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Parts for your 2017 Subaru Impreza-Interior bulbs
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2017 Subaru Impreza interior-bulbs: what they do and how to look after them
Per the 2017 Subaru Impreza Owner’s Manual (Lighting — Interior light section) and Subaru service information for the GK/GU series, this model is fitted with interior-bulbs. The cabin uses replaceable bulbs for the front map lights, centre dome light, cargo/boot light, and often the vanity mirror and glovebox lamps. Depending on trim, these are commonly W5W (T10) wedge and 31 mm festoon types, with some variants delivered with LED elements in specific positions.
These interior-bulbs light up the cabin when doors open, help passengers find items at night, and make loading the boot safer. They’re small, but they make the Impreza feel modern and user-friendly on dark mornings and late-night runs.
- Typical locations: front map lights, centre dome, cargo/boot, vanity mirrors, glovebox
- Typical types: W5W (T10) wedge and 31 mm festoon (verify by trim and body style)
As part of regular servicing, it’s smart to check that all interior lamps switch on, dim and switch off properly. If a bulb is out or dim, replace like-for-like with the correct wattage to avoid heat damage to the lens. Turn the ignition off, let hot bulbs cool, then gently pry the lens with a plastic trim tool. Note orientation on removal, especially if upgrading to LEDs (they’re polarity sensitive).
For owners keen on a crisper, whiter look, quality LED replacements are a neat upgrade. Interior circuits on the 2017 Impreza generally aren’t CAN-bus monitored, so error messages are unlikely. Choose LEDs designed for automotive use that support fade-to-off dimming, and avoid ultra-high-output units that can cause glare.
If a new bulb doesn’t light, flip it 180° (LEDs), check the relevant interior light fuse in the cabin fuse box, and make sure the dome switch isn’t set to “OFF”. A door-ajar switch or hatch not fully closed can keep lights on, the dimmer roller set to max can do the same.
Good practice during routine services (every 12 months or 15,000 kilometres) includes cleaning lenses, checking switches, and keeping a couple of spare bulbs in the glovebox. Dispose or recycle failed bulbs responsibly.
Popular questions about 2017 Subaru Impreza interior-bulbs
What bulb sizes fit the 2017 Subaru Impreza’s interior lights?
Most Australian and New Zealand models use W5W (T10) wedge bulbs for map and cargo lights, and 31 mm festoon bulbs for the centre dome and some vanity lamps. Bulb types can vary by trim or body style, so it’s best to confirm against the vehicle placard or the Owner’s Manual before buying.
Can LED interior-bulbs be used without errors or flicker?
Yes, quality LED replacements generally work fine in the Impreza’s interior without warnings. Pick LEDs that support soft fade and have stable drivers to avoid faint afterglow. If a lamp doesn’t light, reverse its orientation to correct polarity.
Why won’t my interior lights turn off?
Common causes include the dome switch set to ON, a door or hatch not fully latched, or the dimmer roller at maximum. If the lights still won’t time out, check the interior light fuse and have the door-ajar switches inspected by a technician.
