MBWorld.org Forums - C-Class (W204) https://mbworld.org/forums/ 2008 - 2014: C180K, C200K, C230, C280, C300, C350, C200CDI, C220CDI, C320CDI en Tue, 26 May 2026 23:24:09 GMT vBulletin 60 https://mbworld.org/forums/images/misc/rss.jpg MBWorld.org Forums - C-Class (W204) https://mbworld.org/forums/ W204 3.0 Petrol Intermittent No Crank + Fuel Gauge Drops During https://mbworld.org/forums/c-class-w204/927984-w204-3-0-petrol-intermittent-no-crank-fuel-gauge-drops-during.html Tue, 26 May 2026 21:42:00 GMT Hi everyone, I have a Mercedes-Benz W204 C-Class (2008, 3.0 petrol engine) and I’m experiencing an intermittent starting issue that I can’t clearly diagnose. The issue happens occasionally: ... Hi everyone,

I have a Mercedes-Benz W204 C-Class (2008, 3.0 petrol engine) and I’m experiencing an intermittent starting issue that I can’t clearly diagnose.

The issue happens occasionally:
  • I turn the key to start the car
  • Sometimes I only get a single “click” or the engine turns just a fraction (about one rotation) and then stops
  • On the second attempt, the car starts normally without any problems
This does not happen every time, only occasionally (it has happened twice within a few days).

Another important symptom:
  • During one of the failed start attempts, the fuel gauge suddenly dropped to empty and the low fuel warning light came on
  • After the engine started, the fuel gauge returned to normal within a few seconds
The battery is new (2–3 weeks old).

Once the car starts, it runs perfectly with no warning lights or drivability issues.

Possible causes I’ve seen mentioned include:
  • ground/earth strap issue
  • battery terminal connection
  • starter relay or SAM module
  • starter motor beginning to fail
Has anyone experienced the same symptoms on a W204 3.0 petrol?
What was the actual cause in your case?

Thanks in advance. ]]> C-Class (W204) gmmccfn https://mbworld.org/forums/c-class-w204/927984-w204-3-0-petrol-intermittent-no-crank-fuel-gauge-drops-during.html <![CDATA[SQUEAKIEST DOOR HINGE EVER 15' coupe]]> https://mbworld.org/forums/c-class-w204/927969-squeakiest-door-hinge-ever-15-coupe.html Tue, 26 May 2026 16:15:29 GMT So my door hinges have been squeaking for a while now, at first I tried lubricating them with some white lithium grease, which kinda worked but it would still squeak a bit. But after some time goes... So my door hinges have been squeaking for a while now, at first I tried lubricating them with some white lithium grease, which kinda worked but it would still squeak a bit. But after some time goes by it just goes back to VERY squeaky. Its pretty annoying lol .
I will try to blast more white lithium grease to see what happens but I just wanted get some thoughts from you guys, has anyone experienced this ?
Here are 2 videos of a before and after the white lithium grease , thanks in advance!

BEFORE :
AFTER :

