If someone could give me a link, or tell me, how to reset the exterior bulb light for my 04 coupe, that would be excellent. I've checked all the lights (even reverse lights!) and everything is working, but the light still remains.

Thanks in advance.

 

Try both license plate lights. If the dash light is on you have bulb out. You are not doing any LED conversions are you?

 

I haven't done any LED conversions, but it does look like the previous owner put LED in the license plate lights, which are working by the way.

There is a light or two out in the dash, but of course that shouldn't cause the exterior bulb light to come on.

 

What does an LED conversion have to do with it, though?

 

An LED requires a fraction of the amperage compared to a regular bulb. With very little draw, the BCM thinks that the bulb is not working.

James

 

Thank you! So how do I go about fixing that while still keeping the LED?

 

Was everything working fine then the dash light showed a bad bulb or has it always been on since you had the car?

If this is a new indication then you just have to find the bad bulb. If it has always been there you have to find what the previous owner did which might include using non-CAN buss LED lights.

 

It's been there since I got the car. I've been doing some research and just learned about can bus. So I'm guessing that is what's going on with the license plate lights. I'm going to see about replacing them back with halogens and see if the light goes off.

 

We have had reports that not all CAN buss LED lights are the same therefor some will work and other brands won't even though they say CAN buss compatible.

 

PS: See how giving us very detailed descriptions of the symptoms and history helps troubleshoot over the internet?

 

Well that's good to know. I haven't even looked at the bulbs to see what brand they are. Not that it would matter much. Thanks for your help!

 

Yes yes! I just joined this forum, the first I've ever joined, actually. So I'm still learning everything.

 

It's probably the led light. I have small led's in my diy running lights. If you want to test it, go get two normal license plate bulbs replace them then if the dash light goes off/back to normal, then take your choice...look cool with a reminder that your lights are on...LED's , or ride with the standard lights...still cool, but no reminder that your lights are on..

 

Hi! It sounds like the same problem I had a few months back. My exterior failure lamp came on, and I couldn't find a bad bulb ANYWHERE! One day I was in front of a diesel truck at a red light and I could see the rear of my car in his enormous front bumper. I saw that my brake lights were remaining on when I removed my foot from the pedal. Check and see if your brake lights remain on when the brake pedal is NOT pushed. (I dont know if it needs to be in gear or not) Anyway, I took my Baby Blue to the Chrysler dealership, and had to have a part replaced (sorry, I cant recall the part name), it was rather costly - $1,100, and took nearly a week to get. The service mgr said it was some kind of computer part for the lights?
Hope this helps!
June

 

Hello
I own a 2005 Crossfire my exterior light comes on as well and stays on all the time. Did you ever find out what caused your light to come on ?? My car has the rear tag lights are LED but I wouldnt think the exterior light stays on even when lights are turned off can you let me know if you ever found out about this. I just got this car last Oct and I am afraid if I try to register it and inspect it it will affect my states inspection.
thanks

 

As a diagnostic test put the original bulbs back in.

 

Are the LEDs just the bulbs or the complete LED tag light unit?
LED bulbs on their own need a resistor in the circuit otherwise the dash light will come on. The entire LED unit has the correction all ready made inside it.
Did you add the LEDs or did the car come with them?

 

Hi. My exterior light out indicator has come on but all the exterior lights seem to be functioning. I did change the two license plate bulbs with led bulbs a few years ago and have not had any problems until now. Is there a way to check the various exterior bulbs without removing and replacing them one at a time. Does the warning light automatically go out when a bad bulb is replaced or is there some sort of reset required? If I can’t determine which bulb is a problem would a simple voltage test with a multimeter at plugs or possibly at the various lighting fuses help to determine is there may be another problem other than the actual bulbs.
Any suggestions are appreciated.
Thanks
Jim

 

To test the bulbs, turn them on and look at them. The only one that might require more assistance are the braking lights. the ones that can be missed are the small bulbs inside of the headlights. be sure you look at the side markers and directionals.

 

Hi again. I found the reason for the exterior light problem.
The led bulbs I installed a few years ago in the licence plate lights, without problems until now, are both illuminating.
I decided to replace them with the original incandescent light bulbs and the exterior light warning went out.
I reinstalled the led bulbs and the exterior light warning came back on. Obviously a problem with the led bulbs even though they were illuminating and had been working without illuminating dash warning light.
I decided to try two new led bulbs the same type I originally installed. The new bulbs illuminated the same as the previous set of led bulbs but with no dash exterior light warning.
Must have been a problem with the original led bulbs after a few years use. Maybe the have a built in resistor or something that failed.