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  1. #1
    Established Member Two Rings
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    Sep 15 2006
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    NC

    Brake Light flashing...

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    The last couple times Ive started up my car and driven away, my brake light just starts flashing. Someone tell me why this keeps happening. Thanks.

  2. #2
    Veteran Member Four Rings LAZY TURBO's Avatar
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    Jun 01 2005
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    La Crescenta, CA

    Re: Brake Light flashing...

    i think you need new brakes
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  3. #3
    Established Member Two Rings
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    Re: Brake Light flashing...

    Is this it? Anyone else had this happen?

  4. #4
    Veteran Member Four Rings
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    Dec 18 2006
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    03 A4 1.8t | 04 IB M3 SMG
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    Hanover, NH

    Re: Brake Light flashing...

    the brake as in the hand brake light?

  5. #5
    Registered Member Two Rings bimmerkilla1.8t's Avatar
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    Sep 17 2006
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    2003 audi a4 1.8t - 1969 bmw 2002
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    burbank

    Re: Brake Light flashing...

    ive had it happen. your brake fluid is low. either in the resoivor above the master cylinder or in the abs resoivor located behind the master cylinder. in the abs resoivor, you want the fluid level to be above the bottom of the screen to the point that it is about 1/4" above the bottom of the screen filter thing.

  6. #6
    Established Member Two Rings
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    Re: Brake Light flashing...

    Yeah its the e-brake light...It will flash for like the first minute I start my car and drive off.

  7. #7
    Registered Member Two Rings bimmerkilla1.8t's Avatar
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    Sep 17 2006
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    2003 audi a4 1.8t - 1969 bmw 2002
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    burbank

    Re: Brake Light flashing...

    yea its going to be the e-brake light that flashes. did you see that i answered your question? youre low on brake fluid probably in your abs resoivor!!!

  8. #8
    Established Member Two Rings mhemperly's Avatar
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    Oct 19 2006
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    Glendale

    Re: Brake Light flashing...

    FLUID, definatley, if that doesnt fix the problem, I know after I had my car lowered the ass holes forgot to tighten my driver side rear a-arm bolts and my wheel would move front to back, and it caused my brake light to flash during hard turns... but most likely it's your fluid

  9. #9
    Registered Member Two Rings
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    Dec 20 2005
    AZ Member #
    9309
    My Garage
    2003 audi a4 quattro, 2000 ford focus turbo
    Location
    San Antonio

    Re: Brake Light flashing...

    mine has also been doing this lately, flashing intermittently and beeping all the time. its annoying as hell. ill have to check the level...
    2003 A4 quattro, black/grey, 19in. ADR m-classic, tein c/o, ghl exhaust, carbonio V2, jl mids, subs and amps
    2000 Ford Focus turbo, 460hp crazy egg

  10. #10
    Registered Member Two Rings bimmerkilla1.8t's Avatar
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    Sep 17 2006
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    2003 audi a4 1.8t - 1969 bmw 2002
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    burbank

    Re: Brake Light flashing...

    lol, looks like ppl need to be doing better mainainence on thier cars. mine did it after i bled my brakes. the level in the master cyl was full cuz i had been adding as i went but i didnt even know about the abs res. i noticed the flashing light on the test drive around the block and it took only about 5 mins to solve the prob. if the light is flashing you should atleast try to figure out what is wrong right away especially if the light thats flashing says "BRAKE" and beeps. brakes are pretty important...

  11. #11
    Active Member Two Rings
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    Jan 24 2006
    AZ Member #
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    Location
    orlando

    Re: Brake Light flashing...

    this just happened to me when i got my car back from getting ss lines put on. the reservoir above the MC is full, but where is the abs reservoir that's located behind the master cylinder?

    i also read you need to check under the little yellow cap on the brake fluid reservoir, but it's full in my case. do you think the brake light flashing could be caused by an improper bleeding procedure? the brake pedal has farther travel than it used to have.

  12. #12
    Active Member One Ring
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    Colorado Springs

    Lightbulb Re: Brake Light flashing...

    Quote Originally Posted by bimmerkilla1.8t View Post
    lol, looks like ppl need to be doing better mainainence on thier cars. mine did it after i bled my brakes. the level in the master cyl was full cuz i had been adding as i went but i didnt even know about the abs res. i noticed the flashing light on the test drive around the block and it took only about 5 mins to solve the prob. if the light is flashing you should atleast try to figure out what is wrong right away especially if the light thats flashing says "BRAKE" and beeps. brakes are pretty important...
    Can somebody please give a more precise location for the ABS reservoir on an 2003 Audi A4 3.0 Quattro please. What would be the correct procedure for bleeding the entire system through with new fluid. I just changed the rear pads whilst keeping the master reservoir topped up and now have the annoying beeping and flashing BRAKE light on the display. Any assistance will be greatly appreciated.