]]> C-Class (W204) david.ib4576 https://mbworld.org/forums/c-class-w204/927969-squeakiest-door-hinge-ever-15-coupe.html AC Issue with Compressor being shutdown https://mbworld.org/forums/c-class-w204/927903-ac-issue-compressor-being-shutdown.html Mon, 25 May 2026 17:47:57 GMT Ok, I am sick and exhausted of this climate control at this point. This is one of 3 w204 c300s (2009/2012/2014). It is the 2014, in case that is relevant, and the only one to ever have anything more... Ok, I am sick and exhausted of this climate control at this point. This is one of 3 w204 c300s (2009/2012/2014). It is the 2014, in case that is relevant, and the only one to ever have anything more than a coolant recharge issue. I have the classic issue with the climate control doing the fast blink diagnostic and eventually turning off power to the compressor and going into a slow blink. For the record, I started this journey by checking all the fuses, except the pre-fuse, the charge level of the coolant. Next was the evacuation of the coolant, and replacement of the coolant pressure sensor, next was the replacement of the compressor. I now have a cleaned system, new pressure sensor and a rebuilt compressor that ended up being new from partsgeek. By the way the compressor is of course the one with the magnetic coupling. The only thing weird was the wire connector was a wider 4 prong, so I moved the old cable to the board/selenoid to the new one. It has been recharged with coolant. I have watched the values in the computer and can see the climate control do the fast blink diagnostic, see the amps to the compressor go to 0.98-1.0 while it does startup, then watch it go to 0 and the slow blink when it decides to shut everything down. I am at a complete loss, my next door neighbor is an actual Mercedes Tech and he has nothing to add at this point. The only thing that is off is the cabin sensor with the overhead apparently is broken, but I checked the other 204s and they all have the same bad value in that field. At this point any advice other than have you plugged it in or have you tried turning it on and off would be welcome input. I have haunted this board for years and the advice in here has helped me out tremendously, but never felt I had much to add. This has made me finally make an account and seek out the advice of experts. Please HELP! ]]> C-Class (W204) ColonThorn https://mbworld.org/forums/c-class-w204/927903-ac-issue-compressor-being-shutdown.html WE DID IT - RESOLVING PREMATURE TIRE WEAR https://mbworld.org/forums/c-class-w204/927866-we-did-resolving-premature-tire-wear.html Mon, 25 May 2026 03:56:16 GMT


"CLICK HERE" Mercedes Catalog 1968 to 2026 !

]]> C-Class (W204) K-Mac https://mbworld.org/forums/c-class-w204/927866-we-did-resolving-premature-tire-wear.html COOLANT LEAK !!! https://mbworld.org/forums/c-class-w204/927798-coolant-leak.html Fri, 22 May 2026 22:09:37 GMT So I've had a coolant leak for a while but it was really slow so I would just top it off but but it seems to be leaking at a faster rate now , mechanic sent me this picture when i took it for an oil change but he couldn't find the location in the limited time he had. I'll probably have to take it back but I just wanted to see if anyone else has experienced something similar.


Thanks for any comments in advance ! ]]> C-Class (W204) david.ib4576 https://mbworld.org/forums/c-class-w204/927798-coolant-leak.html 722.9 Transmission Question https://mbworld.org/forums/c-class-w204/927772-722-9-transmission-question.html Fri, 22 May 2026 02:21:27 GMT I'm chasing down a TCC lockup issue in my 2012 C300 (A89 option). I'm trying to determine if the check ball at the end of the transmission input shaft (torque converter side of the trans) should move freely. I'm guessing it should, but mine is stuck pretty solid. I got it to move a bit, but it seems tighter than it should be if it was supposed to be free and now I'm second guessing myself. Not sure why there would be a check ball at the end of the shaft if it wasn't supposed to move?

I'm also making a guess that this is what allows the TCC lockup clutch to bleed off pressure, and if it's supposed to be free and isn't that might explain my issue.



Hive mind engage! Let me know I'm wrong! ]]> C-Class (W204) dorfer21 https://mbworld.org/forums/c-class-w204/927772-722-9-transmission-question.html New to the forum https://mbworld.org/forums/c-class-w204/927710-new-forum.html Wed, 20 May 2026 10:51:32 GMT Hope you all are having a great day... im not had to pull the engine on my 2010 c300 3.0 wanted to see if I could get any pointers on the disasembly and any tools i would need for this task thank you... Hope you all are having a great day... im not had to pull the engine on my 2010 c300 3.0 wanted to see if I could get any pointers on the disasembly and any tools i would need for this task thank you all ]]> C-Class (W204) Crz92 https://mbworld.org/forums/c-class-w204/927710-new-forum.html Bring Your W204 into 2026 – Android Screen with Wireless CarPlay for Mercedes C-Class https://mbworld.org/forums/c-class-w204/927637-bring-your-w204-into-2026-o-android-screen-wireless-carplay-mercedes-c-class.html Mon, 18 May 2026 07:46:55 GMT Hi W204 owners,

We’re CarpuTech, a professional manufacturer specializing in premium infotainment upgrades for Mercedes-Benz vehicles. If you’re driving a Mercedes-Benz C-Class W204 (2011–2014) and still using the original system, this upgrade is one of the best ways to modernize your interior without losing the OEM Mercedes feel.

