A2A) or Adaptive LED Headlights (Option S552A).
• Part Name: LED Headlamp Main Light Driver Module (TMS)
• Condition: Genuine Used (Tested Working)
• Notes: This module controls the primary LED functions (Low Beam, High Beam, DRL). It communicates with the vehicle's BDC via the LIN bus. We strongly recommend inspecting the headlamp housing for signs of moisture, as water damage is the leading cause of failure for the original unit.