Retrofit sensor Rain/light mk7.5

[patrick285]

good morning,

as for the light / rain sensor coding where can I find the items to activate it in the adaptation ??

golf 7.5 2018/07
output with climatronic humidity sensor

2 pin and 16 pin BCM cable run
Automatic light selectors installed
sensor 5Q0 955 559

regen_Lichtsensor: LIN_regen_licht_sensor

then I don't find anything anymore

thank you all

[dv52 (Australia)]

 Patrick: Hi. hmm........."2 pin and 16 pin BCM"? Not on my wiring diagram. The RLS is a LIN slave of the BCM- so it only needs ONE wire to the hex09 module (not 2 x connections).   Perhaps read HERE (see insert picture - notice BCM connection is pin #28 on socket C)

Don

[patrick285]

good morning Don

I connected the pin 16 of the BCM (C) to the switch to have the automatic switch of the lights
pin 28 is already present having the humidity sensor as standard.

being a golf 7.5 restyling you have to enter the adaptation.

in this case I am missing some steps.

[manni3000]

I also retrofitted the sensor successfully after performing these steps:

• Replace existing humidity sensor HU (5Q0907658) by a rain-light-humidity-sensor RLHS (eg. 5Q0955547C)
• In case of retrofitting Auto-Light: Replace existing light switch (5G0941431BG) with a new one with Auto position. Buy a signal wire (000979009E) and connect pin 2 of the switch, with pin 16 of jack T73c of the central control unit (BCM).
• Go to Contol unit "Central Electrics" -> "Adaptation" -> "Assistance light functions"
• Change existing value of property "Regen_Lichtsensor" to "LIN_Regen_Licht_Sensor"
• Go to "Aussenlicht_uebergreifend"
  
• Only if you have the Auto-Light-Switch installed: Change existing value of property "LDS_mit_AFL" to "Yes"
• Optional: Enable Coming/Leaving Home.
• Change existing value of property "Helligkeitsschwelle Forward-Messung" to "46400"
• Change existing value of property "Helligkeitsschwelle Infrarot-Messung" to "12"
  
• Go to "Subsystems" -> "RLHS" -> "Long coding"
• Make sure that your device shows the Coding "00A8DD". If not, replace the existing coding (works in most cases).

[patrick285]

thanks manni3000

I was missing 2 adaptations and you served them to me on a gold platter ....

very happy

Thank you very much

[dcjarne123]

manni3000
Thankyou very very, because of you i fixed the auto light switch

[stefangricko]

Did everything that’s needed for a retrofit (waiting for a switch to arrive for auto light to be final, “playing” with a rain sensing activation right now) but seems to can’t understand/set everything as needed… everything works fine when I push stalk up for rain sensing, sensitivity works fine, but I have one problem: when I leave auto rain wiper on and turn off igntion/leave car and when I return and turn ignition on, wipers won’t start until I turn them off and on back again… maybe someone can help me, perhaps I didn’t code everything as I should?

Also, I have a question regarding whole auto wiper setup: when they’re turned on to first step on wiper stalk and when there’s not much rain, wipers engage and stay in that position for about 15 seconds and afterwards, they go in parked mode until sensor feels more rain. Is it noemal behavior or when they’re engaged they shouldn’t go to park mode at all until I turn them off on the stalk?

[stefangricko]

Anyone?

[dv52 (Australia)]

stefangricko : Hi.

Not quite sure what is meant by "Did everything that’s needed for a retrofit" - clearly something is amiss with your set-up (NO, the wipers shouldn't "stay in that position for about 15 seconds").


There could be any number of reasons for the odd behavior described in your post (including the missing correct rotary light switch - yes this switch is related to the light sensor, but it uses the same single LIN wire as the rain-sensor for comms).

Without information regarding the part numbers for the new equipment, details of the coding changes made to ALL modules, exact error codes in the SCAN and which version central electrics module is fitted to this car - it simply ain't possible to make any remote diagnostic comments regarding your post-retrofit observations

Don

[stefangricko]

dv52 (Australia) : Hi

Thank you very much for your answer.

Everything you said is with good point. Here are some of the replies regarding all of your concerns, and hopefully, we can continue our conversation for further accomplishment of started retrofit on my side.
I did actually all the things I thought I should do regarding my retrofit, and when I "look back" at those changes, now I see that maybe that's not everything.

As for the sensor, I installed the one I find compatible for my car, which is 8U0 955 559 C (found info online that "B" variant is for the pre FL Golf 7, mine is FL, 2018.my). The rotary switch I believe I should go for is the 5GG 941 431 D but actually, I'm having some trouble finding OEM - purchased one from eBay as OEM but it sure ain't OEM when I received it... Searching for real OEM is in progress, so if there's possibility of helping me regarding this matter also, I would appreciate it.

I will attach details about my control module later in this post, but as for the error codes, I'm not getting any. If needed, I could attach a full scan also, there's actually two codes but not regarding this retrofit - they're present for some time before I started retrofit - some is for the A/C left flap position setting and other is something similar, but like I said earlier, they were there earlier.
I'm attaching also a picture of coding I did.










Photo with cods, I circled with green what I did and put a "?" of the last thing which I didn't understand very well, so a bit of an explanation would be a lot helpful

I think I covered pretty much everything that you asked me for, but I'm looking forward to get back from you or any other fellow member who is capable of helping me in this process. 


