Parts for your 2019 Subaru Impreza-Interior bulbs

2019 Subaru Impreza interior bulbs — what they do and how to look after them

Based on the 2019 Subaru Impreza Owner’s Manual (Lighting and Maintenance sections) and Subaru’s Technical Information System (workshop procedures for interior lamps), this model is factory‑fitted with interior lighting that uses replaceable bulbs and, on some trims, integrated LED lamp units. That makes interior bulbs absolutely relevant to the 2019 Impreza, covering the front map lights, centre dome light, boot/cargo light, vanity mirror lights and glovebox light.

These little globes do more than brighten the cabin. They help with safety and convenience at night, make seatbelt checks easy, and stop gear rolling around unseen in the boot. Many 2019 Imprezas use common wedge (T10/W5W) or festoon (around 31 mm) bulbs, while higher trims in some markets have LED modules that aren’t serviceable at bulb level.

• Typical locations: front map lights, centre dome, boot/cargo, vanity mirrors, glovebox.
• Common symptoms of ageing: dim or yellowed light, intermittent flicker, slow fade.

For servicing, there’s no set interval—replace on condition. During routine checks, make sure each lamp operates on “DOOR” and “ON”. If every interior light is out, check the interior light fuse in the cabin fuse box before chasing wiring faults. When replacing incandescent bulbs, avoid touching the glass with bare fingers, as oils can shorten lifespan. Use a plastic trim tool to pop the lens so you don’t mark the headlining, and confirm the exact bulb type in the owner’s manual or parts catalogue by VIN.

Thinking of an LED upgrade? Quality, CANbus‑friendly LEDs can give brighter, whiter light and draw less current. Match the base and length (wedge vs festoon), note LED polarity, and choose a colour temperature you like (warm white feels more OEM, cool white looks crisp). Some Imprezas already have factory LEDs, those assemblies are replaced as a unit if they fail, so budget accordingly. After any change, check dimming and door‑trigger functions still behave as expected.

Handy tip: if the cabin or cargo lamp is left in “ON”, the Impreza’s battery saver may time it out after a while, but don’t rely on it—set lamps to “DOOR” before locking up to avoid a flat battery on a chilly morning.

Popular questions about 2019 Subaru Impreza interior bulbs

What bulb types fit the interior lights on a 2019 Impreza?
It varies by trim and market. Many cars use T10/W5W wedge bulbs for map/dome lights and a 31 mm festoon in the boot or vanity. Some higher‑spec models use sealed LED lamp units instead. The sure way is to check the owner’s manual or a dealer parts lookup against your VIN.

Can the interior bulbs be upgraded to LED?
Yes. Choose quality, CANbus‑compatible LEDs in the correct size and base, and remember LEDs are polarity‑sensitive. Be mindful that some positions may already be LED from factory, in which case the whole lamp is replaced if needed. After upgrading, confirm the soft‑fade and door‑trigger still work properly.

Why do the interior lights stay on or drain the battery?
Common causes are a lamp left in “ON”, a door not fully latched, a sticky door switch, or the dimmer/switch set incorrectly. Set lamps to “DOOR”, shut all doors firmly, and if all lights fail together check the relevant fuse. The battery saver may switch them off after a period, but it’s best not to depend on it.