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[Entwood]

My parking sensor system seems to have gone on the blink ... it used to, occasionally, give the constant tone "error" message first thing in the morning when the outside was wet with dew, or if it was wet with rain. I put it down to damp getting into one of the sensors.

Since the cold & snow it is now giving the error tone all the time, even when the sensors are bone dry externally.

I had a look today but could not work out how to remove the sensors at all, or even how to unplug them.

My thoughts were to unplug each sensor in turn to try and find which one ... assuming that a faulty one unplugged would not cause the error tone .. if that makes sense..

Anyone any ideas how these things fit, how to remove them, and how to test the system ??

Lastly, if I got sensors from a breaker would they work as individual replacements or are they "matched sets"  ??

The sensors are in an Irmscher rear bumper  .. if that makes any difference . but I don't think it should .... 

[feeutfo]

i had to remove my bumper as part of my lpg install. I unplugged the sensors from the top while the bumper was removed but supported on 2 beer crates so i could get my arm down the back of the bumper and unplug them without pulling the wires which are very short.

Your bumper may be slightly deeper reaching nearer the floor, so you may be able to reach your plugs from under the back of the bumper wihtout removing it? dont know. The plug itelf is a squeeze the tabs together from the sides and pull idea, bloody fiddly and packed full of road crap, i found they would not refit without some sort of lube on the rubber seal.

I found that any fault or open circuit on any of the sensors results in a continuous tone, i would think that would make diagnosis difficult. Cant help more than that i'm affraid. The sensors themselves attach from the back, another part will need painting.

[Lazydocker]

My aftermarket sensors have played up... The outer 2 are now permanently disconnected

[puffa]

I had a similar problem and it turned out to be a problem in with the spare wheel, just behind the light cluster on the nearside is a fuse holder sticking out of the loom, there is a spade fuse with a resistor in the top of it, this is to do with the parking sensor system, I changed this fuse and all worked fine. Upto the point of changing it I had the intermittent error tone and found by removing this fuse and putting it back in it appeared to reset it and get it working again.

Hope this helps

Steve

[Impact Pete]

Not helpful, but twice when I have towed and reverse parked my caravan, the constant tone has taken a few days to recover!

[davethediver]

My parking sensor system seems to have gone on the blink ... it used to, occasionally, give the constant tone "error" message first thing in the morning when the outside was wet with dew, or if it was wet with rain. I put it down to damp getting into one of the sensors.

Since the cold & snow it is now giving the error tone all the time, even when the sensors are bone dry externally.

I had a look today but could not work out how to remove the sensors at all, or even how to unplug them.

My thoughts were to unplug each sensor in turn to try and find which one ... assuming that a faulty one unplugged would not cause the error tone .. if that makes sense..

Anyone any ideas how these things fit, how to remove them, and how to test the system ??

Lastly, if I got sensors from a breaker would they work as individual replacements or are they "matched sets"  ??

The sensors are in an Irmscher rear bumper  .. if that makes any difference . but I don't think it should .... 

Sounds like your bumper is fubar'd need to give it to a new home quick entwood