Looking at that last pic - I would definitely replace those terminals if they are all as corroded as that one. You are only putting off failure again with poor contacting. Is there any clue as to the route of the water into the housing as the wire seal looks good and clean. New housing and terminals + making sure that all seals are present and the grease as backup.
Yep oldie but goodie ordered new ones but the chap can't send out until the current unpleasantness ends so only doing this to double check no other faults in the system and I've not much else to do currently.
Can't for the life of me work out how the wet got in, in fact they were more than wet looks almost muddy in there! No reason to think anyone had them apart and left them like it in the past but surely you would clean them before re-installing if that was the case?!
Can't for the life of me work out how the wet got in, in fact they were more than wet looks almost muddy in there! No reason to think anyone had them apart and left them like it in the past but surely you would clean them before re-installing if that was the case?!
It is definitely a weird one. I wonder if the main seals are the wrong ones for the housings.
did you ever figure out the wiring? I'm in a similar boat, put a new connector on the driver /right side as it was corroded - 2015 T5 - I think because mud built up over the sensor keeping moisture in? anyway, on rewiring with a new connector and the individual parts on the cable I now get a red 'something in immediate vicinity' signal before it says optical system not operational. I wonder if I connected it wrong but the only one I rewired was the right/driver side one and it is I think the same as your picture (ill be taking it apart again when I get time so will double check!)
thanks - thats what I did - I was just curious as I got the same fault after rewiring as the OP so wondered if we had made a similar error. tbh I suspect I probably damaged the wires to the sensor - I didn't have a small enough crimping tool so put the individual connectors on with pliers and they ended up being a bit of a squeeze into the 3 holed receiver. will have another go and see if I can sort it - the dreadful loud beep freaks me out every time I go to reverse!
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I have this problem again but this time on my sisters van, a 2013 T5.1.
On my own van (earlier in this thread) I started by blowing out the connector previous mentioned behind the rear nearside quarter panel, which didn't work, and in the end I had to replace all of the connectors that plug into the actual sensors.
So of course on my sisters I started with the sensors. Well in this case they are fine, in fact I would imagine they have been replaced as there is no wet or mud in them like there were with mine.
I did do the basic first or removing them one at a time to clean and there is no sound coming from any of them.
From what I understand other possibilities are the module under the steering wheel and a connector under the passenger seat.
Thanks in advance for any help.
On my own van (earlier in this thread) I started by blowing out the connector previous mentioned behind the rear nearside quarter panel, which didn't work, and in the end I had to replace all of the connectors that plug into the actual sensors.
So of course on my sisters I started with the sensors. Well in this case they are fine, in fact I would imagine they have been replaced as there is no wet or mud in them like there were with mine.
I did do the basic first or removing them one at a time to clean and there is no sound coming from any of them.
From what I understand other possibilities are the module under the steering wheel and a connector under the passenger seat.
- I can't acces the rear nearside quarter panel easily, it has been lined with carpet in one piece with no panels. I don't know if I can get access to the connector by taking off the bumper and pulling the cable gently towards me, as I can't remember from doing my own, and to look would mean removing my rear seat/bed to access the panel. Or anyone know another way of getting in there?
- Does anyone know how to identify the connector under the passenger seat? To me it looks identical to own (picture of mine attached) and I can't recall anything that looked like it could be this when I did my electrics.
- Has anyone ever had an issue with the module end? I have found plenty of people online saying how to check it and how hard it is to access but nobody who has had one fail yet!
- Anything else I can try?
Thanks in advance for any help.
Certainly would help - just do an Auto-Scan - you can do a dry-run without actual VCDS here --> Ross-Tech: VCDS Tour
The Scan should report what's not working electrically - disconnects, failed sensors, etc. - under Address 10: Park/Steer Assist
A few fault codes here --> https://t6forum.com/threads/vcds-and-carista-fault-codes.14143/post-231838
The actual sensors can be interrogated using function "Advanced Measurement Values" (VCDS > Select Control Module > 10-Park/Steer Assist > Adv. Meas. Values
A few sensor addresses here --> https://t6forum.com/threads/side-as...spot-detection-bsd-retrofit.14590/post-371259
EDIT:
T5.1: black 10-pin connector under left seat - actually the same in T6.
Thanks, going to get the VCDS working ASAP.
This connector under the seat. Do you mean like the one in the rear quarter panel like Bob shows on post 4 here? >> faulty-rear-parking-sensors.4740
The reason I ask is that I can't see anything like that under the seat. You do mean under left seat on UK van?
Thanks.
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The connector is similar to the red, green, grey? connectors in your picture - just black (perhaps hiding behind the green in the picture).
Yes, under left seat (your passenger seat) - actually/fortunately these are the same on LHD and RHD.
It didn’t go so well!
Got the laptop sorted with windows and the VCDS operating and then the laptop gave out on me
Just before it went off I managed to read on the screen, but not save, Rear left parking aid sensor (or similar) and Open/Short to Ground. Does 'Rear left' mean what I think of as the left? So far N/S sensor, not second one in!
another thing that doesn’t make sense here, everything I read says sensors should make a chirping noise. If only one has failed why do I get no noise from any?
And before I had a little play with this, I got as far as a pop up window with lots of choices and tick boxes on them. If I can get back into it what do I do from there?
Yes, the sensors:
Rear Left Parking Aid Sensor
Center Rear Left Parking Aid Sensor
Center Rear Right Parking Aid Sensor
Rear Right Parking Aid Sensor
Browse through the choices and tick the "right" ones - the selected will be copied to the measurement screen and the actual values come alive right away.
You could expedite the search by typing in part of the name (e.g. "rear" on top line (as below "distance") - only selections containing the string will show up.
Then either
1) just observe, or
2) save a snapshot (into log file), or
3) log selected measurements (into a .CSV-formatted (Excel) log-file) - to create a time stamped event file (probably not needed here)
Thanks pauly
So is it only if the 'actual' sensor itself is faulty that the others will make the clicking sounds? I must say I haven't experienced this noise on any sensors I've tried listening to yet, and starting to wonder if it's a figment of somebodies imagination, either that or my OLD ears
So is it only if the 'actual' sensor itself is faulty that the others will make the clicking sounds? I must say I haven't experienced this noise on any sensors I've tried listening to yet, and starting to wonder if it's a figment of somebodies imagination, either that or my OLD ears
Yes, it's very difficult to hear (I can't hear either) without any helping tool - an old-school automotive stethoscope would be extremely helpful. Also by touching the surface very gently with your fingernail makes the sound somewhat audible.
EDIT: Actually a flat headed metal pin works very well - just touch gently the sensor.
EDIT_2: I just had to made a recording using an automotive stethoscope touching middle of T6 rear left PDC sensor - Woodpecker at 9.4 Hertz.
View attachment T6_rear_left_PDC_sensor.mp3
EDIT_3: Note to myself - the PDC above was 1K8 919 472 C, however the sensor is OEM T6 sensor. Need to verify using original 7E0 919 475 AA.
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