The answer depends on your trim: most 2012 TSX models with halogen headlights use H11 for the low beams and 9005 (HB3) for the high beams, while TSX models equipped with factory HID headlights use xenon bulbs with a D2S or D3S base. Check the bulb itself or the owner’s manual to confirm the exact base before purchasing.
Halogen headlights: what bulbs you need
Halogen-equipped 2012 TSX models follow the common Honda/Acura pairing of one bulb for the low beam and a separate bulb for the high beam. Identifying the correct pair is essential for proper fitment and brightness.
- Low beam: H11
- High beam: 9005 (HB3)
When replacing halogen bulbs, it’s best to replace both sides at the same time to maintain consistent brightness and color. Ensure you purchase bulbs designed for your vehicle’s specific housing and electrical system.
HID headlights: what bulbs you need
Some 2012 TSX models were equipped with factory HID headlights. Xenon bulbs are used in these systems, but the exact bulb base can be either D2S or D3S depending on the rolling stock and regional specifications. Confirming the current bulb type is important because HID bulbs require compatible ballasts and wiring.
- D2S bulbs (older HID systems)
- D3S bulbs (modern HID systems)
Replacing HID bulbs is more involved than halogen replacement, and many drivers opt to have the service performed by a professional to ensure proper ballast compatibility and alignment. Always handle HID bulbs with gloves to avoid oils on the glass, which can shorten bulb life.
How to verify your bulb type quickly
If you’re unsure which setup your car has, use these steps to confirm the correct bulb type before buying replacements.
- Open the hood and inspect the headlight area; look at the bulb base while the cover is removed (some housings have labels or diagrams on the rear of the assembly).
- Compare the bulb base to common types (H11 for halogen low beam, 9005 for halogen high beam, D2S/D3S for HID).
- Check the owner’s manual or the vehicle’s bulb chart for the exact specification by trim level.
- If in doubt, remove the current bulb and note the base stamping, or bring the part to an auto parts store or dealer for a cross-check by VIN or year/make/model.
Using the correct bulb type ensures proper fit, brightness, and electrical compatibility. If you’re replacing an HID bulb, consider professional installation to verify proper ballast operation and beam alignment.
Summary
For the 2012 Acura TSX, bulb requirements hinge on whether the car uses halogen or HID headlights. Halogen setups typically require H11 for low beams and 9005 for high beams. HID setups use xenon bulbs with a D2S or D3S base, depending on the specific unit. Always verify by checking the current bulb, the owner’s manual, or with a parts specialist to avoid purchasing the wrong bulb. Proper handling and, if needed, professional installation help ensure optimal visibility and safety on the road.
Do I need H11 or 9005?
H11 bulbs are designed for use as low beam headlights, while 9005 bulbs are typically used for high beams. This results in a higher brightness level for the 9005 bulbs compared to the H11 bulbs.
How much is a 2012 Acura TSX worth today?
A 2012 Acura TSX Sedan 4D has depreciated $2,456 or 25% in the last 3 years and has a current resale value of $7,250 and trade-in value of $6,350.
What years to avoid Acura TSX 2012?
We recommend staying away from 2004, 2005, 2006, 2009, 2010, and 2012 models. The biggest issue that appeared with these models was engine problems and transmission failure.
What kind of headlight bulb is in the 2012 Acura TSX?
Light Type : 9005(High Beam) + D2S (Low Beam)+H11(foglight).