developer Posted July 19, 2024 Share Posted July 19, 2024 Greetings, esteemed sources of wisdom. I am now in the process of installing C250 AMG W204 (2012) Coupe Diesel FACELIFT headlights onto a PRE-FACELIFT C63 W204 (2008) 4 Door vehicle. Unfortunately, I have encountered an issue with the dipped beam function, which remains non-functional. I kindly want your assistance in resolving this matter. Thank you. Both automobiles use a 14-pin connection, however the C63 utilises 10 pins (1, 2, 3, 4, 5, 6, 7, 8, 9, and 10), whereas the C250 uses just 9 pins (1, 2, 3, 5, 6, 8, 9, 10, and 11). I have successfully linked 7 wires (marked in red) and achieved functionality with the exception of the dipped beam. (WIRING for a 2008 Pre-Facelift 4-Door C63 with W204 Chassis) The user is referring to the headlight of a 2012 facelift model of the C250 W204 Chassis Coupe. Pin 1 - CAN Low is not connected (unknown reason). Insert a pin. Pin 2 - CAN High is not connected (unknown reason). Provide the precise location or identify the exact point on a map. Pin 3 is designated for the side light, sometimes known as the C-Light. The user is now engaged in employment or another kind of productive activity. Pin 4 is designated as Side Light 2 and is normally closed (N/C). Pin 5 is connected to Ground 1. 6 - Xenon Headlamp Pin 6 is functioning properly and is connected to a Xenon Headlamp. Pin 7 corresponds to the high beam function. Pin 8 activates the corner illumination feature, which is designed to turn on when the high beam is engaged. The user is now engaged in employment or another kind of productive activity. Pin 8 functions as an indicator, and Pin 1 also functions as an indicator, and both are now working. Connect pin 9 to provide a 12V power supply to the electronics of the headlight unit. Connect pin 9 to provide a 12V power supply to the electronics of the headlight unit. Pin 10 is connected to Ground 2. The following pins are occupied on the C63 Headlight: 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10. Pins 11, 12, 13, and 14 are not utilised. In all, there are 10 pins in use. The following pins are occupied on the C250 Headlight: 2, 11, 3, 5, 6, 8, 1, 9, and 10. Pins 4, 7, 12, 13, and 14 are not utilised. In all, there are 9 pins in use. I have two remaining connections on the headlight, namely pins 2 and 11, but I am unable to activate the dipped beam. (Whenever I activate the headlights, they immediately go to the high beam setting). To the best of my knowledge, there is a motorised shutter that is somehow regulated to cover the xenon headlight bulb for dipped beam. However, the shutter is designed to only open up for high beam. What is the reason for the constant open position of the shutter? What methods may I use to exert control over it? Quote Link to comment Share on other sites More sharing options...
alpaco45 Posted July 19, 2024 Share Posted July 19, 2024 Is coding required for these and do the ballasts function properly? Quote Link to comment Share on other sites More sharing options...
developer Posted July 19, 2024 Author Share Posted July 19, 2024 Greetings, To the best of my knowledge, the headlight assembly consists of just four lights: a Xenon Headlamp, a Side Light, a Corner Illumination, and an Indicator. All of these lights are functioning properly, indicating that there are no problems with the ballasts. I am seeking a solution for controlling the shutter motor that regulates the intensity of light emitted by the Xenon Headlamp, specifically for switching between high and low beam settings. The shutter seems to be in a fixed open position, resulting in the headlights being always in high beam mode. However, the shutter should be closed to enable dipped headlights and only opened for high beam. You stated coding, but, to my knowledge, cars manufactured in 2008 are equipped with CAN Bus, whereas vehicles produced in 2012 are equipped with LIN Bus. I have just discovered that pin 2 on the facelifted (2012) headlamp serves as the LIN Bus connection. The connection between pins 2 and 11 on the facelift headlamp remains unestablished due to uncertainty over the appropriate components to which they should be attached. Assistance of any kind would be much valued and acknowledged. Thank you. Quote Link to comment Share on other sites More sharing options...
Trevorseaf Posted July 19, 2024 Share Posted July 19, 2024 Can you confirm that the headlights you are installing are specifically designed for a vehicle model that has undergone a significant update? Have you changed the bonnet as well, if that is the case? I am inquiring because the headlights of the facelift version have a distinct form compared to the pre-facelift version. Quote Link to comment Share on other sites More sharing options...
alpaco45 Posted July 19, 2024 Share Posted July 19, 2024 The title of your post was rather deceptive as it indicated that everything was functioning "except for the dipped beam," which led me to inquire about the ballasts. It seems that there is a mismatch between the wire looms, rendering them incompatible. Is it possible to locate wiring diagrams for both automobiles in order to identify and analyse the discrepancies? Quote Link to comment Share on other sites More sharing options...
developer Posted July 19, 2024 Author Share Posted July 19, 2024 Thank you for the responses so far. Indeed, they are definitely facelift 2012 headlights. I had to replace the hood as well. I would want to apologies for providing incorrect information. Firstly, the high beam is not functioning. I have been working on this issue during daylight, which has made it difficult to accurately establish whether the high or low beam is turned on. Furthermore, tonight, after keeping the side lights (C-Lights) on for an extended period, I saw one of them extinguish, then promptly reignite, followed by the second light exhibiting the same behaviour. Does this imply that I must install a capacitor in order to rectify this problem? The user mentioned "DSM 10000." The wiring is not compatible, and I was not anticipating a 'Plug and Play' solution. However, I am now attempting to determine how to make it function, even if I have to replicate a LIM signal, for instance, to activate the high beam. I am seeking guidance on how the high beam is regulated and what specific signal is required. Quote Link to comment Share on other sites More sharing options...
developer Posted July 19, 2024 Author Share Posted July 19, 2024 Is it possible to modify the post title, by the way? How can this be accomplished? Thank you in advance. Quote Link to comment Share on other sites More sharing options...
alpaco45 Posted July 19, 2024 Share Posted July 19, 2024 Hence, I proposed the need of using comparative wiring diagrams to identify the shared elements between the new headlights and the wiring system. This project seems to be fairly substantial! Quote Link to comment Share on other sites More sharing options...
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