Questions regarding Towing bar for C5

[atr]

Hi all!
I want to install a towing bar on my 2007 (mkii) C5 (petrol) and I'm bothered by two questions. first, is it mandatory to install what I was told "clever electrical system". I was asking a few qualified installers (here in Israel you are not allowed to buy a kit and install it yourself - one must have it installed by a certified installer). and was answered by some that it must include a "clever system" while other told me the opposite - that it is not required. so, what is the correct answer?
second question, as well aware, the vehicle is equipped with a proximity sensor that beeps when you are too close to any object, so when the trailer is hooked up to the vehicle, wouldn't it beep constantly. if indeed that the case, how can it be corrected?
Thanks.

[xantia_v6]

Have you read this topic? http://www.frenchcarforum.co.uk/forum/v ... =3&t=40871
It is regarding the C5 X7, but I beleive that the situation is similar for your car.

[wheeler]

the proximity sensors should only be active when reverse is engaged so it shouldn't beep all the time. If you get the original (very expensive) dealer towing electrics it disables the reversing sensors when a trailer is attached.

[Stickyfinger]

The Bar I fitted (Witter) was a bolt on tow ball type.
The sensors beeb with the ball attached, but unbolted and removed they do not.

I just leave it off with the wires/socket panel cable tied up under the bumper in the dry.

[GiveMeABreak]

Hi Avi - Just have a read of Vaborovic's posts in the thread http://www.frenchcarforum.co.uk/forum/v ... =3&t=40871 as Xantia V6 says. It's not just the Parking sensors that are deactivated - but once a proper wiring kit is used, the ABS / ESP / ASR system is aware you are towing and uses a different set of laws to ensure the vehicle safety systems compensate for this.