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Old 21st May 2015, 09:41 AM
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The_Laird The_Laird is offline
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Default Parking sensor problem

Now, I've had parking sensors go before, and replaced the control box, but this is a bit odd.

When starting from cold, the front sensors beep continually (each beep lasting2 or 3 seconds or more) with short gaps between the longer beeps. Once the car is fully warmed up, they work normally.

There are no VCDS fault codes and the green light on the switch doesn't flash (IIRC, it does when one of the sensors is faulty).

Any ideas?
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2002 Final Edition S8. Ebony black with Silver Grey leather and myrtle wood trim.
Current mods: solar sun roof, 20mm rear spacers, 15 mm on front, red brembo callipers, 6k headlights, rear view camera, engine remap, alloy dash dial rings, alloy navi rings, tt/phaeton pedal upgrade, (and custom matching foot rest) dension ipod interface & parrot hands free kit (both fully hidden), av input, tv in motion switched thro' PF switch in blanking plug right of steering column, Audi 'quattro' sill covers, repositioned centre console switches, radio clock, .
Planned mods: auto-dimming rear view mirror, dash cam (as steamship's), fit the ski hatch, refit philips drl's (or maybe not - nope, definitely not - horrible botch!).
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Old 21st May 2015, 11:33 AM
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sounds to me like you may have some condensation (or dirt) occurring between the sensor and the paint layer or getting down the sides of the sensor(s) - so the detection is working but its trying to suggest you're about to hit something!
The only solution i guess would be to replace the sensor in question with a newly sprayed one or try to clean out what's there or take the sensor out and clean / respray it ?
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Old 21st May 2015, 01:52 PM
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But I don't know which sensor it is!

Not a job for before the meet if I have to take them all out - too busy with polishing, leather renovating, headlight lens cleaning and carpet shampooing!
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2002 Final Edition S8. Ebony black with Silver Grey leather and myrtle wood trim.
Current mods: solar sun roof, 20mm rear spacers, 15 mm on front, red brembo callipers, 6k headlights, rear view camera, engine remap, alloy dash dial rings, alloy navi rings, tt/phaeton pedal upgrade, (and custom matching foot rest) dension ipod interface & parrot hands free kit (both fully hidden), av input, tv in motion switched thro' PF switch in blanking plug right of steering column, Audi 'quattro' sill covers, repositioned centre console switches, radio clock, .
Planned mods: auto-dimming rear view mirror, dash cam (as steamship's), fit the ski hatch, refit philips drl's (or maybe not - nope, definitely not - horrible botch!).
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Old 21st May 2015, 02:07 PM
HPsauce HPsauce is offline
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Quote:
Originally Posted by The_Laird View Post
too busy with polishing, leather renovating, headlight lens cleaning and carpet shampooing!
I gave mine a quick wash and polish yesterday, but we've got a week in the rainy/muddy Lake District now, walking etc. so it will look like a refuse tip when I arrive in Wales directly from there!
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Old 21st May 2015, 08:20 PM
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Quote:
Originally Posted by The_Laird View Post
But I don't know which sensor it is!

Not a job for before the meet if I have to take them all out - too busy with polishing, leather renovating, headlight lens cleaning and carpet shampooing!
vagcom (or whatever variant you have) will tell you which one it is Jim
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Old 22nd May 2015, 07:22 AM
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The_Laird The_Laird is offline
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Read the first post! - there are no fault codes
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2002 Final Edition S8. Ebony black with Silver Grey leather and myrtle wood trim.
Current mods: solar sun roof, 20mm rear spacers, 15 mm on front, red brembo callipers, 6k headlights, rear view camera, engine remap, alloy dash dial rings, alloy navi rings, tt/phaeton pedal upgrade, (and custom matching foot rest) dension ipod interface & parrot hands free kit (both fully hidden), av input, tv in motion switched thro' PF switch in blanking plug right of steering column, Audi 'quattro' sill covers, repositioned centre console switches, radio clock, .
Planned mods: auto-dimming rear view mirror, dash cam (as steamship's), fit the ski hatch, refit philips drl's (or maybe not - nope, definitely not - horrible botch!).
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Old 22nd May 2015, 07:51 AM
ainarssems ainarssems is offline
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I think he meant to check measuring blocks with VCDS, it will show the readings from individual sensors, the odd one must be faulty.
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  #8  
Old 22nd May 2015, 10:44 AM
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OK, I can do a scan with VCDS and I've even managed to recode with it to allow the use of the radio clock.

But I have no idea how to check the measuring blocks!
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2002 Final Edition S8. Ebony black with Silver Grey leather and myrtle wood trim.
Current mods: solar sun roof, 20mm rear spacers, 15 mm on front, red brembo callipers, 6k headlights, rear view camera, engine remap, alloy dash dial rings, alloy navi rings, tt/phaeton pedal upgrade, (and custom matching foot rest) dension ipod interface & parrot hands free kit (both fully hidden), av input, tv in motion switched thro' PF switch in blanking plug right of steering column, Audi 'quattro' sill covers, repositioned centre console switches, radio clock, .
Planned mods: auto-dimming rear view mirror, dash cam (as steamship's), fit the ski hatch, refit philips drl's (or maybe not - nope, definitely not - horrible botch!).
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  #9  
Old 22nd May 2015, 09:11 PM
ainarssems ainarssems is offline
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Have a look here: http://forum.a8parts.co.uk/showthread.php?t=5000
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2006 A8 Sport 4.2TDI quattro SOLD,
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  #10  
Old 23rd May 2015, 07:57 AM
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The_Laird The_Laird is offline
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Thanks Ainars, much obliged

Just need to call David to get a hold of our shared VCDS.
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2002 Final Edition S8. Ebony black with Silver Grey leather and myrtle wood trim.
Current mods: solar sun roof, 20mm rear spacers, 15 mm on front, red brembo callipers, 6k headlights, rear view camera, engine remap, alloy dash dial rings, alloy navi rings, tt/phaeton pedal upgrade, (and custom matching foot rest) dension ipod interface & parrot hands free kit (both fully hidden), av input, tv in motion switched thro' PF switch in blanking plug right of steering column, Audi 'quattro' sill covers, repositioned centre console switches, radio clock, .
Planned mods: auto-dimming rear view mirror, dash cam (as steamship's), fit the ski hatch, refit philips drl's (or maybe not - nope, definitely not - horrible botch!).
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