Parts for your 2011 Subaru Impreza-Interior bulbs

2011 Subaru Impreza interior bulbs: what they do and how to look after them

Based on the Subaru Owner’s Manual for the 2011 Impreza/WRX/STI, the Subaru Service Manual available via Subaru TechInfo, and the Subaru FAST parts catalogue, the 2011 Subaru Impreza is fitted with multiple interior light bulbs from factory. These include dome and map lights, vanity mirror lights, a glovebox lamp and a luggage/boot lamp depending on body style and trim. So, interior bulbs are absolutely relevant on this model and are considered normal service items.

Inside a 2011 Impreza, interior bulbs do more than just brighten things up. They help with night-time visibility in the cabin, make it easier to find switches and seatbelts, and improve safety when loading the boot or checking maps. Typical fitments on this generation include festoon-style bulbs for the dome and luggage lights and small wedge (T10) bulbs for map, vanity and glovebox positions. Exact wattage and styles vary by trim, Subaru’s manuals specify matching the original wattage when replacing.

As part of regular servicing, a quick interior lighting check is smart. Look for flickering, slow-to-illuminate lamps or a yellowed lens, and confirm all doors trigger the dome light. Keeping the lenses clean helps brightness, and replacing bulbs in pairs (where practical) keeps the lighting even. If upgrading to LED, choose quality, low-EMI bulbs with the correct festoon length or T10 base, and note LEDs are polarity-sensitive—if they don’t light, rotate them 180 degrees. Many LEDs draw less current and run cooler, which is handy in our warmer months.

Handy replacement tips for a 2011 Impreza:

• Switch ignition off and let hot bulbs cool.
• Use a plastic trim tool or a flat blade wrapped in tape to ease the lens off without marking the headlining.
• Wear gloves or use a clean cloth—oils from fingers can shorten halogen bulb life.
• Match bulb type and wattage to the original as per Subaru guidance, test before refitting the lens.
• If a new bulb won’t light, check the “ROOM”/interior fuse and the door switch settings on the dome lamp.

For hatch models, don’t forget the boot lamp, a fresh bulb there makes loading gear at night far easier. If a light stays on, check the dome switch position and that all doors and the hatch are properly latched—common culprits noted in Subaru service literature.

Popular questions about 2011 Subaru Impreza interior bulbs

Which bulb sizes fit the interior lights?
Most 2011 Impreza trims use festoon bulbs for the dome and boot lamps and T10 (wedge) bulbs for map, vanity and glovebox positions. Variations exist by body style and market, so it’s best to confirm against the owner’s manual or the original bulb markings before buying replacements, especially if upgrading to LED.

Why do my interior lights stay on?
This is often caused by the dome switch being set to ON, a door or hatch not fully latched, or a sticky door-ajar switch. If the lights don’t time out after a short period, check the switch positions, close each door firmly, and inspect the “ROOM”/interior fuse. Subaru’s manuals also note that the courtesy light timer can keep lamps on briefly after locking.

Can LEDs be used inside the cabin?
Yes, many owners fit quality LED replacements for a brighter, whiter cabin light and lower power draw. Choose LEDs that match the festoon length or T10 base, and ensure they’re designed for automotive use. Mind the polarity, check for any flicker with the dim/out timer, and avoid overly blue or dazzling options that can be harsh at night.