4 light bulbs out at once! Help me figure out what's going on.

Ok I got this



Which ones are LEDs?

If they are not can changing a halogen bulb fix the rest of the errors.
And if they are all leds, how do i change/fix a led light?
Might it be something in the electrical system that's not connected.

The turn indicator light works when locking/unlocking the car, but not when i want to signal a turn
The fog light seems to be halogen bulb and works as well.

The brake and reverse light I couldn't test because i was alone

You can test the reverse lights by turning the key to position 2 or all the way just before spring tension to start it, but don't start the engine. If your AC can turn on the. That's the mode. Put the car in reverse and the lights should come on. For push button start just push the start button two times with foot off the brake/clutch. The brakes you do need another helping hand. You don't have LED's in stock form on the E60 2004-2007 on the rear lighting. Everything is halogen. It's not the bulbs if all go at once though, that would be unlikely, possible but very unlikely. Did you get some unwanted water in the car somewhere?

thanks that will help

mine is end of 2007, most is led except 4 halogen bulbs.
So far i've identified that fog and reverse lights should be halogen, not sure about the others, prolly the brakes are halogen too.
The turn signals are led for sure.

I also doubt all those bulbs went out at once. Btw the errors not always come together, soemtimes they come and go away.
So prolly it's some connection, what should I look into?

I don't want to go to the local dealership for that, they are pigs.

All of those lamps are in one assembly with a single pseudo circuit board connecting all of them. Pseudo in that it has punched metal wiring assembled into a plastic harness. If all four bulbs are reading as out at once my guess is that there's an issue with the ground wire in the assembly. Would a blown fuse cause this error?

Today they all were fine by the way, no errors.
So that also adds to the theory that there is some connection that goes bad from time to time (temperature/vibration i guess)

Where i should look for that pseude circuit board or where i should change a fuse?

There's an old thread about the ground strap going bad(and that the grounding wire is too small). I would do a search on that. There are DIY instructions on fixing the grounding strap.

it's definitely something like that, when i hit it it goes alright for a while.


will search for that grounding strap then

thank you

uh i can't find it, at least not in the E60 forum

can someone tell me from experience what to look for when i remove the light block?

Originally Posted by Fking

can someone tell me from experience what to look for when i remove the light block?

This thread should help you... http://www.bimmerfest.com/forums/sho...ht+ground+rear

And another with DIY instructions... http://www.bimmerfest.com/forums/sho...6&postcount=22

To cut to the chase, this is what you are looking for:

http://forum.e46fanatics.com/showpos...59&postcount=5

you guys rock! thank you so much!