The Volkswagen Routan uses D1S and H11 bulb sizes for both high beam and low beam headlight applications. Replacement specifications in the chart span 2009 to 2014 model years.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Volkswagen Routan carried two distinct headlamp system options across its 2009-2014 model years: HID (high-intensity discharge) and halogen capsule. Each system requires a different bulb type, and the two are not interchangeable.
Rotuan vehicles equipped with HID headlamps use the D1S bulb for both high and low beam functions. The D1S operates at 85 volts and 35 watts, uses a PK32d-2 base, and incorporates an integral ignitor within the bulb unit itself. It is designed specifically for projector-type housings.
The D1S is an ECE-rated discharge bulb, meaning it produces light through an electrical arc between two electrodes within a xenon gas-filled quartz capsule rather than through a heated filament. This arc-based operation is why the bulb requires a high-voltage ignitor and is incompatible with standard halogen sockets.
Routan vehicles equipped with halogen capsule headlamps use the H11 bulb for both high and low beam positions. The H11 is a single-filament halogen bulb rated at 12 volts and 55 watts, fitted with a PGJ19-2 base.
The H11 carries ECE approval and is also approved for use in the United States, reflecting its acceptance across multiple regulatory markets. Its single-filament design means it serves one lighting function per housing position.
Because the D1S and H11 operate on fundamentally different electrical principles and use physically distinct bases, a vehicle fitted with HID headlamp housings cannot accept H11 bulbs, and vice versa. The correct bulb type is determined by the headlamp housing installed on the vehicle, not by model year alone.
Both bulb types apply uniformly to the high beam and low beam positions across all six model years covered in the specifications, indicating that the Routan's headlamp architecture did not change between 2009 and 2014.