dec
New Member
Posts: 3
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Post by dec on Nov 8, 2024 20:57:55 GMT
Hello, My left headlight shows an AFS Error, C108131 - Left headlamp power output stage - No signal I've replaced the bulbs, and have also replaced the AFS Module with a new (non-valeo) part as well as swapping modules between the headlights and it's not made a difference. To check the wiring I Swapped the headlight onto the right side and the error moved with it, so I've ruled out an external issue. I have attempted to re apply module 55 coding to see if the left headlight module shows up again but again no luck. Before I go and find a replacement headlight is there anything else worth checking, trying or replacing on the headlight? Cheers Error: C108131 - Left headlamp power output stage - No signal |
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Post by dv52 (Australia) on Nov 9, 2024 20:17:32 GMT
Hmm.......... seems like you have done the correct tests - my only question is where did you source the replacement module? If it's new in the sense that it's never been used - maybe it's lacking a dataset. If it's 2nd-hand, maybe it has the wrong dataset - was the donor car the same as this car?
To check if the replacement module has the correct dataset - install it into the right-side headlight fitting
Don
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dec
New Member
Posts: 3
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Post by dec on Nov 9, 2024 20:39:02 GMT
dv52 (Australia) Hi, Its a new module Esen SKV Part so not original Valeo, but struggled to find one I did attempt to re apply coding and according to log its reapplied long coding but didn't show the Left headlight as a sub module after doing so so was unable to check coding for module. I swapped the module from the right headlight that has no error to the left headlight and didn't have any difference. I then plugged left headlight in to right side and right into left where the error did then move to the right side so I had assumed it wasn't the module. Thinking back, when I swapped it to the Right hand side it had the new module in it and I think the coding was 000000 but when I tried to change it, it throws function not available I think it was.
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Post by dv52 (Australia) on Nov 10, 2024 21:26:55 GMT
dec : Hmmm......... I can't understand what you are saying and because you are unsure what previous diagnostic tests were undertaken, I really can't provide an informed response! Maybe you are not familiar with the term "Dataset"? Think about how VW sells its modules- this car is part of the world-wide range of vehicles that have a MQB platform build. MQB cars span across VAG's many brands including VW, Audi, Skoda etc. Modules with the same part number will fit many of these brands. The way that these modules accommodate the requirements of individual brands is via the Dataset - which is a piece of software in the module that is specific to a particular brand and a particular model. To reduce VAG's costs, these modules are stored in stock without a dataset so that they can be sold to a wider cross-section of cars. I'm not familiar with Esen SKV but usually when you buy a brand-new (meaning never used before) output module - it does NOT have a dataset. When a dealer takes one of these modules from stock - they load the dataset that suits the car into the module as a separate task before installing the module.
It's not clear (to me at least) what equipment was tested in your swap exercise - so I'm guessing!! I suggest that you compare the dataset number in the left and right side modules to confirm that they are the same. The way to do this is as follows:
- In OBD11 speak- Dataset is called Parameter set.
- Fire-up OBD11 software - no need to connect to the car
- On the Home screen, click-on Garage
- Select the car - if multiple vehicles are registered to your OBD11 account
- Navigate to the module
- Go to Information/Advanced Identification on the Module screen
- If the module has Advanced Identification - enter "parameter" into the search box
- Scroll down and and place ticks next to the following entries:
- Parameter set part number
- Parameter set version
- Note the search results
- Repeat for the module on the other car side
Is the Information/Advanced Identification data for the new module on the left car-side the same as the factory module on the right-side?
Don
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dec
New Member
Posts: 3
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Post by dec on Nov 13, 2024 19:04:57 GMT
dv52 (Australia) Sorry i was mixing the Dataset up with long coding. I can check the parameters for the hex55 module (Headlight Regulation). In the sub modules I only have options for the Right (leiMo rechts) which only has options for Info and Long Coding Am I missing something? Parameters for Hex55 are Part number: 5G0036v__ Version: 0021 To try clear up what I've done. Placed new AFS module in Left headlight with no change. Tried AFS module out of right headlight and put into Left headlight (one with error) with no change. Tried to re write Long coding to hex55 Module to see if Left headlight showed in sub modules. It didn't Plugged Right headlight into Left Headlight Wiring connection, Left headlight into Right headlight wiring connection. Where error moved to right side. ( To Eliminate external wiring issue ) I tried the new AFS module in the Right headlight (No error) module was not coded (000000) but when trying to change coding to 2E0000 shown "Function not available" I came to the assumption that is wasn't a Module issue and an issue within the headlight but wasnted to see if there was anything else to try before trying to find a replacement headlight. thank you for the help though. Truly appreciated
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Post by dv52 (Australia) on Nov 13, 2024 21:44:33 GMT
hmm....... again, I'm not sure what has happened - but the output modules for the Headlight fittings are called Subsystems in OBD11 speak!
You can think about the headlight set-up in this car as a master/slave CAN bus arrangement - where the 55 Module is the master module for the AFS and the modules that live in the headlight fittings are the slave modules.
As I've already said, the master module will NOT auto-code the slave modules unless the downstream environment is error-free!
So again, I suggest that you make sure that the new module has the SAME: - part number
- software number
- software version
- parameter-set part number
- parameter set version!
as the factory installed module.
To access the slave module information - do this: - On the Control units screen, select the 55 Module
- Scroll-down the screen to the last option and select Subsystems
- follow instructions in my previous post
Don
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