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Post by prefatcher on Mar 13, 2023 19:40:12 GMT
Hello, I have a few questions regarding light/rain/humidity sensor I order via aliexpress: (https://www.aliexpress.com/item/1005002427554459.html?spm=a2g0o.order_list.order_list_main.22.68041802KnExqJ) The sensor is on its way and once it comes i will install it in my golf mk7 (2018 year - currently i dont have any sensor installed under windshield but i am using chinese version of light sensor (https://www.aliexpress.com/item/32739721197.html?spm=a2g0o.order_list.order_list_main.98.2a601802eqZ02V) and now im upgraiding it - already have switch with AUTO on it). Wiring will be done like it shows in attached picture (GND, Power goes in autoswitch, and purple to BCM C plug pin 28). I just have some doubts about coding it. Can someone help me with step by step coding with OBDEleven for RLFS (Rain light humidity sensor). Thanks for help in advance. Attachments:
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Post by dv52 (Australia) on Mar 13, 2023 21:52:03 GMT
prefatcher : Hi hmm........... I'm confused !!! If this car is "2018 build", it almost certainly won't be "my Golf mk7" - rather, it will be a Golf mk7.5 (there are differences between the 2 x models)
And, are you sure that the diagram in your post is the same as the central electrics module in your car? I'm always ready to be corrected, but I have never seen a hex09 module in a mk7, or mk7.5 that has A, B, C connectors ALL with 52 x pins. I guess that it's possible (you don't say which country), but I very much doubt that your picture is compatible with a MQB platform car
Here's the pin-out for the connectors on a "normal" central electric module for a Golf mk7/mk7.5 (it's called a "BCM" in my picture) As you can clearly see - the arrangement is very different to the pin-out in your picture!! The wiring arrangement for the RLS is like this (very simple 3 x wire device):
Note: although not stated in my picture, the RLS connection to the central electric module is a LIN wire.
LIN stands for "Local Interconnect Network" - it's a single wire communications protocol. So, you will need to enable the LIN facility in the central electrics module. Likely the hex09 module in this car doesn't have an active long-code string - please confirm
Don
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Post by prefatcher on Mar 14, 2023 8:22:29 GMT
dv52 (Australia) first of all thanks for help, Yes, you are totally right. When I retrofitted my foot lights I used PIN 72 on connector C. So the picture for BCM plugs that I provided is wrong (yours is correct, I am sorry). I thought all are the connectors that go into BCM are the same but that is not the case ( I only used connector C and did not check others when I was retrofitting foot lights). About my car. Its actually a little confusing because it has been manufactured in end of 2017 (in December) but it is considered as 2018 golf 7 (picture attached). Car has been bought in Europe (I am from Slovenia). Thank you for further information about wiring. Okey: GND will probably go on the same spot as I use GND for footlights. LIN wire will go on connector C - pin 28 + I need to enable LIN facility in central electrics as you mentioned (would really appreciate it if there is any information on how to do it or can I just find it on web) Where do I get T30 12V?( is that from harness that goes in to light switch for headlights?) "Likely the hex09 module in this car doesn't have an active long-code string - please confirm" - I am not really sure what you mean with "active long-code string". I am using OBDEleven pro so I can long code things in central electric if I am not wrong(if that is the question), will double check it (and edit post) + i will leave my cars scan info in tha attachment. Attachments:
OBDeleven_Log.txt (2.97 KB)
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Post by dv52 (Australia) on Mar 14, 2023 22:05:00 GMT
When I say "+12V (T30)" in my diagram, I'm referring to DIN 72552 - which is a DIN standard for labeling the electric terminals in automotive wiring! DIN is short for Deutsches Institut für Normung (in English, this roughly translates to the German Institute for Standardization - I think)!
And specifically, I'm making a distinction between the 2 x types of battery voltage that are possible in a car -these being:
- Battery Volt that does NOT depend on the ignition switch position (i.e. Hard Volts) - This is called Terminal 30 (T30)
- Battery Volt that ONLY appears when the ignition switch is NOT in the OFF position - This is called Terminal 15 (T15)
So, my wiring diagram says that the power supply for the RLS should be type 1 above (i.e. T30) -it should NOT be type 2! As a general response to your question Where do I get T30 12V?( is that from harness that goes in to light switch for headlights?), it really doesn't matter. I suggest that you grab a multi-meter and with the ignition switch in the OFF position, find a "Hard" +12 V wire/termination.
