Subaru Crosstrek Wing Mirror: Specs, Fitment & Common Faults

On the Crosstrek, UK-spec cars genuinely don't fold via the electric motor at all, despite the mirror unit being physically the same as the JDM part.

Illustration for editorial purposes

OEM Part Numbers

Accuracy note: genuinely worth knowing: Crosstrek owners have reported mirror glass replacement alone (rather than the entire housing) as a genuinely cheaper fix for cracked or damaged glass specifically, where the housing and motor are otherwise undamaged — worth checking if just the glass is available before assuming a full mirror assembly is needed.

More Electronics Hiding Inside Than Most People Realise

A wing mirror looks like a simple piece of glass and plastic from the outside, but on most modern cars it houses folding motors, heating elements, indicator lights, and sometimes blind-spot sensors — meaning a "faulty mirror" can mean several genuinely different things.

Before you buy: mirror specification varies significantly by trim — heated, power-folding, indicator-integrated and blind-spot-sensor versions are not interchangeable. Always confirm against your VIN before ordering.

Subaru Crosstrek Wing Mirror reference plate

Driver's Side or Passenger Side? Sorting Out the Terminology

Wing mirrors are sold by side, and UK retailers, workshops and part catalogues don't always use the same terms for the same side — so it's worth being clear before you order. In right-hand-drive UK cars:

Driver's side = right-hand (RH) = offside (OS) — the side closest to the centre of the road.
Passenger side = left-hand (LH) = nearside (NS) — the side closest to the kerb.

Part listings may use any of these terms interchangeably — "RH mirror," "offside mirror," and "driver's side mirror" all refer to the same physical part on a UK-spec Crosstrek. Double-check which convention your supplier is using before ordering, since a mix-up here is one of the most common reasons the wrong mirror turns up.

What It Does

Beyond the obvious job of rear visibility, modern wing mirrors on higher trims of the Crosstrek often integrate turn signal repeaters, puddle lights, heating elements to clear condensation, and power-fold motors for tight parking spaces. Higher-spec versions may also house blind-spot monitoring sensors, making them considerably more expensive to replace than a basic mirror.

Fitment & Compatibility

Mirror specification differs substantially by trim level on the Crosstrek — a basic manual mirror and a heated, power-folding, sensor-equipped version are not interchangeable even though they may look similar from a distance. Always confirm the exact specification fitted to your specific trim before ordering, ideally by referencing your VIN rather than assuming based on the visible features. Whether you're sourcing a replacement wing mirror for your Subaru Crosstrek from a dealer, specialist, or online marketplace, always check compatibility against your registration or VIN before buying, and confirm you're ordering the correct side — driver's side (RH in the UK) or passenger side (LH in the UK) — since these are not interchangeable.

A Genuinely Important UK-Specific Limitation Worth Knowing

This is genuinely worth knowing before assuming your mirror should power-fold: Japanese Domestic Market spec cars have an electric motor that folds the entire mirror housing in, but UK-spec cars genuinely don't fold via this motor at all, despite having what is physically the same mirror unit with the same folding components inside. UK buyers sourcing a replacement mirror are effectively paying for internal parts they can't use.

A genuinely useful, free reset trick worth trying before dismantling anything: if a mirror has gone "floppy," partially folding on its own while driving, try setting the fold switch to folded, then to unfolded, then pressing the button again. This has been documented resetting the internal mechanism in some cases without any disassembly at all.

It's also genuinely worth knowing that the auto-fold-on-lock feature doesn't work out of the box on UK-spec cars fitted with double-deadlocking central locking specifically — an additional relay is needed to acquire a re-open signal for this feature to function correctly.

Common Faults, DIY Difficulty & Aftermarket Advice

These are the same regardless of make or model — see our full Wing Mirror Guide for common faults to check for, how difficult this job is to DIY, and aftermarket advice — including the calibration risk on camera-equipped mirrors.

More Subaru Wing Mirror

The same part, covered across other Subaru models.