Hi my Rear parking sensors have just packed up was working fine, now just get one tone that stops after about 10 sec when put in reverse, my electrochromic interior rear veiw mirrors gone also think this is linked, need help?
steve

 

Just checking if anybody else has had the same problem and what could be the fix, dont want to go to the main dealer...

Hi my Rear parking sensors have just packed up was working fine, now just get one tone that stops after about 10 sec when put in reverse, my electrochromic interior rear veiw mirrors gone also think this is linked, need help?
steve

 

I would check that the sensors are making noise. Get someone in the car with the brakes on and put it in reverse. Have a second person put their ear to each sensor on the rear bumper. They should be emitting a high pitch squeal that you will hear if close. If any of them are not they are bad or they have come unhooked. If none of them are making noise I would plug and unplug the parking sensor module which is in the trunk spare wheel well. If that does nothing you may have a bad module. There are several modules in the trunk area. You should get the JTIS off of EBay for about $10. This is really necessary. The JTIS has a nice diagram of where all the modules in the car are located.

I would do this before taking it in. Unless you have a warranty and then just let the mechanic fix it.
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Thanks for your reply, will check this out i do have a warranty but does not cover this! and i must get a JTIS, just miss haveing them working.
Regards Steve

 

Brought the JTIS from ebay bit dissopionted, info on parking aid states that if you get a solid 3 second tone in reverse then there is a parking aid fault, but no mention of how to find whitch parts gone or how to fix, I allready new all this.
Steve

 

Did you do what I told you to do??

Please report back with the results. You should be able to rule out the sensors pretty quickly. Also look under the electrical guide in the JTIS which is different from the service guide. Both are on the same disc. They have the circuit diagrams so you can trace the wires.
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IF you live in an area that has salt or grime on the roads, take a clean cloth and clean them off. I had ONE that got salted up, and the car insisted there was something behind me that I was about to hit, whenever the car went into reverse.
They are radar / sonar sensors and like mentioned above, you can check their operation via putting your ear next to them while someone holds the brake with the car in reverse.

Take care,

George

 

Thanks George for pointing that out!

Good idea to clean the sensors of any dirt/debris. I have attached the wiring diagram for this system and a picture of where the module for it is. This is not a complicated system and really it's usually a sensor or wire to a sensor problem.
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Along with dirt and grime, substantial rainstorms and even heavy fog can also false-alarm these back-up sensors. I've noticed that a couple of times with our particular car....

 

Thanks for the advice, but when you say: Did you do what I told you to do?? this is the first Information from you, I will check it out, and do miss this system, so if one sensor does not work will this stop the whole system.
Regards Steve

 

club posts as tbird6 as well - helps to confuse you

 

Hope this sort's it, ordered a new park aid module today from my local Jag Dealer, £75 plus VAT can't wait to pick it up and try.
Regards Steve

 

So you had no noise at any of the sensors? Hope that is the fix.
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I did ask days ago that if one sensor was not working would this stop the whole system and got no reply, yes checked this all make a clicking sound accept one that is dead.
Regards Steve

 

Your best bet is/was to read previous replies on the same subject which go into quite a lot of detail. Also, not to write very long hard to grasp single sentences with little information.

 

I am still very new to this site but find it very hard to find any information, was just asking if one sensor does not work does this knock the whole system out?
Regards Steve

 

I don't recall, but I'd expect it to, as it could not give proper indications. A fault's a fault.

 

bens:
In in the first post I made I suggested checking for noise at all the park sensors. You found one not making a sound?? Why replace the most expensive piece in the whole system first? Is the dead sensor even hooked up? Can you swap the other sensors around and make sure it is the sensor?? Wiring could still be at fault and would be a cheap fix.

I would do more trouble shooting before spending money on a module that probably won't fix your issue since the other sensors were making noise. This shows the module is at least working part way?
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Thank for the advice, just seemed like the quick fix was the parking module, the sensors & wireing seems harder to get to, like removing the bumper cover and spraying a new sensor to match the car.
Regards Steve

 

Yes you are right on that. It's hard to get the plug off the sensor. No room to work.
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