Yes, the rotary light switch harness does have a T30 supply - see my wiring diagram below
So - as shown, the wire on pin #8 (red/white on RoW model mk7s) is a T30 supply .But I suggest that you confirm this status (with a multi-meter) on your car before making the connection.
As for your "long-code string" question - I don't have any info about your 5Q0937084CN central electric module - but based on your words, I suspect that this module does NOT have an active long-code. You can check this by selecting Long coding in the screen below:
If the value of the long-code in this module is a zero-string - then the "long-code string" is inactive. In this likely scenario, enabling the LIN facility for the RLS is done with the following adaptation channel setting: - Assistance light functions-Regen_Lichtsensor > LIN_REGEN_LICHT_SENSOR
Also, you say that this car previously had a "Chinese version light sensor" - it's not clear, but check the following adaptation channel:
- Außenlicht_uebergreifend-LDS_mit_AFL > Yes
And finally, don't forget that an OEM style RLS will have its-own long-code string. I'm not sure how the Aliexpress unit is pre-programmed - but you can access the RLS's long-code by selecting Subsystems in the screenshot above
Don
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Post by prefatcher on Mar 15, 2023 20:41:07 GMT
Thank you for the explanation, I will double check it with multi-meter with my agnition OFF for T30 voltage on rotary light switch harness (PIN 8). About long-coding, only available coding through modul 09 (central electric) in my case is through raw byte/bite format so your suspicion was correct. I will check and enable both values through adaptation channels if they are not enabled already: - Assistance light functions-Regen_Lichtsensor > LIN_REGEN_LICHT_SENSOR - Außenlicht_uebergreifend-LDS_mit_AFL > Yes I have also find some instructions on enabling light/rain/humidity sensor on golf 7, are this steps necessary as well when retrofiting it ?: Activating the light, humidity, and rain sensor on a Volkswagen Golf 7 using an OBDeleven device involves several steps. Here's a general overview of the process: Connect your OBDeleven device to your car's OBD-II port and launch the OBDeleven app on your smartphone. Tap on "Apps" from the bottom of the screen and select "Module". Scroll down to "09-Central Electronics" and tap on it. Tap on "Coding". Scroll down to "Byte 18" and select it. Tap on "Bit 4" to activate the rain sensor. Scroll down to "Byte 19" and select it. Tap on "Bit 1" to activate the humidity sensor. Scroll down to "Byte 19" and select it again. Tap on "Bit 3" to activate the light sensor. Tap on "Do it!" to apply the changes. Wait for the coding to complete and exit the app. I also find some information regarding coding on other forum: www.golfmk7.com/forums/index.php?threads/light-rain-sensor-retrofit.322687/I can see you were helping with coding there as well but that was through VCDS with which im not really familiar with. |
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Post by dv52 (Australia) on Mar 16, 2023 0:56:48 GMT
hmmm...... I don't understand those instructions!!
And in any event, those instructions will only work on a central electric module that has an active long-code string. As I said, I suspect that your module has a zero-string - if so, DON'T make the changes to any Bytes/Bits.
Also, I had forgotten about the Humidity component of your new sensor. To tell a central electrics module (with a zero-string for its long-code) to start operating a humidity sensor, change the following adaptation channel: - Assistance light functions-Humidity sensor > installed
Don |
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Post by prefatcher on Mar 16, 2023 19:47:53 GMT
Okey.
Thank you for your instructions if I will have any problem regarding coding I will come back to you.
Now we wait for the sensor to arrive.
