I have a 2004 Acura TL which has been in pretty good shape up until recently.
The left headlight started working on and off spontaneously. I also have noticed that the rear power door locks have been very “sluggish.” Meaning they sound like they are just not powerful enough to unlock the door and often take about 5 or more cycles of lock/unlock to finally work.
I took it to the Acura dealer to take a look at the headlight, and they ran the diagnostic kit and said it looked like I had a faulty headlight electrical setup. However, since this car has the HID headlights, this is no $0.50 bulb repair. They said the bulb, igniter, and ballast, and even the car battery were bad and needed to be replaced which came to a grand total of almost $1000. Ugh.
My question is did the faulty battery cause this? And could my USB cigarette lighter adapter for my phone charger cause a drain on my battery to wear it down? The charger doesn’t seem to use any electricity unless the phone is plugged in and the car running (a light comes on). Or anything else you can think of?
PS: the lesson I’ve learned for my next car is to get one with normal headlights and normal size rims. (the 17" tires are annoyingly expensive!)