Are The Interior Lights Of Mercedes-Benz On A Canbus?

Interior lights on vehicles are linked to the vehicle’s CANBUS systems, which prevents warning errors. It is recommended to use CANBUS bulbs, which this kit consists of. Modern cars have lamp monitoring control units, not CAN bus lamps, so LEDs should be fitted with these.

Many European vehicles, including Audi, Mercedes-Benz, BMW, Range Rover, and Jaguar, use a CAN-bus (controller area network) system that allows for fast communication between the interior (or chassis) CAN wiring. CANBUS light bulbs prevent error messages and are designed with an internal resister that allows a direct replacement for standard halogen bulbs.

Indoor lights do not throw warning errors, but they are still linked to the vehicle’s CANBUS systems. It is always advised to use CANBUS bulbs, which this kit consists of. The embedded resistor in Canbus LEDs is very hot and may burn the board sooner or later. Interior lights are not connected to the SM, so they won’t throw any errors.

AZN Optics offers a 20Pc Canbus Error Free Super White 6000K Car Interior LED Light Kit specifically packed for 2008-2012 Mercedes-Benz E350 Equipped with Advanced Computer system. The kit is 100 Canbus Error Free and plug and play, with no modification needed. Product pictures are for LED bulb type reference only.

Upgrade your Mercedes Benz with our LED Interior Light Canbus Kit, designed for a perfect fit and seamless integration, offering a modern and stylish interior lighting solution.


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Are The Interior Lights Of Mercedes-Benz On A Canbus?
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Rafaela Priori Gutler

Hi, I’m Rafaela Priori Gutler, a passionate interior designer and DIY enthusiast. I love transforming spaces into beautiful, functional havens through creative decor and practical advice. Whether it’s a small DIY project or a full home makeover, I’m here to share my tips, tricks, and inspiration to help you design the space of your dreams. Let’s make your home as unique as you are!

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26 comments

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  • Hey boss will unplugging the connectors 1 at a time and attempting to atart it still help you find the bad module if the CAN bus cards are possibly bad from water damage, like corrosion on solder points always concentrated at the 3 wire connectir on one end of all 3 CAN bus cards( 2 brown 1 white) Or do i have to buy a new one to even do the test of unplugging the connectors 1 at a time Oh and thank you for your time and your very valuable expertise

  • Perfectly simple and a great idea. When its working. I get it totally. But in the real world the overburden of “convienence” features on modern vehicles has put literally hundreds of thousands of otherwise good vehicles into the scrap yard. Of course they are technically “repairable” its just that at dealership labour rates it exceeds the value of the vehicle. For transportation most of these features are pure fluff….do you really need “memory mirrors”. Remember how hated single strand xmas tree lights were back in the day ? One light go out you’d spend hours trying to find the bad connection…same deal hear. It forced us to throw out the entire strand and buy a new one. Connections in a vehicle just cant hold up over time….moisture..vibration..temperature extremes take a toll starting in 5 to 10 yrs then stuff starts to “act up” or not work at all. Prior to retirement from LKQ we saw many…an absolutely beautiful Mercury Sable…zero rust perfect black paint…loaded…power everthing..leather…the good alloys…duratec V6…ABS…everything scrapped with only 134,000Kilos. But everytime the owner spent big$$$$$ something else went. The last straw was the ABS light came on ….he was done…..stripped and crushed.

  • Masterfully broken down to the origin and foundation! As you’ve already said, digging all the way down the complex hole of EVERY nuance in CAN communication is often unnecessary to properly diagnose. I’m still a “kid” as far as my time doing diagnosis and repair, but in 4 yrs I haven’t been wrong yet following this simple & logical approach. Understand the systems you’re dealing with!! Thanks Lou ✌️🤘

  • Great info thanks for the article …i have an issue with c200 kompressor 2008 petrol …overhead console not working no lights no vanity lights and ac blowing hot air on scanning got a code C14200 ( communication with rear signal acquisition and actution module has a malfunction ) what might be the issue as overhead is controlled by internal can system …sometimes it work intermittently ..overhead panel lights work on door opening and ac also starts working and then again it won’t work any help? thanks in advance

  • Thank you for this great article, we have a Mercedes W219 with an ABS/ESP module replaced (used one with identical numbers) we have a pass through Xentry system, as well as a clone good quality system, cannot do anything with a Pass through, the clone system won’t allow programming,as it detected an on-line software, but we don’t have an on-line account,asides it is a clone! how can we reprogramm the replacement module? is there other way’s like with Galletto V54, or a kess V2 systems to read the software and copy and paste it to the replacement ? Thanks in advance for your kind input. 🙂

  • Man, where were you 3 days ago, I just dropped off my can at a shop. Took my 04 C230 Kompressor through a drive-through car wash and parked to dry off the remaining water droplets. Went to start it back up and no crank. Wakeup, EIS, cluster, and steering wheel unlock all work, but just no crank when turning the key. Checked all fuses and relays (good). Battery voltage (good). Put on my scanner and got these fault codes. 201D-001 Cataytic converter Effect is insufficent (P0420) (**already had this one) 2041-001 N80 (steering column module)CAN/signal interruption 2041-008 N80 (steering column module/The can message implausible 202D-001 N80 CAN message from control module AAC/TAC/CAN signal interruption 202B-001 CAN message from control modules EZS/CAN signal interruption Cleared the fault codes, disconnected the battery for about two hours, and connected everything back up. All codes are gone and will not replicate because I can’t talk to any of the modules. I accidentally tripped the SRS while inspecting the clock spring and angle sensor (steering wheel).. couldn’t clear that code because there was no communication for the scanner to see the error. I’m at a loss on this one.. There was no water anywhere that I could see.. but the problem happened after the wash and had never happened before.