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Post by prefatcher on Mar 21, 2023 19:26:26 GMT
dv52 (Australia) , Im reporting back, today the light sensor has arrived and I have succesfully installed it but there is always but. After removing the rearview mirror and plastic black covers I was actually surprised that my car actually has some kind of sensor installed. My guess would be that it is only rain sensor or humidity, light for sure not because my car didnt have automatic headlights or LH/CH option. I just switched the one already installed with "new" one so I didnt have to deal with wiring it which was a relief. After that I had to make a connection with light auto switch (PIN 2) to BCM (connector C PIN 16):   Every thing went well switch was working as well (also no Error on dash when using AUTO headlights):  Now to coding, I followed your instructions on enabling all the necessary things: 1.) Assistance light functions-Regen_Lichtsensor > LIN_REGEN_LICHT_SENSOR 2.) Außenlicht_uebergreifend-LDS_mit_AFL > Yes 3.) Assistance light functions-Humidity sensor > installed But here is where the problems accure: When i go in Central electric (09) - sub-systems there are 2 choices:  - G397_RLFS: Which is probably newly installed RLFS sensor that I installed. - J245 PS73.404: I would guess this is the old sensor which was installed before but idk why is it still in the option list. I opend "G397_RLFS" which has the following:  Also sensor information:  Nothing works as it should: - Light sensor doesnt switch from daytime lights to normal as it should - tryed to shine light on it (I also enabled CH function which works, LH doesnt), - My wipers stoped working, front completly dead, rear works fine. Only after physically unpluging cable from sensor they started working again. Any help is appreciated.
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Post by dv52 (Australia) on Mar 21, 2023 21:28:44 GMT
hmm..........the other LIN device in your subsystem screen (i.e, J245 PS73.404) is the control module for a sun roof - this car must have a sun roof! I suspect that the existing sensor behind the windshield cover was a Humidity sensor - was the channel value for Assistance light functions-Humidity sensor already set to installed? Your screenshot for "Also sensor information" is NOT the RLFS - it's the data for the central electrics module. So, I don't know the Part Number of the new RLFS - but I'm assuming it's 5Q0-955-547 (guessing really).
Anyhow, from your picture - the value of the long-code for your new sensor is 020063
A common value for the long-code string for a RLFS with the above PN on mk7/7.5 is 00A8DD. I suggest that you try this setting - here is the hexadecimal to Binary conversion table (in OBD11 speak, "1"=tick "0"=no tick):
Byte
| Hex | Bit 7
| Bit 6
| Bit 5
| Bit 4
| Bit 3
| Bit 2
| Bit 1
| Bit 0
| 00
| 00
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 01
| A8
| 1
| 0
| 1
| 0
| 1
| 0
| 0
| 0
| 02
| DD
| 1
| 1
| 0
| 1
| 1
| 1
| 0
| 1
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Don |
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Post by prefatcher on Mar 22, 2023 19:30:43 GMT
Yes, car is equipped with sun roof so you are right, didnt know it goes as "LIN device"... im learning as we go  About your questions: (my answers in blue) I suspect that the existing sensor behind the windshield cover was a Humidity sensor - was the channel value for Assistance light functions-Humidity sensor already set to installed? hmmm yes I checked tha history of changes I made and yes it was already on (in my case Feuchte sensor as humidity sensor), I just confirmed it with not_installed and back to installed.Your screenshot for "Also sensor information" is NOT the RLFS - it's the data for the central electrics module. So, I don't know the Part Number of the new RLFS - but I'm assuming it's 5Q0-955-547 (guessing really).Sorry about that, I can confirm that sensors part number is 81D 955 547 (link to it: www.aliexpress.com/item/4000118866045.html?spm=a2g0o.detail.1000023.15.64f3PKo4PKo4AS&gatewayAdapt=glo2fra )I changed the old value of the long-code from 020063 to 00A8DD with table you provided :
 Automatic wipers started to work which is great I only had to enable them in settings after:  But light sensor is still not working I double checked if everything is enabled:   Außenlicht_uebergreifend-LDS_mit_AFL was changed to yes as well: 
Im a little worried that maybe my car doesnt support this sensor  Any help is appreciated. |
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Post by dv52 (Australia) on Mar 22, 2023 22:34:32 GMT
"Im a little worried that maybe my car doesnt support this sensor" Maybe? I know nothing about your 81D 955 547, alas!!
I'm ALWAYS wary of NON-OEM parts. I acknowledge that buying from these suppliers is far cheaper than sourcing the part from VW directly - but forums are awash with incompatibility problems from NON-OEM parts suppliers.
Rather than going NON-OEM, my preferred approach when seeking a cost-effective purchase is to buy a genuine part from a wrecker yard. Yes, there is the risk that the part is faulty - but IMO, this risk is lower than the incompatibility risk from NON-OEM suppliers (plus wreckers will generally honor a purchase if the part is faulty).
