5DV009000 00 D1S Xenon 35W Ballast Control Unit — pack of 1 What it is Ballast control unit designed specifically for 35W D1S xenon headlight systems. Single unit in pack. Key benefits — why you need it Restores reliable ignition and consistent light output for D1S 35W xenon lamps, resolving flicker or failure caused by a faulty ballast. Compact design fits common headlight assemblies, simplifying replacement and reducing installation time. Uses standard automotive connectors for straightforward plug-and-play replacement without custom wiring. Controls ballast operation to protect the xenon lamp and vehicle power circuit, helping prevent repeated lamp failures or electrical faults. Important attributes Function: Ballast control unit for ignition and regulation of 35W D1S xenon headlights. Compatibility: Specifically for D1S 35W xenon lighting configurations; intended as a direct replacement where this model is required. Size: Compact form factor for easy fitment in typical headlight housings (check physical dimensions against your vehicle). Connectors: Standard automotive connector interfaces to match OEM wiring harnesses. Pack quantity: Single unit (pack of 1). Use scenarios / applications Replace a failed ballast in a D1S 35W headlight to restore original lighting performance and eliminate start-up or flicker issues. Routine maintenance or repair when servicing vehicles equipped with D1S 35W xenon systems, ensuring consistent ballast control across both headlights. Fleet maintenance to standardize replacement parts for vehicles using D1S 35W xenon lighting, simplifying inventory and repairs. Installation and fitment notes Verify vehicle compatibility, connector type, and physical fit before purchase to ensure correct installation. Intended as a replacement control unit for D1S 35W xenon systems only; not compatible with other bulb types or wattages.