4K0941572CG Matrix LED Headlight Module for Audi Hella 211101-22AA Replacement Headlight Control Unit

The control unit with OEM code 4K0941572CG (often produced by Hella for the VAG Group) is an electronic control and power module for LED headlights (also known as LED ballast or main light control unit).

What is it for?

This control unit manages all the electronics of the advanced front light clusters:

• Lighting Control: Controls the ignition, energy management and intensity of the LED low and high beam headlights.

• Management of advanced functions: It interfaces with the on-board network (via CANbus protocol) to coordinate the daytime running lights (DRL), the integrated direction indicators and the adaptive or Matrix LED headlight systems (dynamic adjustment of the light beam to avoid dazzling other vehicles).

• Levelling adjustment: Manages the automatic correction motors for the height of the headlight beam based on the vehicle load.

On which cars is it installed?

The module is mainly used on vehicles in the Audi range equipped with Full LED or Matrix LED headlights:

• Audi Q3 and Q3 Sportback (F3 generation, produced approximately from 2019 onwards).

• Other models on the VAG platform that share the 4K0941572 series headlight architecture (such as some variants of the recent compact and SUV range, e.g. Audi A1).

Audi part numbers:

• 4K0941572CG
• 211101-22AA

Audi compatibility list:

• Audi A1 GB Sportback
• Audi A1 Citycarver 2018 2019 2020 2021 2022 2023
• Audi Q3 SQ3 F3 Sportback 2019 2020 2021 2022 2023
• New Audi Q8 SQ8 2019 2020