Continuous beep when reversing

ibesiano

ibesiano

Member
As soon as I put car into reverse I get ear splitting high pitch warning - continuous not beeping. It was intermittent but now happens every time. Sure it is linked to reversing beepers but no idea how to fix. NB reversing beepers now intermittent- ideas anyone
TIA
 
If your parking system is the original Audi unit, you can connect to it using VCDS. It has very good self-diagnostics that will tell you what's annoying it.
 
If you've got a duff sensor, you should be able to tell which it is. With the ignition on, put it in reverse and put your ear to each one in turn. You should hear a regular, fairly sharp clicking noise. If you get one (or more) that's silent or with an irregular or weak click, that's probably the culprit.
 
Proghound said:
If you've got a duff sensor, you should be able to tell which it is. With the ignition on, put it in reverse and put your ear to each one in turn. You should hear a regular, fairly sharp clicking noise. If you get one (or more) that's silent or with an irregular or weak click, that's probably the culprit.
Click to expand...
Visions of reversing over self 😂 Thanks
 
OK Identified dodgy sensor and replaced. Still plays warning continuous tone (intermittently) when in reverse, but not as loud. Presume therefore that this means bad connection somewhere in loom. Is it possible to isolate or tunrn off all or one of the sensors?
 
Sadly, the CCCU needs to be able to detect the presence of all 4 sensors and that they're all working properly.

If not, you'll get a long (a few seconds IIRC, but not continuous) warning tone when you select reverse. This is a different pitch and quieter than the continuous tone you'd get, if all the sensors were detected as working but one of them was giving a false positive for close proximity.

I've seen full-fat VCDS used to scan for error codes to indicate which sensor(s) report a fault. I'd imagine it can also show if any of them is giving a false positive. I don't know if VCDS Lite (licensed or not) is able to do that.
 
FinallyFiona said:
Sadly, the CCCU needs to be able to detect the presence of all 4 sensors and that they're all working properly.

If not, you'll get a long (a few seconds IIRC, but not continuous) warning tone when you select reverse. This is a different pitch and quieter than the continuous tone you'd get, if all the sensors were detected as working but one of them was giving a false positive for close proximity.

I've seen full-fat VCDS used to scan for error codes to indicate which sensor(s) report a fault. I'd imagine it can also show if any of them is giving a false positive. I don't know if VCDS Lite (licensed or not) is able to do that.
Click to expand...
Makes sense. I think I was getting the loud high pitched version and the lower pitch quieter now after replacing one sensor. I will try and put car into reverse and then wait a few seconds to see if it changes. Thanks
 
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