Parts for your 2017 Subaru Impreza-Exterior bulbs

2017 Subaru Impreza exterior bulbs — what they do and how to look after them

Exterior bulbs are absolutely used on the 2017 Subaru Impreza. Subaru’s 2017 Impreza Owner’s Manual (Lighting section) and genuine Subaru parts catalogues detail serviceable lamps across the vehicle — including headlamps on halogen-equipped models, indicators, reverse and licence plate bulbs, with some trims featuring LED assemblies for DRLs, tail/stop or headlamps that aren’t user-serviceable. So, exterior bulbs are relevant kit on this model.

On a 2017 Impreza, exterior bulbs are there to keep the driver seen and safe — making intentions obvious to other road users and lighting the way on dark or wet nights. Depending on trim and market, the car may use a mix of halogen bulbs and factory LEDs. Typical serviceable positions include front and rear indicators, reverse lights, rear fog (where fitted), and licence plate lights. Halogen-headlamp models also have replaceable low/high beam bulbs, while LED-headlamp variants use sealed modules that should be handled by a Subaru technician.

Good practice for servicing is simple and sensible:

• Do a quick walkaround every month or so (or at each fuel stop) to check all lights, including brake lights with a helper or by reversing near a reflective surface.
• Replace bulbs in pairs on the same axle for even brightness and colour.
• Avoid touching the glass of halogen bulbs — oil from fingers can shorten life, use clean gloves.
• Stick with OE-equivalent wattage and quality brands, cheap blue-tinted bulbs often reduce usable light.
• If upgrading to LED retrofit bulbs for non-headlamp positions, confirm they’re ADR-compliant and won’t trigger bulb-out warnings.

Access is straightforward on most positions. For headlamps on halogen-equipped cars, open the bonnet, remove the rear dust cap, rotate the holder, and swap the bulb, aligning the tabs correctly before refitting the cap. For tail and indicator bulbs, open the boot, release the lamp fasteners or interior trim, twist the holder, and replace the wedge or bayonet bulb. Licence plate bulbs are usually accessed by removing the small lens from the tailgate garnish. Always test operation before refitting trims.

If a lamp is out and the fuse is intact, look for water ingress, heat-discoloured holders, or corroded contacts. LED assemblies that fail typically need a complete lamp unit — don’t force them apart. As part of regular servicing (about every 10,000–15,000 km), ask the workshop to check beam aim, lens clarity, and seals. That keeps the Impreza compliant for Aussie rego checks and NZ WOFs while maximising night-time visibility.

Popular questions about 2017 Subaru Impreza exterior bulbs

Which bulb types fit a 2017 Impreza?
It varies by trim and market. Many cars use halogen H11/HB3 style headlamp bulbs, with wedge bulbs (e.g., 7440/7443 types) for indicators and reverse, while some trims have factory LED headlamps and LED tail/DRL elements. The definitive guide is the Owner’s Manual and the VIN-specific parts listing. If the car has LED headlamps, those modules aren’t standard DIY bulbs.

Can halogen headlight bulbs be swapped to LED?
For halogen-equipped headlamps, retrofit LED bulbs exist but may alter beam pattern and can run foul of ADR/ECE rules if not approved. Many cheap kits cause glare. If the car already has factory LED headlamps, they’re not user-replaceable bulbs. For peace of mind, stick to high-quality halogens or consult a lighting specialist about compliant upgrades.

How often should exterior bulbs be replaced or checked?
There’s no fixed interval, but checking every 6 months or 10,000 km is wise. Replace as soon as dimming or flicker appears, and do both sides for matched output. If bulbs fail frequently, have voltage and earths checked, and inspect housings for moisture.