Hazard lights going off for no reason??

[chrissoto312]

Hey guys,

I was just driving in to work and my hazard lights were going off for no reason. The button was not pressed nor blinking like it was, but the lights were flashing on and off. The green signal indicators were not going off either. The only way i knew was seeing the reflection in the car in front of me.

After pressing and pressing the hazard button they finally stopped.

WTH was going on?? I finally got to work and the button works seamlessly now.

I took out the assembly and i dont see any frayed wires or anything like that.

**Puzzled**

[tmv]

Happened to my daughter's X5 a couple times, and I still have no clue.

[chrissoto312]

LOL, ok, well good to know I'm not crazy, nor my car is.

This is only the first time I've seen it do this. Hopefully the last......

[Qsilver7]

If you've unlocked your OBC...the next time you go out to the car AND before you start up the engine...turn the ignition to position 1 and do OBC TEST 9. Or if you have a multi-meter...check your X5's battery voltage.

Check to see if your battery's voltage is below 12 volts. As mentioned many times...low voltage will cause odd/strange electrical gremlins. If you do TEST 9 after you've started the engine and your alternator is working properly, it will have put enough surface charge on the battery that when checked, the battery's voltage will be 12 volts or higher.

If this happens, then you need to remove this surface charge, then check the battery. You can see several ways to remove the surface charge in the info below:

BTW...really consider updating your signature and add your X5's model/model year/build date...because it helps us to help you better. We have no idea how old your vehicle is or what engine or transmission it has. When you ask questions or post information...others can benefit from knowing if what you did applies to them, and it also helps those that are trying to answer questions you ask by indicating which side of changes in the production range you fall on, and again...as to which of the multiple engines, transmissions, AWD system, lights, etc you have.

[Naz24]

The cars hazards go on automatically after an accident I believe. Maybe you tripped the system somehow?

[TerminatorX5]

The lights in the car are controlled by the LCM, each exterior light is controlled individually, even the license plate lights wired individually... The LCM activates the lights based on the status of the corresponding switch, and also based on the iBus telegram that it can receive from the iBus - if you have proper setup, you can turn on/off each light on your car separetely - when the battery is dying, it gives off "fluids" and the system modules are being turned on/off and they generate codes/telegrams, that sometimes make no sense (and nothing happens) but sometimes do make sense, and then you have windows rolling down on their own, wipers going off... my speedometer cluster somehow went into euro mode, and when i started the engine one day, I saw that I had like 200K miles on it instead of 120-130 K miles!!! I thought I'd have a heart attack... turned out, it was the 200K kilometers... I never was able to repeat it at will after that... lol...

Check your battery.

[Elvis 3.0]

not sure of the proper name, but if you have already checked the battery, fuses, volt read out and are still at a loss it is possible it may be something rather simple.

the buttons for the hazard lights and central locking the are located in the console are seated in a housing. that housing sometimes cracks, or debris can get encumbered between the switch/button and the housing causing unwanted results, such as your central locking button becoming inoperable or your hazards coming on/off.

one way to do this would be to utilize a non marring pry tool at the gear housing at the 6 o'clock position, pop that up, and then curl your hand back to the button housing and push it up to check. instructions in bentley manual.

[Elvis 3.0]

just checking in ... you may help someone else with your solution.

thanks

[Qsilver7]

Originally Posted by Elvis 3.0

...utilize a non marring pry tool at the gear housing at the 6 o'clock position, pop that up, and then curl your hand back to the button housing and push it up to check... .

Just for my own clarification (being an e53 owner for only 2 months) ...when you say "gear housing" are you referring to the boot aka "skirt" around the gear shift lever (#3 in the diagram below)?

[caisson12]

my hazard lights were going off for no reason, interior lights stayed on after locking car, interior lights would come on by themselves with flashers while driving. New battery fixed all! The LCM does strange things with an old battery..........

Cheers...