  13. #13
    Senior Member Three Rings ridefastdietryi's Avatar
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    Jun 08 2009
    AZ Member #
    43481
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    04 A4 1.8t
    Location
    camarillo,ca

    Re: Brake Light flashing...

    LOL wtf my car does it now! random but even while im driving it will do it!!

  14. #14
    Veteran Member Four Rings Papachristou's Avatar
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    Sep 15 2006
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    04 Audi A4 USP,05 S4 Cabriolet
    Location
    Memphis, TN

    Re: Brake Light flashing...

    http://www.audizine.com/forum/search...archid=1590568

    lots of threads on it.. you are likely low on fluid. my car also does it when i corner very hard


    Quote Originally Posted by brynreynolds View Post
    Can somebody please give a more precise location for the ABS reservoir on an 2003 Audi A4 3.0 Quattro please. What would be the correct procedure for bleeding the entire system through with new fluid. I just changed the rear pads whilst keeping the master reservoir topped up and now have the annoying beeping and flashing BRAKE light on the display. Any assistance will be greatly appreciated.


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    2005 S4 Sprint Blue Cabriolet
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  15. #15
    Veteran Member Three Rings aalipio's Avatar
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    Sep 03 2008
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    05 S4 V8 02 A4 1.8T
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    N las vegas

    Re: Brake Light flashing...

    whats the *yellow* BRAKE LIGHT light on the lcd display? anyone have an idea? it came on when i started the car.
    Thanks

  16. #16
    Active Member One Ring
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    Colorado Springs

    Re: Brake Light flashing...

    Problem solved with ridiculously stupid ease and thank you to those that replied...

    I removed the brake reservoir cap and breather plug, removed the brake fluid filter insert (and have permanently now left this out, as only an idiot would remove the cap without cleaning it) and then played with the brake fluid 'float' which is presumably attached to a brake fluid level sensor. The float has a degree of play from side to side aswell as up and down and had stuck to the side of the channel it moves up and down in, therefore misrepresenting the fluid level.

    I would suggest this fault is also the cause of people getting the brake warning light come on when cornering with a degree of passion!

  17. #17
    Registered Member One Ring
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    Apr 01 2010
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    MASS

    Arrow

    My 1999 Audi A6 (quattro) is suffering from a flashing BRAKE light. I checked the main reservoir at the center of the engine bay, closest to the windshield. It was full. Is there another reservoir? Where is it located? Does it get filled with the same fluid?

    Thanks so much!

  18. #18
    Active Member One Ring
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    Quote Originally Posted by koskom View Post
    My 1999 Audi A6 (quattro) is suffering from a flashing BRAKE light. I checked the main reservoir at the center of the engine bay, closest to the windshield. It was full. Is there another reservoir? Where is it located? Does it get filled with the same fluid?

    Thanks so much!
    There is only one reservoir, but on most cars you need to remove the rubber seal and plastic cover along the entire back portion of your engine to be able to access the breather plug on the top front left of the reservoir (it is a yellow, flat plug opened using a flat blade screwdriver). I found that removing both the cap and the breather plug, then checking the correct operation of the 'float' resolved my problem; I hope your situation is similarly very easily resolved.

  19. #19
    Registered Member One Ring
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    Apr 01 2010
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    Wow, thanks for the quick response! I also noticed some new smells around the car, and I hoped it would be resolved if I could find a place to pour some more fluid... Sounds like maybe I'll need to have a professional take a look

  20. #20
    Senior Member Two Rings jdogg's Avatar
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    May 19 2009
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    Toronto

    Quote Originally Posted by koskom View Post
    My 1999 Audi A6 (quattro) is suffering from a flashing BRAKE light. I checked the main reservoir at the center of the engine bay, closest to the windshield. It was full. Is there another reservoir? Where is it located? Does it get filled with the same fluid?

    Thanks so much!
    Take the cap off the reservoir, and rub your finger around the screen. It sometimes just sits on top of screen, instead of seeping through. Giving the reservoir a full look. When actually its just pooled on the screen. Mine was lighting up and doing this. Just finger the screen.
    Last edited by jdogg; 04-01-2010 at 08:51 PM.

  21. #21
    Active Member Two Rings
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    Mar 01 2008
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    2008 A4 2.0T S-Line
    Location
    Hamburg, NY

    You have to love when someone actually takes the time to not help on a thread and goes out of their way to say "why didnt you think of this on your own".

