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Parking Sensors (front & Rear)


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95 replies to this topic

#41 shmern

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Posted 07 June 2007 - 12:12 PM

Do you want the parking sensor control box fitted under the passenger seat - I have one that i'll probably never use. bought it from Fraud at a cost of over 100 quid if i remember rightly. My problem turned out to be a plug not quite on properly due to a stretched wiring loom on one of the front sensors.
Make me an offer if this is what you want, I'm sure prices will vary depending on where you get it from.


Thanks for the offer RichyRich, however it is just one of the sensors on the rear bumper which is faulty. Think I'll have to bite the bullet and head to Ford :huh:

D.

#42 DMJ

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Posted 17 June 2007 - 02:32 PM

Hey people, i'm having problems with the parking sensors on my 02 115 TDi Galaxy Zetec.

When put into reverse or the button on the dash is pushed to turn on the parking sensors the system just emits a steady tone. some times it will stop and beap normally but not for long (couple of seconds if that).

I've checked all the sensors and they all tick when I stick my head next to them so I think they are all working. I also gave them all a wipe over just to make sure it wasn't dirt on the sensors etc. Whilst I was doing this I found that the passenger side sensor on the front (above the fog light) was very loose, to the point that it disappeared into the bumper. D'oh

I've stuck my hand up behind the bumper and found the sensor hanging down and it would appear that the plastic clips that hold it in have snapped on the sensor itself. I can't for the life of me unplug the sensor, can any body tell me how to get it undone?

I've also checked the control unit and it's not damp etc so I'm hoping that is ok.
I suppose the wiring may also be an issue but I don't fancy taking the car apart to check all the wiring just yet.

I'm gonna be busy it seems as the booster heater needs looking at too (was no jet aircraft sound last winter and the engine was taking ages to warm up, hopefully just the glow plug).

#43 Big Silver 1

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Posted 31 July 2007 - 07:40 PM

I have a 2002 Galaxy 1.9TD Ghia, just reading some of the postings and found others have had the same problem with the rear washer connection coming undone under the passenger footwell ! Resolved now not sure if there is any water damage to the control unit.

The non clicking sensor is the drivers side front, how the chuff do you get at that baby to swap out?

Also anyone any success on buying the spares?

Any help much appreciated.

#44 G7enn

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Posted 24 February 2008 - 12:56 PM

We have the continuous bleep for 7 or 8 seconds from the rear, nothing from the front and the ominous flashing of the switch on the dash. We have any number of electrical problems with our Galaxy 2.3 Ghia March 2001. Thanks to this thread, I have just about to remove the passenger seat to remove and initially dry out the parking sensor module, part number YM21 15K866 AA, Ford Finis 1111381. Hopefully this will rectify one of the myriad of electrical problems we now have. Thankyou all to a great site, with an invaluable technicle section.
(Have a Microcat image of parts involved - but not sure how to upload - could be temporary restrictions for a new user)
I haven't checked for the clicking. :wacko: as yet. (Is there any way of checking each sensor ? The part number of the sensor on our Galaxy from 15/04/2000 to 15/042002 is YM21 15K859 BA, Ford Finis 1121129 (same for all 8 pieces 4 at the front and 4 at the rear)
Thanks in advance for any help and I will post my findings..........

#45 nigel57

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Posted 24 February 2008 - 05:51 PM

i had the same problem with parking sensors not working some months ago .... front and back sensors would not work ... its been recommended in this forum to listen to each sensor for a clicking noise when its ok in my case all the sensors clicked ok.. my only option to locate the fault was to use VAG-com this allowed me to test the all the sensors to locate the faulty unit. my faulty sensor was locate to the rear on the drivers side ..the sensors just clip in but due to the build-up of dirt etc they may be stuck solid . please be careful when buying from ebay there are a number of ultrasonic sensors that look correct for your car but its connector may be the wrong size to fit your plug (thats the mistake I made) . the price from ford is over £50
:wacko:

#46 G7enn

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Posted 24 February 2008 - 08:47 PM

How and where did you det to use VAG-com ????
(Diagram now attached)

Attached Files



#47 nigel57

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Posted 25 February 2008 - 07:42 PM

How and where did you det to use VAG-com ????
(Diagram now attached)

HI G7enn
if all your ultrasonic sensors are ticking will indicate they are ok most of the time if like me it wont help unfortunately 1 faulty sensor front or back will fail the entire system. then the problem is which one. to change .
to locate my faulty sensor I used VAG-com v704.1 which can be downloaded free off the internet onto a laptop Now for the bad news you will also need a lead to connect the laptop to the cars diagnostic socket bottom of the dash above the accelerator pedal
The lead I used which appears to work on all modules in my cars electronics is made by www.SKPANG.co.uk is the KEY-USB+ duak K Dongle.
G7enn If you have not got VAG-com may be somebody else on this forum who live local can help.

