Parts for your 2004 Toyota Mark x-Headlight bulbs

2004 Toyota Mark X headlight bulbs

Based on Toyota technical references, headlight bulbs are absolutely relevant to the 2004 Toyota Mark X. The Toyota Electronic Parts Catalogue (for GRX120/GRX121, 2004 build) and the factory service/owner information specify replaceable headlight light sources: many grades were factory-fitted with HID (discharge) low beams using a D2S bulb, while other grades used halogen H11 low beams. All variants used a separate halogen high beam, typically HB3 (9005). This means the 2004 Mark X does use headlight bulbs and they’re a normal service item.

On this model, the headlight bulbs do the heavy lifting for safe night driving and poor-weather visibility. Whether it’s the crisp punch of the HID projector or a solid halogen beam, the bulbs are designed to deliver a clean, correctly shaped pattern for right-hand-drive roads. Keeping them in top nick helps the car pass WOF/rego checks and keeps glare out of oncoming traffic.

For routine servicing, it’s smart to replace bulbs in pairs so the beam colour and brightness match. Signs it’s time include a pink/blue tinge or slow start-up on HID, or a dim, yellowed output on halogen. Always match like-for-like: D2S HID is not interchangeable with D4S, and H11 halogen shouldn’t be swapped for higher wattage units that can cook the housing. Genuine or quality-equivalent parts are worth it for longevity and beam focus.

• Common 2004 Mark X bulb types (confirm by VIN and headlamp label):
  • Low beam: D2S HID (Toyota p/n often 90981-20008) or H11 12V 55W halogen
  • High beam: HB3 (9005) 12V 60W
  • Position/park: T10 (W5W)
  • Front fog (if fitted): H11 or HB4, depending on bumper/grade
  • Front indicator: PY21W amber

HID safety matters: there’s high voltage at the ballast. Switch the lights off, let the unit discharge, and disconnect the battery before touching anything. Don’t handle glass with bare fingers, use gloves, and refit dust caps to keep moisture out. After any bulb change, check the aim on a flat surface and ensure the beam cut-off is tidy. If the car has AFS (adaptive front-lighting), confirm the swivel and levelling perform correctly after refitting.

Good habits go a long way: keep lenses clean, sort out any condensation early, inspect connectors for heat discolouration, and check headlight fuses and earths if output seems weak. For Aussie and Kiwi conditions, that little bit of care keeps night drives relaxed and the Mark X compliant and sharp-looking.

FAQs

Which headlight bulbs fit a 2004 Toyota Mark X?
Most 2004 Mark X grades use a D2S HID bulb for the low beam in a projector and an HB3 (9005) halogen for the high beam. Some lower-spec lamps use an H11 halogen for the low beam. Park/position bulbs are T10 (W5W), and fogs are usually H11 or HB4. Always check the sticker on the headlamp housing or confirm by VIN.

How can someone tell if their Mark X has factory HID?
Factory HID cars have a projector low beam with a ballast box mounted under or behind the headlamp, and the light typically “flares” to full brightness a second after switch-on. The headlamp lens or housing label will reference “D2S” on HID units. Halogen housings usually state “H11” and lack a ballast.

Is it legal to put LED bulbs in the Mark X headlights in Australia or New Zealand?
Generally, swapping LED bulbs into halogen or HID housings isn’t road-legal unless the complete lamp assembly is approved for that light source. Aussie ADRs and NZ WOF rules expect compliant beam patterns and correct equipment. If upgrading, use approved complete lamp units or like-for-like bulbs, and check local regulations.