    Thanks to all that posted with real solutions, I had changed my brake fluid 4 months ago and started to get the same problem, somehow I have lost a little level and needed to top it back off. Now I'm checking all my hoses and connections to make sure there are no leaks but this was a great starting point!!!

  22. #22
    Veteran Member Three Rings tatarin's Avatar
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    Feb 11 2008
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    My Garage
    05 B6 S4 Nogaro 6spd
    Location
    deerfield IL

    Had the same issue... i took the little screen out and fingered the level. light turned off!!!!!

  23. #23
    Veteran Member Three Rings zamflip's Avatar
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    Sep 21 2010
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    Smithfield, ri
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    damn old thread but i gotta ask you guys for the most idiot Q-- how to remove the little screen?? i just dont want to break it :-/

  24. #24
    Active Member Two Rings
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    Dec 14 2011
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    Mirabel, Quebec, Canada

    Quote Originally Posted by zamflip View Post
    damn old thread but i gotta ask you guys for the most idiot Q-- how to remove the little screen?? i just dont want to break it :-/
    Stupidness here too. Been struggling with that as well ...

  25. #25
    Established Member Two Rings Kodymfk's Avatar
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    Jun 07 2012
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    Black B6 A4 340hp on meth, Blue B6 A4 Tip (turd)
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    Lansing Michigan

    Gonna try this tomorrow lolz. I keeping getting a brake light symbol in my LCD randomly. It comes and goes as it wishes with no warning. Hopefully this is the case.

  26. #26
    Senior Member Four Rings customa4's Avatar
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    Apr 07 2011
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    02 A4 1.8T CVT, 02 A4 1.8TQ 5spd, 92 Geo Prizm
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    CT

    Had this issue with the B6 I just picked up so I added some DOT 4 and all better now.
    K&N-Milltek HFC-Magnaflow Catback-APR snub mount-ER Sport FMIC-Forge TIP-Forge DV-Podi-034 Motor Mounts-034 Rear Sway/End Links-STaSIS Street Sport Coils-Bentley Manual

  27. #27
    Veteran Member Three Rings MurkyRivers_A4's Avatar
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    Dec 17 2009
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    1991 Nissan 240SX KA24DE-T
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    Victorville, Ca

    Last two days I've been having the same damn thing. Still have the search results up on my phone with the same thread lol.


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  28. #28
    Senior Member Four Rings customa4's Avatar
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    Apr 07 2011
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    02 A4 1.8T CVT, 02 A4 1.8TQ 5spd, 92 Geo Prizm
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    Check the level. I cleaned up the reservoir and could see on the side that it looked low. I added the fluid, started it and brake light was gone.
    K&N-Milltek HFC-Magnaflow Catback-APR snub mount-ER Sport FMIC-Forge TIP-Forge DV-Podi-034 Motor Mounts-034 Rear Sway/End Links-STaSIS Street Sport Coils-Bentley Manual

  29. #29
    Veteran Member Four Rings diagnosticator's Avatar
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    Aug 26 2005
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    Seattle, WA

    If the fluid level is low in the brake MC reservoir, then the reason for the lost fluid needs to be determined. While simply refilling the reservoir is required, the cause of the low level needs to be evaluated. However, as the brake pads wear, the caliper pistons move outward, and that requires make up fluid from the reservoir. Regardless, brake pad wear should not result in the level of the brake fluid in the reservoir to drop below the minimum level line mark on the reservoir. With the reservoir topped up to the max level line with new brake pads, the level in the reservoir should remain above the minimum level line with the pads worn to the replacement thickness.
    Vorsprung durch Technik

  30. #30
    Established Member Two Rings
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    Nov 21 2011
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    UK

    i get the red light flashing accompanied by three beeps - its a bit disconcerting but everything seems to be in order. Someone advised that if the battery was not fully charged this would happen - the car was parked up for a week and when i started it this week it was continuously beeping with the big red brake symbol flashing away. Seemed to improve after the car warmed up and a bit of a drive. No error shows up on vcds though. I put it on charge today for a few hours and only got the beeps once, so will charge ot for longer tomorrow and see what happens. otherwise open to suggestions.

  31. #31
    Established Member Four Rings Knives1010's Avatar
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    Mar 17 2014
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    2006 Dodge Charger SE
    Location
    Olympia, Washington

    Has it been extremely cold there? Mine started doing this after temperatures got below 20(F) degrees. The plastic around my drivers side e-brake cable was cracked and allowed water to get in, and the water froze around the cable leaving it clamped
    Last edited by Knives1010; 12-18-2014 at 03:57 PM.
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