  • I couldn’t find the website online, but i got a 2002 Mercedes C32 AMG (W203) where my steering column module won’t communicate via OBDII. After removing the module, found the CPU transistor on the module was faulty. I’ve had the transistor replaced but after I reinstall it to the car, the CPU transistor fails again. I confirmed I’m not overcharging the system. The alternator is putting out 14.1v when first started, then 13.8 after the battery is recharged. Any ideas what the issue might be?

  • I could use help with my 2011 GL450. Skylight was left open at night and torrential rain flooded interior. Now car will start but IC lights up with error codes. Several OBD codes with no data from IC, ESP,ME,Trans,CGW,Airbag,ISM,TPM. Won’t go into gear. 200k miles, but was running great and otherwise in very good condition. Is it likely just the SAM under passenger seat? Trying to decide if it’s worth trying to fix?

  • Please I have an issue I was driving my car and then while driving it all the lights on the instrument cluster came on, all lights no single one left out and then car won’t move again while it’s still on. I moved from drive to park then drive to park still no movement then I turned it off and since then it never turn on again. Could you know what’s wrong with it please

  • Hi ! Thanks for your articles . In a gl x164 there is an eis and central gateway .which one is the master to transfer infos from different modules . The car starts fine .the c can is good .com to central gateway is fine but no com with eis cluster and all comfort modules ( water intrusion ) .I think there is a bad module who shut off the com to the eis but again the central gateway is good but comfort can is dead . Thank you

  • Hi, I’m from Costa Rica, my English is very basic! I have a Ml 320 2002, w163, in limp mode, it will be bas esp on …. the problem is that the Mercedes scanner does not connect with the modules … it only gives “F” in TCM (EGS), ECM, ESP, AAM …. the car starts and everything is fine, it just doesn’t go over 2nd gear! Could it happen that a damaged module causes an error in the communication of the others ??? …

  • Dont know if this is beyond your knowledge or not, but do all modules communicate with the cgw or is that only for communication between the 2 different circuits? Reason i’m asking is because i want to hook up steering wheel controls of a r171 into the r170 canbus and was wondering if i could get those working on my radio that can handle those canbus inputs. But the r170 never came with steering wheel controls, so i dont presume a cgw knows how to handle those signals

  • Great article, I have an f10 starts then cuts off immediately, I got codes for short circuit to ground on terminal# 15 (1 2 3 N and WUP) also flexray not initiating at the gateway, ohm resistance is measuring 61.02 between 6 and 14 and voltage is positive on pin 16 would the issue be a wire harness or a module failure

  • Think I might have shorted my CGW on my w204 c250. Forgot I had engine running when connecting car to Xentry to try and change some settings on a virgin amg IC i just got.. Now Xentry isn’t able to auto detect VIN when connecting, and when trying to communicate with IC it says unable to communicate, says possible cause is Power Supply, or unit that isn’t supported, however I was able to connect the IC before it stopped detecting VIN, communicating with cluster etc. Is a replacement CGW module expensive? I know things would require codding, just don’t know exactly how much of a hit i’m looking at If the CGW module is in fact toast. Subbed.

  • I have a 2003 bmx x5 that’s telling me that the dme has timed out! I can read all the other modules in the car but I can’t connect with the dme! It has been swapped out due to getting wet but I can’t read it from the obd port! It has 2.5 volts on the can bus wires but I can’t get it to come back on line with the rest of the system…. What’s the process to get it back on line??? Re-sync it???

  • It was great article man, But I would have a question to you about the wiring system of cars THAT I often see that Startor demands CAN lines. But as we know the Starter needs just 2 hot lines that one of them is always hot and another one is hot through relay. And why CAN lines for starter? P.s- I talk about mercedes cars on WIS/ASRA program

  • hi, cuestion, do we check continuity or resistance on hi/low bus circuit? i will be working on a drivers seat problem, shop says drivers seat wont communicate w scan tool, and when passenger seat is operated both seats move, one forward one backwards at same time, so i will start with checking the hi/low bus, but which to know resistance specs. 2016 Mercedes S550, will be looking for Bus circuit board (L) location.

