Important features:

• Lamp type :
  • Designed to work with D2S and D2R xenon lamps.
• OEM Compatible Component :
  • OEM compatible control units are often found on the market, which means that they are not produced by the manufacturer, but are still suitable for operation on the vehicles listed.

Additional Information:

• When purchasing a xenon control unit, it is important to check its compatibility with your vehicle to avoid installation or operation problems.
• If in doubt, it is advisable to contact a qualified auto electrician.

• Compatibility :
  • This control unit is compatible with various car models, including:
    • Audi A3 (8L)
    • Audi A4 (8D)
    • Audi A6 (4B)
    • Porsche 911 (996)
    • Skoda Fabia
    • Lancia Thesis
    • BMW E39

The xenon control unit 4B0941471 may need to be replaced for various reasons, mainly related to its malfunction. Here are the most common causes:

• Wear and tear and end of life :
  • Like any electronic component, the xenon control unit is subject to wear. Over time, its internal components can deteriorate, leading to malfunctions.
• Overheating damage :
  • The xenon control unit generates heat during operation. Excessive overheating, due to improper installation or a problem with the cooling system, can damage internal components.
• Damage from humidity or water infiltration :
  • Moisture or water entering the control unit can cause short circuits and damage the electronic circuits.
• Voltage fluctuations :
  • Voltage fluctuations in the car's electrical system can damage the xenon control unit.
• Short circuits :
  • Short circuits inside the headlight, or in the wiring connected to the control unit, can damage it irreparably.

Symptoms of a faulty xenon control unit:

• The xenon headlight does not turn on.
• The xenon headlight turns on and off intermittently.
• The xenon headlight emits a weak light or a different color than normal.
• The xenon headlight flashes.
• error messages on the dashboard.

If these symptoms are present, it is advisable to have the xenon control unit checked by a qualified auto electrician to determine the cause of the malfunction and proceed, if necessary, with its replacement.