We’ve developed an 8.8" Snapdragon 665 Android 14 touchscreen system specifically for the W204 platform — combining smooth performance, modern connectivity, and full factory integration.




👉 Product link:
https://www.carputech.com/products/m...radio-headunit

Key Features:
  • 📱 Wireless Apple CarPlay & Android Auto – navigation, music, calls, and messages made easy
  • 🚀 Snapdragon 665 processor – smooth and responsive daily performance
  • 🧠 Android 14 system – install apps like YouTube, Google Maps, Spotify, Waze, Netflix, etc.
  • 🖥️ 8.8" HD touchscreen – clean OEM-style upgrade with improved usability
  • 🔄 Retains original Mercedes system – switch between factory interface and Android system anytime
  • 🎮 Supports factory controls – steering wheel buttons and original controller remain functional
  • 🎵 Works with factory audio system – maintains OEM sound quality
  • 🎯 Plug & Play installation – no cutting wires or complicated coding required
This upgrade is ideal for W204 owners who want to keep the timeless design of the car while adding modern infotainment features that make daily driving much more enjoyable.

The W204 still has one of the best classic Mercedes interiors — this simply gives it the technology it always deserved.

If you have questions about compatibility, installation, NTG versions, or real-world use, feel free to ask 👍

— CarpuTech Team

]]> C-Class (W204) carputech https://mbworld.org/forums/c-class-w204/927637-bring-your-w204-into-2026-o-android-screen-wireless-carplay-mercedes-c-class.html HnR lowering springs https://mbworld.org/forums/c-class-w204/927581-hnr-lowering-springs.html Sat, 16 May 2026 18:56:10 GMT I recently installed my rear driver side HnR lowering spring but I’m having issues with bolting back in the sway bar end link. I’m not sure if it’s just one you gotta muscle and push it down so it... I recently installed my rear driver side HnR lowering spring but I’m having issues with bolting back in the sway bar end link. I’m not sure if it’s just one you gotta muscle and push it down so it lines up or if there’s a trick or if I went wrong in the reassembly process ]]> C-Class (W204) quinng https://mbworld.org/forums/c-class-w204/927581-hnr-lowering-springs.html <![CDATA[W204 Key fob won't open and close. The car won't start.]]> https://mbworld.org/forums/c-class-w204/927433-w204-key-fob-won-t-open-close-car-won-t-start.html Tue, 12 May 2026 19:15:41 GMT Hi
Wondering could anyone point me in the right direction.
My key fob won't open and close doors. When I try to start the car the dashboard lights are dead. They come on when I open the door but the dash goes dark after 30 secs.
The key turns in the ignition but nothing happens.
The main battery is good and the key fob appears to be working ( New battery. Red light flashing and IR can be seen on camera)
It appears to be two different issues. I've read the key fob has notthing to do with the starting of the car.
​​​​to.Thanks in advance for any advice. ]]> C-Class (W204) Athienou https://mbworld.org/forums/c-class-w204/927433-w204-key-fob-won-t-open-close-car-won-t-start.html w204 c300 swap https://mbworld.org/forums/c-class-w204/927422-w204-c300-swap.html Tue, 12 May 2026 14:14:03 GMT hello, I want swap m273 in w204 c300. I need some advice that swap. please share your experience. everything about swap. hello, I want swap m273 in w204 c300. I need some advice that swap. please share your experience. everything about swap. ]]> C-Class (W204) Giorgi cnob https://mbworld.org/forums/c-class-w204/927422-w204-c300-swap.html Help https://mbworld.org/forums/c-class-w204/927421-help.html Tue, 12 May 2026 13:57:03 GMT Image: Image:

