Ian Newman Posted Friday at 10:51 AM Report Share Posted Friday at 10:51 AM Hi All, Been a member for a while but this is my first post. A6 2.0 TDI 2010 Le Man's. Just had ABS and ESP lights come on dash with complimentary headlight range and none functioning parking brake warnings too. Recently washed car and on moving it, found rear brake disc corroded pieces on the drive. Car drives fine but can anybody advise as to why I've now got these warning lights please. Quote Link to comment Share on other sites More sharing options...
Magnet Posted Friday at 12:17 PM Report Share Posted Friday at 12:17 PM Hello Ian, It is highly unlikely that the pieces of corrosion you have found are from the brake discs. Almost certain to have come from the brake backing plates - which can corrode quite quickly. ABS and ESP lights - Washing car? Bucket and sponge? Unlikely if the washing has dislodged pieces of corroded metal. Pressure washer? Sprayed with wheel cleaner first? The warnings you have could well be associated with one of the ABS sensors and/or the hub signalling. Kind regards, Gareth. Quote Link to comment Share on other sites More sharing options...
Stevey Y Posted Friday at 12:20 PM Report Share Posted Friday at 12:20 PM Hi if you get the car scanned for faults my bet is they are all low voltage faults which would most likely be a battery going out as this type of multi fault situation is normally caused by this as the ECU will shut down various functions that use a lot of power to preserve battery function voltage, if you have to get a new battery it will have to be coded to the BEM module, its worth spending the extra for a good branded battery and my suggestion would be Halfords, all in price for fitting and coding, make sure they code it ! , Steve. Quote Link to comment Share on other sites More sharing options...
Ian Newman Posted Friday at 05:19 PM Author Report Share Posted Friday at 05:19 PM Cheers Steve, keep you posted Ian Quote Link to comment Share on other sites More sharing options...
Ian Newman Posted Friday at 07:32 PM Author Report Share Posted Friday at 07:32 PM 7 hours ago, Magnet said: Hello Ian, It is highly unlikely that the pieces of corrosion you have found are from the brake discs. Almost certain to have come from the brake backing plates - which can corrode quite quickly. ABS and ESP lights - Washing car? Bucket and sponge? Unlikely if the washing has dislodged pieces of corroded metal. Pressure washer? Sprayed with wheel cleaner first? The warnings you have could well be associated with one of the ABS sensors and/or the hub signalling. Kind regards, Gareth. Hi Gareth, Thanks for the info. but the corroded steel was quite thick as per the outer corroded edge of a brake disc, also, I didn't use a pressure washer, just a hose. I'm guessing I'm going to have to get it plugged in for a diagnosis. Cheers Gareth Regards Ian Quote Link to comment Share on other sites More sharing options...
Magnet Posted yesterday at 07:55 AM Report Share Posted yesterday at 07:55 AM Thanks Ian, Sounds odd that a hose would have dislodged corrosion from the outer edge of a cast brake disc, but….. If it were mine, I would certainly be having a look at the pressed steel brake back plates. Kind regards, Gareth. Quote Link to comment Share on other sites More sharing options...
Ian Newman Posted yesterday at 05:26 PM Author Report Share Posted yesterday at 05:26 PM 9 hours ago, Magnet said: Thanks Ian, Sounds odd that a hose would have dislodged corrosion from the outer edge of a cast brake disc, but….. If it were mine, I would certainly be having a look at the pressed steel brake back plates. Kind regards, Gareth. Hi Gareth, Yep, I'll check first off but still not sure why I've got all this on the dash because of. Currently on holiday, not in the A6 of course, timing was to perfection if you know what I mean Ian Quote Link to comment Share on other sites More sharing options...
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