  • Thank you for posting your YouTube articles so we can learn from you. I appreciate you doing so! I could really use your help and hoping you might have an idea or answer for the following. My W211 2003 E500 Mercedes has a continuous running fan (the car will overheat if I disconnect fan), SRS light and check engine light on, and my front seat controls do not work, and air-matic sport button near the gear shift doesn’t work (at least no red light indicator). The car will start and drive. Please help. Thank you in advance and thank you again for posting your articles!

  • I am doing m111 engine w202 1998 model turbo project. I have a canbus in my vehicle. The standalone ecu I bought also has canbus feature. But since I do not know the canbus codes of the vehicle, I do not know how to code the indicator, air conditioner, ezs, starter and other features. Would you help me with this topic

  • Hi, Nice explanation. I have a 2007 Gl450 and there is no audio/sound from the radio/cd. The command turns on fine and appears to be running fine both on radio and cd but there is no sound from any of the speakers. Before there would be sound for about a min when starting in the morning and then nothing. Now there isn’t any sound at all. I pulled almost every module in the car and opened it up to check for water damage–none found anywhere. Only one fault code: “incorrect can message from control unit n80” which is the steering control module. I replaced the clockspring and the module above the clockspring with OEM units from the dealer. Still there is no sound. I’m guessing the fault might be in a wire or a ground connection somewhere. Any thoughts? Where can I get the wiring diagram for the CAN bus for this car? Thank you.

  • Mastah Lou🙏…i think you officially answered situquestion..situation /question….I have 2003 e500 seems like it has interment connection issues..p0600…I have icarsoft mbii and Zurich obdii several days after getting home I scanned car for dtc’s two came up in ecm p0600 and p0701 I think mass air flow … with cel and lot of stored codes from low voltage and rear Sam issues which had been repaired ..and two marker lights out I went out to clear all codes and start fresh. Yesterday when I went out attached mbii scanner it read all module codes,however when I went to ecm it said that it did not know the codes..it had 11 codes in ECM..I couldn’t erase or cleae any thing i in that module i was doing this while car is running….the tcm did not show a any code info for a soft limp mode car was in 3rd gear.. until shut of and on . I turned car off plugged it n Zurich thirteen it read codes and allowed clearing of the mass code but p0600 remained in pending..when I went to CGW it read no dtc’s even though car had error in in drivers Sam marker lights abc and others

  • I broke the plastic cover lens on the front dome light and cracked it.. it was literally so tight and wouldn’t come out 😭😭 Idk what to do now. I think I have to buy a whole new unit just to replace that 1 singular plastic cover lens and they’re expensive. If yours is hard to take out too, I would just leave it alone it’s not worth it !!!

  • So kudos, I think You did A great job with showing how to install all the LEDS, I Basically went on Ebay and got 20x ULTRA white LED bulbs for around $15…… But my rear sedan dome light takes 3, 2 of the 168/194 Bulb and then 1 center, I can get back but I was pretty impatient so I went to Advanced Auto and bought the 1 Buld LED I needed, it fit perfect, super bright, it’s the main light that comes on when doors are unlocked,locked, it’s a 6418 WHITE LED. Tube bulb with silver arrowheads on each end… Was like $8. Anyways, I replaced Every light, trunks, glovebox, overhead vanity dome, rear dome=3, flip down driver/passenger mirror lights,, SO I was so Pleased, How could everything go this easy and smooth with NO ERRORS…. WELL, THEN CAME THE LAST 2 BULBS. I HAD THE the bulbs, the same ones exact ones I used for the rest of my car, however when I went to replace them I kept getting wierd things happening.. So at first I thought maybe my bulb was bad, but I still had like 10 left, then I thought the door was open too long, maybe it timed out… No, that’s not it, so I took out both of my LEDS, AND TRIED THE FACTORY again, well I was so happy to see that they both turned on and I Didn’t blow a fuse. So then I installed 2 Phillips LED WHITE Bulbs while the factory were still lit… so YES passenger stayed on!, now on to driver side…. it was still on, so I removed factory and put in the other Phillips LED, WOW,So now both are lit so closed my drivers door, and low and behold lol, now I have 2 LED under my feet factory area, and they first started blinking on/off every 5 seconds.

  • Rear view mirror lights cannot be replaced. They are wired to circuit board. Just wanted to share so no else goes through the hell I did taking it apart and putting it back together. Aside from that thanks flexx for this guide. Very useful and I love your view on mods. This article and many more from you are super helpful! Cheers!

  • I tried replacing the lights that are under the dash, the ones that light up the floor of the driver and passenger side, but when I do it, I replace one side (passenger), it lights up…then as soon as I move on to the driver side and replace that one, the lights stop working. I’m guessing it has something to do with the voltage. I bought another set that claims to be error free, hopefully that works. BTW, I thought the same way when I was looking at the rear view mirror lights. Looked complicated and felt more like I’m gonna break something if I tried 😂

  • Hey flex, do you know where the fuse for the front center peice lights is? The main lights that automatically turn on when you open the door, i was trying to install rgb leds and i have short-circuited them and heard a slight pop noise, I dont know if the fuse is there inside de centre piece or is it in one of the fuse boxes !! Thank you

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