Below if a brief description of how to check your sensors with VAG.com
boot up the laptop and start VAG.com Plug your lead into the laptops usb and the cars Diagnostic socket
turn the cars ignition key until the warning lights display ....... this method has to be used for all modules vag.com will tell you to switch the ignition off when checking the airbags
press Options select usb if you dongle is usb and press test .... if all is ok vag.com will say the connection to the car is ok. ... if not try unplugging the usb connection and plugging back in and testing again..
if the test is ok and you have a connection go to the main page of Vag.com . (if the connection has failed you wont be allowed access)
on the main page on vag.com click the following buttons.....select control module......electronics1.......76-park assist
on entering park assist click on measuring blocks in basic functions
you will see 3 groups off measuring blocks one above the other not showing much of interest at the moment all 3 displaying group 000
click on the + buttons on the first block to 001 this is displaying the distances in mm of all four front ultrasonic sensors volunteer somebody to walk up to a front sensor one of the values seen will change check all 4.
click on the + buttons on the second block to 002 this is displaying the distances in mm of all four rear ultrasonic sensors volunteer somebody to walk up to a rear sensor one of the values seen will change check all 4.
any sensor that fails to change in value or is vastly different from the other 7 will be the faulty unit.
hope this helps
:)

#48 G7enn

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Posted 26 February 2008 - 09:57 PM

Good Evening Nigel,
Thank you kindly for the detailed diagnostics, one more, thing I googled VAG-Com... but could find no free down loads, can you or other member point me in the right direction... Ty

#49 nigel57

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Posted 27 February 2008 - 07:28 PM

Good Evening Nigel,
Good Evening G7een
Thank you kindly for the detailed diagnostics, one more, thing I googled VAG-Com... but could find no free down loads, can you or other member point me in the right direction... Ty

http://www.ross-tech.com/ is where you can download vag.com your main problem is getting a suitable lead ... lots of people on this forum have tried ebay.. it may be worth having a look at http://www.skpang.co.uk/catalog/ this may give you some idea of price you may have to pay ... looking at skpang web site I cannot see my unit . it may be of benefit for you to email them for the most suitable unit for you.

#50 bubby

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Posted 22 March 2008 - 08:26 PM

Hello!
We bought a X-reg ford galaxy with front and rear parking sensors today. When we went to look at it for the first time we asked the owner to show us how the parking sensors worked and they were working perfectly. So a week later we went and collected the vehicle. However: when the engine is switched on, nothing happens expect if we are reversing the light on the parking sensory switch flashes and it makes a short noise. After this the noise disappears but if we are going slowly the light still flashes but it does not make a noise. Even is we switch the parking sensors on when going towards the garage, the light flashes but there is no noise.
Not sure what the problem could be as the system seems to be working ok and it seems to be a problem with the sound. Also as it was working when the previous owner showed us, it is difficult to say that it was faulty before. But how could it have developed a fault in a week?
Thanks in advance for any advise.

#51 NikpV

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Posted 22 March 2008 - 08:32 PM

look at item 17 in the faq - may give a little more info

#52 RTL

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Posted 07 April 2008 - 08:28 PM

Another Galaxy, same fault!
The park assist module in my bus has also been for a swim due to that dodgy washer water pipe joint.
Has anyone managed to source a unit cheaper than through Fraud?
Has anyone got one for sale?
Unit required YM21 15K866 AA.

#53 amjad karim

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Posted 17 April 2008 - 07:34 PM

I too have the same problem, when reverse is selected he light on the dash goes mental with a beeping for a bout 2 seconds. I will check the clicking tomorrow but could some one thell me when the front sensors come into play. Is it that they come on whenyou are driving forward very slowly or do you have to press the button to engage the front sensors.

