VW Fitted Parking Sensors not working...constantly beep!

[bimster]

After this Winter, my manufacturered front and rear parking sensors have not been working 95% of the time and just constantly beep when I put it in reverse.

Very Occasionally they work and no constant beep and work as intended.

I used to get the constant beep when it used to rain and theres a fault with the sensors when moisture gets in them but when they would dry out or weather get dryer, they would start working again. But its been like this for over a month now.

Any ideas on cost of getting a indy specialist to fix these, ie if they have to replace some sensor, how much it is for an individual sensor and how big a job it is? will vagcom or VCDS tell which specific sensor is to blame?

Any help, be much appreciated. Its a cost I could do without but I have got used to the sensors and the back of the 'sat I cant even see where it ends, so I know its gonna to end in a bump if i dont get it fixed.
Not sure if to wait till proper summer dry weather kicks in before getting it done as might sort itself out providing we have some summer months!

[harltech]

After this Winter, my manufacturered front and rear parking sensors have not been working 95% of the time and just constantly beep when I put it in reverse.

Very Occasionally they work and no constant beep and work as intended.

I used to get the constant beep when it used to rain and theres a fault with the sensors when moisture gets in them but when they would dry out or weather get dryer, they would start working again. But its been like this for over a month now.

Any ideas on cost of getting a indy specialist to fix these, ie if they have to replace some sensor, how much it is for an individual sensor and how big a job it is? will vagcom or VCDS tell which specific sensor is to blame?

Any help, be much appreciated. Its a cost I could do without but I have got used to the sensors and the back of the 'sat I cant even see where it ends, so I know its gonna to end in a bump if i dont get it fixed.
Not sure if to wait till proper summer dry weather kicks in before getting it done as might sort itself out providing we have some summer months!

Have you tried cleaning the sensor faces. When they get dirty they do not work very well.

The parking sensors do have diagnostic function and if one is faulty it should be recorded

[bimster]

have tried cleaning it with a tissue a couple of times, one time made a slight differerence as started working when cleaning it but by time i came to drive it a couple of hours later, they didnt work.

[iwaters]

One of the sensors is faulty or going faulty. You will need a diagnostic tool, VCDS etc, to tell which.

They don't always log a fault code. You will have to check the measuring blocks to see what distances they are registering and what their oscilation time is.

[man_utd_99]

ive got this on my new passat. how much would it be to scan on a vcds and to replace the sensors?

what did you end up doing to fix the problem btw mate?

[DSG4ME]

Wet wipes is your friend, try cleaning with them first and if no joy clean the contacts up behind the bumper, assuming it's not a sealed loom.

[man_utd_99]

Wet wipes is your friend, try cleaning with them first and if no joy clean the contacts up behind the bumper, assuming it's not a sealed loom.

is there a "how to" to do this? or a step guide? dont want to ruin anything more than it is

[DSG4ME]

is there a "how to" to do this? or a step guide? dont want to ruin anything more than it is

I assume you mean the wiring rather than the cleaning? get under the rear bumper and you should see the wires, if they are individual with a plug to each from the loom try disconnecting each one, give it a wipe and check there's no water inside, don't just tug them off though, they probably need a clip pressed in to remove, a how 2 I've not seen, google VW parking sensors removal and you might get a result.

[man_utd_99]

I assume you mean the wiring rather than the cleaning? get under the rear bumper and you should see the wires, if they are individual with a plug to each from the loom try disconnecting each one, give it a wipe and check there's no water inside, don't just tug them off though, they probably need a clip pressed in to remove, a how 2 I've not seen, google VW parking sensors removal and you might get a result.

i had a look under the car and there is no way to get to the parking sensors without taking off the bumper entirely :-/ is there an easier way. they work now and again and what ive noticed is that they work the other way, where i get a constant beep initially and when backing up closer to a car it beeps on and off meaning stop and its close enough!

[troggy1969]

Had the same problem. Bought a sensor off ebay for £20 then once you undo the star bolts and unclip the bottom of the bumper you can get your hand up. Prepare to lose some skin but it felt better than the £70 for the sensor and 1.5 hours labour VW quoted me!!