The driver side headlight on my 2004 Acura TL is strobing and going off and on intermittently. My husband ordered a new bulb thinking it would be no problem to replace. He started to do it and discovered it might be out of his realm of knowledge. Short of driving 100 miles to the dealer can not find anyone here with the knowledge to replace the HID bulb. How hard can it be? Any suggestions on how to DIY?
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Re: Replacing HID headlight in 2004 Acura TL
HID Bulb Replacement
A transient high tension (25,000 V ) occurs at the bulb sockets of the high intensity discharge (HID) lamps when the combination light switch is turned ON, it may cause serious electrical shock or electrocution if you do not observe the cautions below.
Never turn on the combination light switch before fitting the HID bulbs to their bulb sockets and completing the reassembly of the headlight assembly.
Do not service the headlights assembly in wet conditions, such as rain or snow, near a sprinkler system, or when your hands are wet to prevent electrocution.
Do not touch the surface of the HID bulbs with your bare hands and do not stain it with any oils and fats.
Do not disassemble the inverter unit and the ignitor unit.
Do not turn on the HID bulb by using a power source other than the battery mounted on your vehicle.
Make sure you have the anti-theft codes for the radio and the navigation system, then write down the XM radio channel preset. Make sure the ignition switch is OFF.
Turn the combination light switch OFF.
Disconnect the battery negative cable, then disconnect the positive cable.
Remove the headlight assembly.
Remove the Torx bolt using a Torx T20 bit.
Turn the cover (A) 45 ° counterclockwise to remove it from the headlight assembly.
Turn the socket (A) 45 ° counterclockwise to remove it from the bulb (B).
Pull the retaining spring (C) away from the bulb then remove the bulb.
Make sure the bulb harness (D) is routed correctly so it does not contact the reflector (E).
Install the new bulb in the reverse order of removal. Make sure the notches in the bulb align with the tabs in the headlight.
After reconnecting the battery, enter the anti-theft codes for the radio and the navigation system, then enter the customer's XM radio channel presets.
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toyotarepairsemipro.blogspot.com/.../replacing-hid-ballast-or-computer.... May 1, 2010 - Replacing HID ballast or computer control lighting for the Headlight. Just got a ... Up until now, I did not know I had the option of seeing twice as far with Xenon. Also up to ... In the end after buttoning everything up, the light did work fine. .... Howdo you determine if you have a HID or non-HID light? Reply ...
TL take a D2S type HID bulb available online. If the ballast unit is bad you can find them on ebay a lot cheaper. It's located on the bottom of the headlight. I've even seen full headlight units with the bulb and ballast unit included for a couple hundred on ebay. That would be the easier way to go if you aren't handy with car work. To replace the bulb you need to pull the whole headlight out because Acura uses a security type bolt to secure the back cup onto the headlight. Once the headlight is off the car it's easy to remove the security bolt though with needle nose plyers
Mine done the same thing and mine was the ballast.I tried the bulbs first as you did and didnt work .I found the ballast and the igniter at a great price together on ebay and replaced both and they work great now!!
Without seeing the light's operation - I'd suspect a faulty ballast. Those are pretty expensive though - so I wouldn't just go replacing it. If you're handy with electrical, you could probably diagnose it 100% yourself - otherwise I'd recommend having your local trusty auto repair facility diagnose and repair it for you.