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-   -   BMW X5 Parking Sensor Problem (https://xoutpost.com/bmw-sav-forums/x5-e53-forum/9998-bmw-x5-parking-sensor-problem.html)

SamuelJ 01-16-2006 09:43 PM

BMW X5 Parking Sensor Problem
 
Hi,

I'm new to this Forum - please be gentle with me. . . .

I purchased a 2001 X5 4.4 Sport recently and am very very impressed with it !

I have a problem with the parking sensors - when I engage "PDC" it bleeps at me and flashes the light on the button. The manual says simply "Take it to a dealer".

Could someone give me somewhere to start investigating the problem? I'm not afraid of getting my hands dirty but need a starting point.

To complicate the issue - they worked when I bought the car and now they work about 1 in 10 times I use it.

Any advice welcome.

Cheers & thanks in advance.

JCL 01-16-2006 10:57 PM

Welcome!

The best first step is to clean the surface of the sensors. If they are dirty they think there is something there. You are looking for the row of disks (the size of a one pound coin), on both the front and rear bumper.

If that doesn't make a difference, you can check the connections. Behind each sensor, if you can reach it, the cables clip in. It may be possible to find one loose, or in need of re-seating.

After that, take it to the dealer.

Good luck.

drex 01-16-2006 11:07 PM

Absolutely correct. Has there been any bodywork done, or bumpers removed? Usually a bad connection... if not, bad sensor -- dealer will have to check for that.

Rob_ will most likely have some input as well.... he's the expert!


Welcome to X5world, by the way!

Quote:

I'm new to this Forum - please be gentle with me. . . .
Don't worry, Samuel! Our playground is not like that!

:xoutpost:

SamuelJ 01-23-2006 11:21 AM

Hi & sorry for being late coming back, I'll climb under the car tonight and have a look and keep you posted.

Many thanks.
John

statdoc 01-23-2006 11:24 AM

Welcome to the board!

Vitalik 01-23-2006 04:55 PM

Hi!
Take your X to any noiseless area,switch ignition ON and engage reverse gear.Listen and put the finger to
each sensor.You must heard and sense a 4Herz (four times per second) impulses from every sensor in front and rear of car. Replace sensor(s) which not transmitting ultrasonic signals. Another way is taking
your car to GT-1 or DIS computer to define which
sensor is faulty.Good luck!

Jeremy 01-23-2006 05:01 PM

Quote:

Originally Posted by Vitalik
Hi!
Take your X to any noiseless area,switch ignition ON and engage reverse gear.Listen and put the finger to
each sensor.You must heard and sense a 4Herz (four times per second) impulses from every sensor in front and rear of car. Replace sensor(s) which not transmitting ultrasonic signals. Another way is taking
your car to GT-1 or DIS computer to define which
sensor is faulty.Good luck!


I guess "sense" would be the operative word since the human ear hears the 20-20K range. :confused:

Vitalik 01-23-2006 05:38 PM

Your right Jeremy,but you hear a lot of acoustic harmonics.Anyway parktronic sensor impulses is can be heard!You can check this on your car.

Jeremy 01-23-2006 07:49 PM

LOL - I know they make crackling/sizzling noises. Just kidding around.

SamuelJ 01-24-2006 06:09 AM

I'd like you to picture the following situation - it's about 11 O'clock at night, it's very dark and very quite. You see a man on his drive, on his knees scrabbling around placing his ear at different points on the bumpers of his car, front and back - he seems deep in thought. You approach the man and ask him if he's "OK?" he responds "Someone on the Internet told me to do it". I'll leave the rest to your imagination - needless to say my neighbour thinks I've thrown a cog.

Having said the above. . . You are spot on.. . ! - thank you for that gem of information. I have a clicking (4hz) from each sensor although some produce a "cleaner" 4Hz. I will this evening check all the electrical connections and re-listen. . I'll then replace the ones not producing a "clean" 4Hz.

Thank you once again all, I'll keep you informed (as long as my neighbour does not have me committed).

Cheers all.

drex 01-24-2006 06:49 AM

we've all done something similar on this board.

when i first got my 2nd X5, i took it apart and the whole neighborhood thought i'd gone mad....

welcome to the club!

afnetman 11-12-2006 06:21 AM

PDC Replacement Parts
 
Hello. I am looking for replacement sensors for a 2004 X5. I believe one of my sensors is broke (after I hit the side wall) and now my PDC is not working. After everything I have read, I do believe this sensor is bad. I would like to purchase one for the front side and one center sensor. Can anyone tell me where I can pruchase these. I live in Spain and going to the BMW dealer here and asking for one is like asking them for the first 5 children (impossible) Any help would be a great help.

Aimster 11-12-2006 06:27 AM

Mine flashed and didnt work

but this happened after I waxed my car

I washed my car and it never happened again.

ifly 11-12-2006 10:42 AM

Quote:

Originally Posted by SamuelJ
I'd like you to picture the following situation - it's about 11 O'clock at night, it's very dark and very quite. You see a man on his drive, on his knees scrabbling around placing his ear at different points on the bumpers of his car, front and back - he seems deep in thought. You approach the man and ask him if he's "OK?" he responds "Someone on the Internet told me to do it". I'll leave the rest to your imagination - needless to say my neighbour thinks I've thrown a cog.

Having said the above. . . You are spot on.. . ! - thank you for that gem of information. I have a clicking (4hz) from each sensor although some produce a "cleaner" 4Hz. I will this evening check all the electrical connections and re-listen. . I'll then replace the ones not producing a "clean" 4Hz.

Thank you once again all, I'll keep you informed (as long as my neighbour does not have me committed).


Cheers all.

As stated previously Samuel :xoutpost: and yes we have all done crazy things in front of our neighbours for these vehicles. If they are all clicking then the PDC computer has gone south.

Rjoubran 02-27-2016 09:27 PM

Quote:

Originally Posted by Vitalik (Post 88586)
Hi!
Take your X to any noiseless area,switch ignition ON and engage reverse gear.Listen and put the finger to
each sensor.You must heard and sense a 4Herz (four times per second) impulses from every sensor in front and rear of car. Replace sensor(s) which not transmitting ultrasonic signals. Another way is taking
your car to GT-1 or DIS computer to define which
sensor is faulty.Good luck!

Thank you Vitalik. I followed your method and it worked perfectly. To hear the ping better, I touched the metallic tip of the screwdriver to the parking sensor and got my ear closer to the handle. This seems to amplify the pinging sound of the sensor. It was loud and clear on all good sensors. The silent sensor just needed cleaning at the electrical connection. Cheers and thank you.

sew 02-28-2016 07:52 AM

Yes, you can hear the clicking quite clearly to identify which sensor/s is/are not working.


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