Seat Leon Wing Mirror: Specs, Fitment & Common Faults
On the Leon, a genuinely bizarre but confirmed free fix resolves mirror auto-fold failures — resetting the electric windows, despite no obvious connection between the two.
Illustration for editorial purposes
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OEM Part Number: 5F1857507M (LH) / 5F1857508M (RH)
| Passenger side (LH / nearside), complete mirror | Genuine Seat: 5F1857507M. Aftermarket: Johns 67 34 37-23 (electric, heated, power-folding, indicator, primed, 8-pin); Van Wezel 4946817 (folding, 8-pin); Van Wezel 4946805; Alkar 6141807 / 6143807 (folding) |
|---|---|
| Driver's side (RH / offside), complete mirror | Genuine Seat: 5F1857508M / 5F1857508Q9B9. Aftermarket: Van Wezel 4946818 (power-folding, 8-pin); Johns 67 34 38-21 (non-folding, 6-pin); Van Wezel 4946816 (memory, 12-pin); Van Wezel 4946806; Alkar 6142807 / 6144807 (folding) / 6146807 (memory) |
| Mirror glass only (aftermarket) | LH Johns 67 34 37-81 / Van Wezel 4946837 / Blic 6102-10-2002309P / Alkar 6433807 (convex, heated); RH Diederichs 7433226 / Blic 6102-10-2002310P / Abakus 3431G02 / Alkar 6434807 |
| Spec variants to match | S / SE: 6-pin heated indicator; SE Dynamic / FR: 8-pin power-folding; Xcellence / Cupra: 12-pin with memory; 2017 facelift carries the same housings. |
A Genuine, Bizarre-but-Confirmed Free Fix for Mirrors That Won't Auto-Fold — Seat Leon Wing Mirror
If your mirrors have stopped auto-folding via the key fob, but still fold correctly using the manual dial or switch inside the car, this genuinely rules out a mechanical or motor fault — and points instead to a software glitch that many owners have resolved with a specific, well-documented trick that has no obvious logical connection to mirrors at all: resetting the electric windows. The procedure reported to work consistently: lower each window (doesn't need to be fully down), hold the window switch in the "up" position for a second or two after the window finishes closing, release, then hold "up" again for a further few seconds — repeating this for each window individually. Multiple owners confirm this resolves the mirror auto-fold fault entirely, despite nobody having a clear explanation for why resetting window position affects mirror behaviour.
Seat Leon Wing Mirror: More Electronics Hiding Inside Than Most People Realise
The Seat Leon's wing mirrors bundle a surprising amount of hardware behind that glass — folding motors, heating elements, indicator lights, sometimes blind-spot sensors — meaning a single vague complaint like "the mirror's not working" could describe several distinct faults.
Seat Leon Wing Mirror: Watch: Replacing It
Filmed on a Mk3 Leon.
Seat Leon Wing Mirror: Driver's Side or Passenger Side? Sorting Out the Terminology
Side confusion is one of the most common ordering errors with Seat Leon wing mirrors, since UK sellers and catalogues don't always describe left and right the same way. Here's how it breaks down on a right-hand-drive UK car:
- 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 Leon. 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.
Seat Leon Wing Mirror: What It Does
Beyond the obvious job of rear visibility, modern wing mirrors on higher trims of the Leon 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.
Seat Leon Wing Mirror: Generations, Derivatives, Colour & Mirror Adjustment
| Mk3 (2012–2020), standard trims | Nevada White, Urban Silver, Midnight Black, Monsoon Grey; electric adjustment is standard on most trims from this generation, with heated glass increasingly common too — though the most basic specification may still be manual; confirm your exact trim |
|---|---|
| Mk3/Mk4 FR/Cupra | Desire Red is a premium metallic shade reserved for FR and above; electric adjustment and heated glass are standard on this trim |
| Cupra Leon (2020–present) | Graphene Grey is a Cupra-exclusive special paint alongside the standard palette; electric adjustment and heated glass are standard on this trim |
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Seat Leon Wing Mirror: 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, confirming the exact spec against your VIN, how difficult this job is to DIY, and aftermarket advice.
More Seat Wing Mirror
The same part, covered across other Seat models.