I have nly had the car since yesterday and one of the reasons I bought it was due to parking sensors. Had reversing sensors on my old BMW and fell in love with them ( call me a lazy driver)

Thanks in advance

#54 gregers

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Posted 17 April 2008 - 07:57 PM

your a lazy driver :rolleyes:

on mine the front sensors work when in reverse and going forward.

#55 Davo

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Posted 01 May 2008 - 11:18 PM

I would like to commend this forum without which I would not have been able to fix my parking sensor problem. I am posting this to clarify something I did not pick up when reading the posts on parking sensors. I read that there was a tick when the parking sensors were switched on so I organised one of my children to sit in the car switching the parking sensors on and off. I now realise that the parking sensors tick constantly the whole time while they are switched on not just once the moment they are switched on as I had thought. I thought that by posting this I might save someone some money which I just wasted on child labour. My parking sensors have not worked since I got he car, but, knowing that the senors should tick, I was able to find the one which was not ticking. It was the nearside rear one. I swapped it with another one and found it was still the near side rear one not ticking. So I checked the wiring and after fiddling with it, one of the wires was so corroded it came away. I removed the bad bit, soldered it back together, and the parking system now works perfectly - no replacement parts required. I have read in these posts that it seems to be the nearside rear wiring which is prone to failing.
I do not have the VAG-COM thing but its sound like I should get one.

#56 niallsan

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Posted 17 May 2008 - 08:44 PM

I think I went overboard with power washing the front bumper on the gal and now when the parking aid is switched on I get two beeps from the rear buzzer followed by about 5 second blast from front buzzer. I checked the rear sensors and they all(4) are emmitting high frequency burst. Went to the front and as far as I can tell none of the transducers are emitting anything.

So, am I correct in saying, that if there is a fault with one of the tranducers in the front - non of the FRONT transducers will work????????

#57 niallsan

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Posted 11 August 2008 - 11:20 AM

I think I went overboard with power washing the front bumper on the gal and now when the parking aid is switched on I get two beeps from the rear buzzer followed by about 5 second blast from front buzzer. I checked the rear sensors and they all(4) are emmitting high frequency burst. Went to the front and as far as I can tell none of the transducers are emitting anything.

So, am I correct in saying, that if there is a fault with one of the tranducers in the front - non of the FRONT transducers will work????????



Just an update on the fix for above:- Brought the problem to the local Ford dealer. They swapped a known good control box(under passenger seat)from another Galaxy into mine and found a front sensor defective(none were working with my control box). Replaced the original control box and- still noy working. I had to order a new control box. New box arrived- plugged it in-now front transducers work but one of the rear ones was defective. The garage had made sh1t of the transducer taking it out and replaced it with the wrong orientation!!! Which, by the way, is impossible! Ordered a new transducer on ebay for half of what the garage is looking for- €90. All working again. The dealer will probably try and get out of supplying a new transducer- I love main dealers! Their mechanics are outstanding!

Anyone know how to debug a control box? Anyone interested in a defective one?

Edited by niallsan, 11 August 2008 - 11:22 AM.


#58 Kieran McCarthy

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Posted 07 October 2008 - 08:47 AM

My sensors stopped working like everyone above.
Continuous 4 second beep when engaged and then nothing but a flashing light in the switch.

So using the tip on this forum I went around to each sensor listening for the clicking.
I found one at the back that was not making any noise so I got on to Ebay and ordered: Reversing sensor 7M3 919 275A Ford Part no: 1 208 836

this arrived and I stuck the sensor in the bumper. :31:
Still no joy. :D

So I checked for the clicking again.
All sensors are making a noise, including the replacement. However the replacement is clicking twice as fast as and a bit louder than all the others.

I haven't been able to get my laptop to talk to VAG-COM yet.
Without this could anyone suggest what could be the problem?

Could it be the park assist module. I did have the puddle in the front.
Or a dodgy replacement sensor?

:16:
Kieran

#59 Taliska

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Posted 22 March 2009 - 07:04 PM

Two dodgy on mine - ouch.

Taliska

#60 Grazzer

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Posted 19 June 2009 - 07:35 PM

Help!

Galaxy MKII Newbie.

My front passenger side sensor doesn't TICK, so I've purchased a new one off fleabay for £30...straight from Portugal :P

I tried to get access to the sensor this evening to replace it but couldn't reach.

Do I need to remove the bumper in order to replace this sensor or is there a "short cut"?

Will try again tomorrow morning.

Cheers,
Graham