Yet another Parking Sensor question! But I'm stuck!

[Motor84]

Hi guys,

I have searched the forum but can't seem to find exactly what I need. Hope someone can help.

1. Is there a knack to removing the outer side rear sensors? I have taken the cover off where the 4.4 exhausts would go, reached in, uplugged the sensor but can't remove it. Is there a special twist? Or do I need a tool? Can't push it in or out. Don't want to break anything!

2. Do the front and rear sensors form a circuit? I have loosely plugged in my new rear sensor, all 4 rears are now clicking when I do the ignition test. But they still don't work. I do however still have a faulty front sensor which I won't be able to replace for a while. But do I need to replace that front one too for the rears to work?

Any help greatly appreciated.

Cheers

Ben

[Horizon]

Feel at the base of the sensor housing ( inside the bumper space ) pull the tab downwards and away from the sensor.
It should all come loose and allow the sensor and outer housing to come towards the outer side

[Motor84]

[quote="Horizon"]
Feel at the base of the sensor housing ( inside the bumper space ) pull the tab downwards and away from the sensor.
It should all come loose and allow the sensor and outer housing to come towards the outer side
[/quote]

Brilliant, thanks Horizon, I'll give that a go. Do you know if the rears should work even if the fronts don't?

Cheers

[Horizon]

[quote="Motor84"]
[quote="Horizon"]
Feel at the base of the sensor housing ( inside the bumper space ) pull the tab downwards and away from the sensor.
It should all come loose and allow the sensor and outer housing to come towards the outer side
[/quote]

Brilliant, thanks Horizon, I'll give that a go. Do you know if the rears should work even if the fronts don't?

Cheers
[/quote]
If any sensor is out, the system will just sound a continuous tone once reverse is selected, regardless of location.
You can switch off the front ones only via software such as BMW Scanner 1.4.0 and possibly Carly app
The front and rear sensors are wired separately to the PDC module, so don't share the same wiring plug
If you get the rears working and the fronts are inoperable, maybe someone has turned off the fronts, or it could be a faulty module.
Replacing front sensors means bumper off on facelift E53 I believe, also the outer sensors are the 90degree angled sensors inner are straight ones ( same as rears )

[Motor84]

Successfully fitted the new rear sensor. Did the test, all 4 are clicking now. Still not working!  :blink:

I've not done the front one due to the bumper off situation for front. Rears should work though? Could it be something else?

If its not the sensors and something else, would one of those cheap diagnostics tools pin point the issue?

[X5-D-Sport]

I agree with out knowledgeable friend...
I have just ONE front corner sensor not working & the whole lot are buggered as a result.
Conveniently its a front outer    ... so its bumper off when the sun shines again....

I may try to make some kind or retro fit that allows for an easy swap out without removing the bumper in future, as as they are bound to fail again - because they can.

[henrym3]

But you know that if you modify it to make life easier that one will never fail again

[Motor84]

[quote="X5-D-Sport Salisbury"]
I agree with out knowledgeable friend...
I have just ONE front corner sensor not working & the whole lot are buggered as a result.
Conveniently its a front outer    ... so its bumper off when the sun shines again....

I may try to make some kind or retro fit that allows for an easy swap out without removing the bumper in future, as as they are bound to fail again - because they can.
[/quote]

Reading deep into your post, are you saying the outer fronts are bumper off but the inner fronts are not? Mine is a front inner.