]]> C-Class (W204) Shawnad6514 https://mbworld.org/forums/c-class-w204/927421-help.html Power steering fluid change every 2yrs https://mbworld.org/forums/c-class-w204/927334-power-steering-fluid-change-every-2yrs.html Sat, 09 May 2026 22:44:44 GMT Back in May 2024 I had bought a 1l container of the Pentosin CHF 11S power steering fluid to swap out with the old power steering fluid in my 2010 W204. I have no idea if the power steering fluid... Back in May 2024 I had bought a 1l container of the Pentosin CHF 11S power steering fluid to swap out with the old power steering fluid in my 2010 W204. I have no idea if the power steering fluid had ever been changed previously. Car had around 150,000 miles at that time.

I didnt want to mess with disconnecting any hoses and risk breaking something or causing leaks. Instead I simply sucked out as much fluid out of the power steering fluid reservoir with a large meat syringe and filled with new fluid. I did this once a day until i went thru the 1l.

Heres what the new fluid and then the old fluid looks like:






Photo below looks like green new fluid floating on top of brownish old fluid. Cant remember exactly how I got this to happen.





Now 2yrs later I came across a good price for the Pentosin CHF 11S again so picked another one up. Just started and noted the condition of the old fluid. Looks a brownish color compared to the greenish new fluid color. It has a smell to it where the new fluid really doesnt have an odor or at least I cant pick anything up. Its a cloudy day unfortunately so the colors may be different with the lighting. I put some old and new fluid in cups to see side by side.











Not sure what this tells me other than the obvious color change. I was expecting the old fluid to be more greenish or at least was hoping. I'll finish up replacing the 1l container then see how the fluid looks.

]]> C-Class (W204) TimC300 https://mbworld.org/forums/c-class-w204/927334-power-steering-fluid-change-every-2yrs.html Dynavin D9 Flex install for W204 C200 Kompressor 2007 - Issue with power feeding https://mbworld.org/forums/c-class-w204/927328-dynavin-d9-flex-install-w204-c200-kompressor-2007-issue-power-feeding.html Sat, 09 May 2026 17:20:42 GMT Hello all,
I'm trying to install a Dynavin D9 Flex ( https://www.dynavin.de/en/products/p...c-classe-w204/ ) unit on my 2007 w204 C200 Kompressor, and am facing an issue with powering the unit:
- Without plugging the permanent 12v yellow wire, the unit doesn't turn on at all (is this normal?)
- When I plug it to the + of my battery, in the right-side of my engine compartment, it works.
- I have no idea how to run the yello cable properly from the dash to the engine bay. The fuse box is on the left-side and I feel there must be a better way.

Has anyone faced something like this? Should the unit work without the yellow permanent 12v ?
Should I use one of the fuse slots or the cigarette lighter as a backup solution?

Thank you in advance for your help. ]]> C-Class (W204) FatBaz https://mbworld.org/forums/c-class-w204/927328-dynavin-d9-flex-install-w204-c200-kompressor-2007-issue-power-feeding.html Can you idenify this part https://mbworld.org/forums/c-class-w204/927310-can-you-idenify-part.html Sat, 09 May 2026 00:53:07 GMT Can you please help me idenify what part is this plastic strip on the top. I am in the process of getting this car back to its original beauty but dont know what MB code or even how to call this... Can you please help me idenify what part is this plastic strip on the top. I am in the process of getting this car back to its original beauty but dont know what MB code or even how to call this strip, but scorching Arizona sun was not nice to it at all.

It is on the roof of 2012 C350 Coupe

]]> C-Class (W204) mpotok https://mbworld.org/forums/c-class-w204/927310-can-you-idenify-part.html