Festoon bulbs

A festoon (C5W) bulb is tubular with contacts at both ends — dome light, plate and boot lighting. Length matters (31, 36, 39 or 41 mm) — check the old bulb.

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Frequently asked questions

What is a Festoon (C5W) bulb and where is it used?
Festoon (C5W, SV8.5) is a tube bulb with a contact at each end. Used for interior, plate and boot lights. Comes in 31, 36, 39 and 41 mm — the length must match the holder.
How do I know which festoon length I need?
Measure the old bulb tip to tip across the metal caps (in mm), or the gap between the holder contacts. If you are between two sizes, take the shorter one — the spring contacts hold it fine.
Why does the car report a "bulb out" error after fitting LED?
LED draws a fraction of the current of a halogen bulb, so the CANBUS system assumes the bulb is missing. The fix is an error canceller (resistor/decoder) wired inline with the bulb — the warning disappears. For T10 and festoon a CANBUS version of the bulb is usually enough.
What warranty do the bulbs carry?
All LED and xenon bulbs come with a 12-month warranty. If a bulb fails within that time we replace it, no fuss. Halogen bulbs are consumables — the warranty covers manufacturing defects only.
How do I pay and how long does delivery take?
Payment is cash on delivery and courier delivery across Montenegro takes 24–48 h from order confirmation. Xenoni.me imports directly and keeps stock on hand — no waiting for a supplier.