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#1
18th January 2013, 06:14 PM
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Red brake alarm
tonight on the way home the red brake light in the DIS came on with the 3 beeps it kept clearing then coming back,as I was almost home I kept on driving as the brakes still worked well and the ABS light didn't come on.
At home I plugged in the pc and ran a check of all the ecu's ,but nothing showed apart from the usual brake light implausible signal. The handbook says to check the brake fluid level ,but this was also at max. Has anyone heard of the sensor in the brake fluid cap failing and giving intermittent readings ? I am suspecting this sensor attaches directly to the DIS and no real intelligence is used to report a low fluid level. 
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#3
18th January 2013, 07:34 PM
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Or broken / shorting wiring being affected by the snow causing an intermittent alarm?
__________________
Confidence is the feeling you have before you know better . . . .  Audi A8 D2 3.7 Quattro Sport 1999 FL - Melange 2nd Place Winner - A8-Freunde Annual German Meet 2012 at Edersee 20" x 9" Bentley GTC Wheels with 385mm W12 Front Discs & Bentley Caliper Covers, Front Lowered on Coilovers, Xenons, Combined DRLs and LED Foglights to modified OEM front fog lamp position, Alcantara/Leather, Full Black Alcantara headlining + pillars and blind shelf, Bespoke Flat Bottomed Sports Steering Wheel, Dark Myrtle Wood, Autodim Mirrors, Bose, Blinds, Digital TV, Ski Hatch, Modified rear exhaust section for extra V8 Burble  Audi S8 D2 Final Edition 2002, Avus Silver with Red Leather Interior Tiptronic with Sport mode button, Sony rear entertainment package, Bose sound system, Audi Navigation Plus, 20 inch Final Edition alloys, Full Cat Back Stainless Milltek exhaust, giving a great V8 burble Audi A8L D2 4.2 Petrol with LPG - Ebony Black Audi A8L D4 FL 4.0T Petrol twin turbo - Havana Black Audi A2 1.6 FSi Sport - Dolphin Grey with Votex body kit and Red Leather Interior and some other A8's A8L's and Mercs
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#4
18th January 2013, 08:37 PM
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Don't think its pads ,the pad alarm is a yellow one a circle with what appears to be dotted pads to each side, I did have a quick look at the pads and they appear to have lots of meat left.
It was too cold to play with the brake fluid sensor wire tonight ,I will have a play with a multimeter in the morning ( as long as it don't snow ) I will let you know how I get on 
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#5
18th January 2013, 09:09 PM
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Were the bars at the sides of the exclamation mark solid or broken?
Broken lines is brake wear, solid is a brake system problem... Not seen a failure in the fluid level sensor myself before, but not impossible.
__________________
2010 Jag XF 3.0D Portfolio S I know.. I know.. 
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#6
19th January 2013, 12:02 PM
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Could it be the handbrake switch playing up, so it thinks you have the handbrake on?
__________________
Manny 2004 A4 1.8T Sport Cabriolet, 89K Miles Past 2004 D3 A8 3.7 Quattro, Xenon, Bose, Blinds, Solar Sunroof, TV, ACC, phone and almost every option. 168K miles rising slowly with retrofit AMI and DVB-T in place of Analogue 2003 Volvo S60 D5 SE Manual, 197K miles. 2001 D2 A8 3.7 QS, Bi-Xenon, Bose, Blinds, Electric Everything, retrofitted RNS-D, 191K Miles
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#7
19th January 2013, 10:02 PM
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Quote:
I went out this morning and had a look ,the level was right at max in the bottle ,but the connector looked a little strange,so i removed it ,gave it a clean and replaced then went for a small drive. So far the alarm hasn't came back ,may have just been a little oxidation in the connector ,I will be keeping a big eye on it but so far so good. Real weird
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