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Unplug it and learn how to park it yourself."
Got an aid, why not have it working?
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Firstly go here ...Introduce Yourself - Land Rover Zone and say Hi! "
Don't bother, I never did.
LOL.......
Listening for clicking of the sensors is not a fool-proof method.
The reversing sensors on my wife's 2006 TD4 slowly got worse starting with an occasional bleep until a few months later when they would just keep sounding continuously when reverse was selected unless they were turned off. Despite this, they were all clicking merrily away when active.
I checked the connections & wiring harness to the control module (behind the rear panel in the boot) but that made no difference so decided that I would replace the sensors first and then if that failed, the module.
Removing the rear bumper is actually very easy however it is very likely that a couple of the steel screws that hold the mud-flaps in place (the ones directly behind the wheels) will be seized but 2-minutes with the Demel had a slot cut in each one and then using a right-angle flat screwdriver they came out without further problems.
I purchased a couple of eBay £10 specials (one of each type of sensor as there are two, inner & outer), the reasoning for buying only a pair was if the fault was still there I would swop them to the other side and re-fit the old ones. If even this didn't cure the problem then I knew it had to be the module.
As it turned out it fixed it first time and the sensors worked perfectly, 15-minutes later it was all back together and they have been working fine ever since.