Parking Sensors
07-03-10, 10:27 PM
#1
Driver
Thread Starter
Parking Sensors
Guys,
When i picked up my car the dealer promised to paint a ding in the back.
I just noticed the rear parking sensor is now jammed on and i also noticed the ring around the sensor has dissapeared.
Does this mean the sensor has been disactivated? There are 2 parts the inner circle and the outer ring. What function does each have?
When i picked up my car the dealer promised to paint a ding in the back.
I just noticed the rear parking sensor is now jammed on and i also noticed the ring around the sensor has dissapeared.
Does this mean the sensor has been disactivated? There are 2 parts the inner circle and the outer ring. What function does each have?
07-04-10, 07:03 AM
#3
Sorry guys, there is not a separate outer ring; the ring is part of the sensor.
That said, I have learned through experience:
Cracked or missing outer rings do not necessarily mean sensor failure: I have a couple of chipped ones that are working fine;
CelsiorAUS: your disappearing outer ring may mean the shop tried to pry the sensor out. Those rings are brittle, and prying will easily break them. And they can't be pried out; must remove from the back side. But: if your system is still functioning (no alarms codes on the display telling you otherwise, then the shop got lucky and didn't kill your sensor.
Both you guys could consider making outer rings to match and figuring a way to attach them to get your appearance back to normal.
Cost: I don't know, but it's a lot. I have scored 2 good ones from eBay over the years, neither was my exact color, but close enough I don't notice on my Flint Mica car.
Some say you can paint these to match; others say you will fail; apparently the center disc is part of the ultrasonic vibrating assembly, and paint must be just right for it to function.
That said, I have learned through experience:
Cracked or missing outer rings do not necessarily mean sensor failure: I have a couple of chipped ones that are working fine;
CelsiorAUS: your disappearing outer ring may mean the shop tried to pry the sensor out. Those rings are brittle, and prying will easily break them. And they can't be pried out; must remove from the back side. But: if your system is still functioning (no alarms codes on the display telling you otherwise, then the shop got lucky and didn't kill your sensor.
Both you guys could consider making outer rings to match and figuring a way to attach them to get your appearance back to normal.
Cost: I don't know, but it's a lot. I have scored 2 good ones from eBay over the years, neither was my exact color, but close enough I don't notice on my Flint Mica car.
Some say you can paint these to match; others say you will fail; apparently the center disc is part of the ultrasonic vibrating assembly, and paint must be just right for it to function.
07-06-10, 11:47 PM
#7
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It could be that the layer of paint is too thick. I had the same constant beeping once this past winter and got out to find a piece of ice had frozen to the sensor.
If it's constantly beeping then it could be working correctly just constantly detecting something like the paint or in my case the ice.
I think a malfunction would give you a dash message
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07-07-10, 03:46 AM
#8
My experience with these things began with a sensor that was always on. No error message, just front center zone beeping constantly when in drive.
The bad sensor turned out to be the perfect looking one; perfect factory paint. Also, it checked out a correct resistance (10 ohms, I believe). The other one in front center zone, the one with cracked outer ring with chunk missing, was/is working fine.
The bad sensor turned out to be the perfect looking one; perfect factory paint. Also, it checked out a correct resistance (10 ohms, I believe). The other one in front center zone, the one with cracked outer ring with chunk missing, was/is working fine.
07-07-10, 01:42 PM
#9
That's exactly what I have! - Front center zone always on. Is there a way to just pull the plug on the bad sensor behind the bumper?
Walt
07-07-10, 03:38 PM
#10
Wish it were so easy.
My Toyo dealer ran a diagnostic; it couldn't identify the problem.
With the help of the wiring diagram, I tested resistance of all sensors by probing the wiring harness at the plug leading to the front bumper; I think the plug was behind a black shield just inboard of the DS headlight, above the bumper and behind the grill.
But, all sensors had the correct resistance. So at that point the bumper had to come off.
I learned: there must be a good sensor at every position, or the whole house of cards collapses.
Ultimately, I bided my time, scoring 2 dark colored sensors of eBay; then I took the bumper back off. Substituting sensors finally solved the issue.
Far more work than it ought to be.
1 more thing: I think you can disable the front sensors altogether via programming by a dealer. That way, you can use just your rear sensors for the time being. I bet some people decide they can do without the fronts anyway.
My Toyo dealer ran a diagnostic; it couldn't identify the problem.
With the help of the wiring diagram, I tested resistance of all sensors by probing the wiring harness at the plug leading to the front bumper; I think the plug was behind a black shield just inboard of the DS headlight, above the bumper and behind the grill.
But, all sensors had the correct resistance. So at that point the bumper had to come off.
I learned: there must be a good sensor at every position, or the whole house of cards collapses.
Ultimately, I bided my time, scoring 2 dark colored sensors of eBay; then I took the bumper back off. Substituting sensors finally solved the issue.
Far more work than it ought to be.
1 more thing: I think you can disable the front sensors altogether via programming by a dealer. That way, you can use just your rear sensors for the time being. I bet some people decide they can do without the fronts anyway.
07-07-10, 04:12 PM
#11
08-05-10, 09:34 PM
#12
MotionMan
08-07-10, 07:14 AM
#13
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Yah Im worried about my sensors a lil to cause im repainting my bumpers and it sounds like it can be a issue so everyone wish me luck . I havelike two sensors that are chipped and i just want that super clean look .
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