Nope, my problem with the reverse sensing system is back. I was backing out of my parking lot today with NOTHING behind me and nothing to the sides and it started beeping REAL fast.

Looks like something I'll have the dealer take a look at.

 

Having exact same problems. Very random, not just after carwash. One day I put it in reverse when it was acting up consistently and set the E-brake, got out and figured out which sensor it was (neat how that thing beeps solid as soon as you get close to behind it with body heat) and rubbed it clean till it quite. I would think this thing should beable to take a considerable amount of dust being on a a bumper, don't know whats up.
Otherwise, this is one option I questioned when building my truck, they talked me into it and am very happy with it, don't think it will be long before its standard on all vehicles.
If you do get it fixed, post it if you get a chance.
Good luck

 

Same type of problem with mine. After a relatively minor snowfall, the sensor started sounding a steady tone last night and was doing the same this morning. Looked at the sensors, were visibly clean, but nonetheless wiped them with my fingers and tried again...the beeping stopped. However, after only a three mile drive to work on wet roads, started again.

This is an outstanding option, but these false alarms will quickly get to be very annoying. And I mean seriously, my truck is FAR from dirty, so if it's this bad now, what will it be like in a real rain or snow or after some serious driving?

 

I had my service department check this out also last time my truck was in for service. They initially told me that there is nothing that they can do unless they can actually witness this happening, hook up the tester and get a code. They just can go and replace the sensors because they won't get paid for the warranty repair. Well, that makes it almost impossible to get it there when it is actually happening, since it is sporatic. I initially thought it was the cold weather combined with wet/ice. Now I'm finding out that it is not cold weather, just wet. When I picked up my vehicle, the service director told me that they removed all of the sensors and "repacked" them. He didn't go into detail. He also showed me an inter-office e-mail stating an upcoming recall of the Freestar mini-van for this exact problem. They feel it happens in "wet" conditions and that we should see a recall or at least a TSB down the line for this issue. Hope this helps. Oh yeah, by the way, the "repack" didn't help. It still happens, sometmes, when wet.

 

Well that's really encouraging...luckily I live in New Jersey where it NEVER snows or rains...

Hard to believe they put a feature on vehicles like this that is so hyper-sensitive...

 

Not to mention when you take it off road.

 

Mine still does this from time to time, I did find which sensor was cause most of my problems, the passager side next to the tag.
It did it the last time I washed it, put the E brake on and I went looking for it, wiggled the connector on each one till I found it. The funny thing is, it has never do it when it has been raining, a couple of times on dry days, and one time after a wash.

 

This thread just saved me some money. I was thinking that the sensor would be a great option because the damn tailgate is about the size of a barn door now, but you've made me realize that living 2 1/2 miles in on a dirt road that's always either dusty or muddy would cause that sensor to drive me insane. Not to mention that we occassionally have a little snow here in northern Maine! "88" the rear sensor option.

 

Don't get me wrong...when working properly, with little/no visibility over the tailgate, this option makes alot of sense. But I've only had the truck 6 days now and it is already acting up after one minor snowfall when the truck is still almost "from the dealer" clean. 100 miles worth of everyday driving should not be enough dirt/grime to foul up the sensors. As I said, they actually looked perfectly clean to the naked eye, yet they were still give false indications.

P.S. Went out at lunchtime...was working fine again.

 

I've only experienced this once after brushing snow and ice off of the truck. I got out and checked the sensors and after finding no obstruction, got back in, put it in reverse again and it didn't beep (until it was supposed to). Believe me, my truck has been plenty dirty this winter and we've had considerable snow and rain but I've had no further false alarms. Personally, I couldn't drive this truck and park it where I need to without the reverse sensing system. As a matter of fact, I ignored the beeping once thinking it was a false alarm and backed into my wifes Explorer! In my defense, it wasn't parked where it usually is, it was nighttime and due to the slope of my driveway, the Explorer was completely obstructed by the tailgate. Fortunately, no damage was done to either vehicle but I've learned to respect the reverse sensor.

 

Even with a false alarm from time to time, I would recommend getting the option. They have saved me a few times.

 

My sensors seem to be working again. They've been working problem free for over a week now even after I got my car washed over the weekend. It's all over the place so it's hard to figure out what's causing it. Most likely dust on the sensors is my guess being that they sound very sensitive.

 

If you don't want the sensors going off, definatley don't put a leveling kit on your truck. Mine worked flawlessly even after a 15 mile dirt road. As soon as I put the level kit on, the sensor false alarms all the time, especialy on gravel. It's actualy easy to tell if it is false alarm or not cause the beeps will progresivley get closer together when there is something behind you and will normaly just make a bunch of beeps out of sequence when it is false. You are right about the tailgate and it is very hard to see anything down low when backing up. The sensor comes into play the most when you have to parrallel park. There is no way to see a honda accord behind you when backing down on your spot, but with the sensor, it will let you get within a foot of the vehicle. Also makes it nice for hooking up trailers. The benefits far exceed the anoyance to me anyway's. The best thing I did was to take the radio volume drop off the reverse sensing, that part drove me nuts.