P.S. I didn't really understood your statement regarding wipers behavior:

(NO, the wipers shouldn't "stay in that position for about 15 seconds")

Does this mean they indeed should stay engaged while stalk is in "Auto mode" all the time until I turn them off and not go into park mode after 15s of inactivity?


EDIT: Fun fact - Just finished a phone call from a local authorised VW dealer, main one in my country and they even don't have that part code (switch) in their database, they only have 5G0 941 431 D and when they sent me a photo, it's not nearly same as the one I should need for my car




EDIT 2: Found OEM pre-owned, 100% functional, 5G0 941 431 BD on eBay. Should this one be OK?

[dv52 (Australia)]

Jan 16, 2024 9:05:36 GMT stefangricko said:

Photo with cods, I circled with green what I did and put a "?" of the last thing which I didn't understand very well, so a bit of an explanation would be a lot helpful

I assume that you will undertake the changes related to the rotary light switch when you get the new switch. Here is my interpretation of the wiring set-up for a rotary light switch with an AUTO position:

Notice the wire from "PIN2" on the Euro-switch to "C PIN #16" on the "Body Control Module (J519)"- which is VCDS lingo. In OBD11 speak, the "Body Control Module (J519)" is the central electrics module! So, this is the new wire mentioned in the second dot-point in your to-do list. If you a very, very lucky- this car might already have the additional wire installed (eyeball the wire-count in the loom that terminates on your existing rotary-light-switch - are there 9 x wires?)!

This is a picture of the central electrics module (again in VCDS lingo) showing the 3 x Sockets and the pin numbering:

As for the "last thing", you are almost there with the first picture above. Click-on Long coding and you should be taken to a screen showing the long-code string for the RLFS. The instructions want you to confirm that the long-code value is 00ADD. If not, make the required amendment(s)

Jan 16, 2024 9:05:36 GMT stefangricko said:

P.S. I didn't really understood your statement regarding wipers behavior:

(NO, the wipers shouldn't "stay in that position for about 15 seconds")

Does this mean they indeed should stay engaged while stalk is in "Auto mode" all the time until I turn them off and not go into park mode after 15s of inactivity?

Unless you request (via the MENU) that the front wipers be parked in Service position, this shouldn't happen. When the rain sensor is correctly controlling the front wipers,  the wiper blades will return to the normal lower position on the windscreen immediately after the wipe is finished (i.e. sans 15 second interlude in the service position)

Jan 16, 2024 9:05:36 GMT stefangricko said:

Found OEM pre-owned, 100% functional, 5G0 941 431 BD on eBay. Should this one be OK?

This is the 5G0 941 431 BD switch

If this car has both front and rear fog-lights, I suspect that it's the correct rotary light switch

[stefangricko]

dv52 (Australia) :

Thank you mate! You're golden!

To be honest, my plan was to play a little with the BCM and add a wire because I don't have it present in my loom. That's not a problem, got a wire few weeks ago and waited for my switch to arrive. When it arrived, like I said, it wasn't any good. Ordered new one, from junk yard somewhere in Europe, pre-owned, OEM and waiting for it right now. Having that in mind, I'll wait for it to arrive and then will be doing process of adding a necessary wire.

Again, about long coding string, I'm afraid that I don't really understand...
Here are the screenshots what I have when go into RLFS long coding, 00A8DD. I have byte 0, 1 and 2. I'm attaching what ticks are there. If you could look into it and share a opinion or two.








Also, I'm attaching wipers menu from car infotainment, there isn't such a option you're talking about...


Here's a quick video to demonstrate behavior.
imgur.com/a/XUiSuhc

Unless you request (via the MENU) that the front wipers be parked in Service position, this shouldn't happen. When the rain sensor is correctly controlling the front wipers, the wiper blades will return to the normal lower position on the windscreen immediately after the wipe is finished (i.e. sans 15 second interlude in the service position)

[dv52 (Australia)]

Yes, the long-code on new RLFS is 00ADD - so nothing needs to be changed

OOps... my description for the wiper service position was for Audi - for a VW the steps to move the windscreen wipers to the service position are:

• The bonnet must be closed
  
• Switch the ignition on and then off again
• Briefly press down the windscreen wiper lever

The wiper dynamic in your video looks OK to me - When you said " they go in parked mode" in your first post, I thought you meant this

Don

[stefangricko]

Hi, it’s me again.
New wire has arrived a few days ago (first one I ordered couldn’t click in place - chinese one…) that I ordered from Germany, did add-on of it along with a switch. Also, I’ve performed necessary coding for enabling it including CH/LH function, all working flawlessly.

Had some trouble with getting CH/LH to work and enable it through multimedia but resetting only Lights section did the job.

I noticed kind of odd behavior regarding auto lights - when I’m at the direct sun it’s okay when I cover sensor, lights go on, when I uncover sensor they go off, but here’s the catch - when I’m in a shadow of a house (one story building) lights go on and won’t turn off all the time until I’m at direct sun. I’m kind of frustrated with this behavior and did some digging into Central Electrics, found some settings in the Light sensor section using OBDEleven but didn’t want to mess anything…
Also I’ve tried searching something on the forum already but didn’t have any luck. Could I count on some kind of help directing me someplace I could potentially manage “lx” in those settings so I can make it less sensitive. CH/LH is also activated very early in the sunrise when there’s plenty of daylight.

[dv52 (Australia)]

stefangricko : Yes, you are indeed back again!!!

A bunch of us had a discussion about this matter - i suggest thst you read HERE

Don