I've been running the Maxlux bulbs in my 2008 for 14,000+ miles over the last 15 months and they are still working perfectly (installed when I put in a replacement ballast). I got Maxlux D4R Bulbs for both my 20 Prii since they're about half the cost and have different color options (use the buttons to select the color you want). The HID one has the flap for the high/low beam built-in, and the Halogen is riveted solidly in place. The 'flap' for the high/low beam on the HID is built into the cover for the light. 2006-2009 HID models: OEM Philips D4R bulb again 4300k is OEM color. The HID has a completely different housing The 1 difference is also in the housing.in fact much worse than my other car’s halogen high beams, coupled with the odd power on very bight then immediate dimming of the HIDs indicates that the bulbs are misaligned. These are sold as a pair vs the Philips that are sold indvidually. Discussion in Gen 2 Prius Main Forum started by Another, Nov 28, 2021. Another option at about half the cost are Maxlux D2R bulbs. 2004-2005 HID models: OEM Philips D2R Bulb 4300k is OEM color.Double check your owners manual to verify proper bulb type!.It's also important to note that the factory repair manual says you need to remove the front bumper and headlight assembly to replace these bulbs (this is where all the outragous labor charges come into play) - not necessary as shown here and on many other sites, references below! That was ultimately the fix for me but you will probably want to try this first.
![2008 prius headlight hid vs halogen 2008 prius headlight hid vs halogen](https://onlineparts.toyotasouthatlanta.com/images/parts/toyotaOEM/fullsize/a1_810771B.jpg)
I did some research and decided to give ballast (ECU) replacement a shot. Now I replaced my HID bulbs and not 5000 miles after installation the same one started doing the whole fade out thing where turning the lights on and off would bring it back on for a bit. This is really a simple job (actually the first job I did on my Prius), it doesn't take long and you'll save a ton of money doing this job yourself. For those who are out of warranty like me or have halogen bulbs read on. Now thats not 100 certain because it is possible to ADD fog lights to cars with Halogen. Base 4, 5, 6 PLUS all Touring models have HID and fog lights.
![2008 prius headlight hid vs halogen 2008 prius headlight hid vs halogen](https://1autoshop.com/images/F143849329.jpg)
If there are no fog lights, you have halogen headlights. If your Prius is still in warranty or even slightly out of warranty check into the HID headlight class action settlement, you may be able to get the replacement covered. For a 2008 model, the most obvious clue is if your car has fog lights, it has HID. For those of you who are having problems with your 2007 prius HID headlights I want to let you know that I was able to buy both bulbs online for 56 including tax at high performance bulbs and I had the bulbs installed by the guys that installed my car stereo for 70 not bad 126 when compared to Toyota dealer. I have the HID bulbs but I'll point out the halogen differences as the job is nearly the same. Here's a take on headlight bulb replacement.