Parking Sensors randomly going of
Hi all, I have a 2010 overland model grand cherokee, that came standard with front and back parking sensors. About 2 months ago, the front left sensors started playing up.
Intermitently they would go from nothing (ie one green led), to BEEEEEEP (ie all green and all red LED's). This is only happening on the front left. All the other sensors are working perfectly.
I could be moving, or stopped when they go of. It does not gradually go up.. it goes from nothing to full (and BEEEEEEP) instandly. sometimes it lasts a second, other times it lasts for over 10 seconds where i just disable it by pressing the button.
It "appears" to be much worst during wet weather. Although, when its wet, if I go outside, and completely try all the 3 sensors with a tissue.. It still goes of.. So i dont think its the water on the sensors making it trigger the problem.
As the car is under warranty, I have taken it to the Jeep dealer 3 times so far. First time, they said they cleaned the sensors.. at the dealer seemed fine.. 5 mins out of the dealers carpark, they play up again. 2nd time, they removed the bumper bar, cleaned and checked the connections and wiring. Again, in the carpark was fine, then few mins after, started playing up. 3rd time.. The delear took all the sensors of, checked them, found one faulty, also changed the control box (under rear seat).. in carpark was fine.. few min drive, they played up again.. STRANGELY after a few days (mostly dry weather, but a 1 or 2 light showers), the sensors behaved themselves for almost 1 week. Not one time did they go of.. Then it started raining heavily again.. and now.. they are agian going of randomly, even after its not raining, and sensore cleaned.
This is only happeneing on th left side. the right side, as well as the left and right rear scensore are working perfectly.
Also when its working, the distances work fine. So when parking, booth the front left and right would go from one led.. to 2.. then 3.. then 4.. al the way up to the 2 red ones.. they both work in sync.. as though the sensor are working perfectly.
Any ideas? its driving me nuts.. and i am sure the dealer as well.
Thanks in advance