I would suggest getting advice from the seller - but I suspect that a response from aliexpress will be problematic!!
As I said in my previous reply, the "normal" value for a genuine RLFS (PN 5Q0-955-547) is 00A8DD. Clearly your NON-OEM sensor is different (I have no idea in what way the Aliexpress unit is different).
Maybe try turning-ON the the software switch which is called rain light function on the OEM sensor (this switch is normally left in the OFF position on the OEM unit). The software switch is on Byte 0, Bit 1 - tick this box. After the change, the long-code string on the RLFS should be 02ADDD
Don
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Post by prefatcher on Mar 23, 2023 15:26:17 GMT
hmmmm today when I was on my way home something caught my eye. While i was sitting in traffic I saw a reflaction in car infront of me that only my "DRL were ON" while switch in AUTO position. When I arrived home I double checked it and they were really ON, after parking my car in the garage, suprise, normal lights came ON! so i guess light sensor works as well!!! When I was illuminating phones flashlight yesterday it didnt switch so I dont know if it is my phones flashlight too weak for sensor to sense it or does it have to be "natural day light" but would doubt that so every thing works!!! I havent changed nothing from yesterday so value of the long-code from default 020063 to 00A8DD worked! dv52 (Australia) , thank you so much for you help with everything, you the man!!! I hope I wasnt hard to work with  p.s: I spoke with seller of the kit I bought and he gave me following instructions (I havent tryed them but they might help some peopel in the future, english is a little bad because Its automatic chat translation "Alibaba chat Translation" change at your own risk): Step 2: Select 09 central electrical system → 16 allow entry → input login code 31347 → execute, select 10 match. Search for "AFL" and change the value from No to Yes with the option "Aussenlicht_uebergreifend-LDS_mit_AFL" as shown in the figure. The purpose of this step is to turn on the automatic headlight switch. The automatic headlight switch will report lighting failure because this matching item is not set. Step 3: adjust the encoding value. Select 09 central electrical system → code. Select the option with RLFS from the drop-down list. There are two configurations that you can choose from: 1. The configuration is 00006E. I have seen Magotan, Tiguan L, Golf GTI and so on, which are the factory parameters of high configuration. 2. The configuration is 07006E, which adds high-speed automatic headlight turning on and automatic window closing in rainy days compared with configuration 1. Here, these two functions are emphasized. The speed of high-speed automatic headlight turning on is 140 km/h, while the automatic window closing in rainy days can only close four doors, but cannot close the sunroof. Step 4: configure the sensitivity. Select 09 central electrical system → 16 allow entry → input login code 31347 → execute, select 10 match. Find the option of "lichtsensorempfindlichkeit", generally set it as the standard, of course, you can also adjust it according to your feelings. The following are the matching items for the CH/LH: (1)Comfortable lighting - Coming-HomeVerbausstatus- set to automatic (2)Comfortable lighting - Menuesteuerung ComingHome Werkseinstellung - set to active (3)Comfortable lighting - MenueeinstellungCominghome home lighting time 15 s
(4)Comfortable lighting - Coming Home Leuchten low beam
(5)Comfortable lighting - Coming-homeEinschaltereignis selection Driver door activation home function default Driver door
(6)Comfortable lighting - MenuesteuerungLeaving-home Zeit per BAP off-home lighting time 15s
(7)Comfortable lighting - Leaving-HomeVerbausstatus- set to enable (8)Comfortable lighting - MenuesteuerungLeaving-home Freischaltung per BAP - set to active (9)Comfortable lighting - Helligkeitsschwelle Infrarot-Messung changed to 12lx (10)Comfortable lighting - Helligkeitsschwelle Forward-Messung changed to 46400lx "Note that when you manually fill in these two items, you only need to fill in the numeric part. lx is the unit of illuminance and does not need to be entered." (11)Change access control 2-Regenschliessen_art to permanent (permanent) (12)Access control 2- Regenschliessen_ein_aus is not activated and changed to "activated" (13)Access control 2- Menuesteuerung Regenschliessen is not activated and changed to "activated" Cover the sensor, after locking the car, unlock the car and turn on automatically, leaving home. |
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