coolant

  1. C

    W212 Petrol Coolant Temp Fluctuations

    Hi all, W212 Petrol, M274 Engine, 2013, 60k mileage Coolant temp in town is stable at just under 90 which is fine........when travelling high speeds it's mostly at 80, however it will dip to 60's if I'm coasting. Had a MB software update recently (for the gearbox) but apart from that, the...
  2. J

    208D (OM601.940) coolant sensor location

    Hi, I'm trying to find the coolant sensor on this engine. That might sound like a silly thing to have trouble with, but I can see two things that look like the candidate, and neither are it. The actual problem I am having is that there is no heat and the temp gauge doesn't move. To me that says...
  3. A

    1998 C250TD not reaching operating temperature

    Hello all, my 1998 W202 C250TD benz at the moment (winter in the southern hemisphere) only reaches a "running temp" of around 62-65°C on the highway and when driven hard gets closer to about 70°C, but never reaching 80°C. The same is true even when it was warmer earlier this year only reaching...
  4. R

    Refilling coolant?

    2012 om651 c250 Ive changed the coolant thermostat housing cos it was leaking and obviously I lost coolant, my question is when I refill it is there a procedure as I've read that the housing opens up at a temperature. Cos as I've refitted it the coolant level hasnt dropped even with the engine...
  5. J

    Sprinter leaking large amounts of coolant (?)

    Appreciate any advice or help with this! Mercedes Sprinter campervan 311 CDI 2151 CC 2004 The last service was September 2018 with the following notes: "bottom coolant pipe rusty" "VHC coolant - anti-freeze weak and low level" "replaced coolant hose for engine" "replaced anti-freeze and...
  6. L

    A45 AMG 2014 coolant issues ?

    Hello there I’m new to this but I need some advice, on my a45 amg I noticed that when I took off the engine cover there was another ‘coolant’ looking container which was empty just to the right hand side of the oil cap I’ve had issues with the temperature fluctuating and then the launch control...
  7. R

    C350 CDI - Cheap with a few issues :C350

    Just got my first ever Mercedes. It's a 2012 facelift C350 CDI, was a bargain buy but has a few problems. First, the 'Top up coolant' message just came on so after a quick check it was a bit low, so topped it up. Message hasn't cleared yet and engine temperature all seems fine and no leak (yet)...
  8. M

    What is this reservoir for.

    Im trying to fill up the engine coolant on my sister c220d w205 model. However there are 2 reservoirs with the coolant label on them. If you are looking at the engine there is one of the left and it's black. There is also one on the right and you can see inside it but it's smaller than the one...
  9. C

    2014 C220D - Which coolant??

    Hi All, I've got a load of information from the forum over the last few months so thanks to all the contributors. I need to top up my coolant so have been looking at the posts on identifying which one to use but am still confused on this one and don't want to put in the wrong stuff. The fluid...
  10. M

    2008 GL420 Mystery Coolant Leak

    Hi All, I currently have a 2008 GL420 4.0 V8 Diesel and the coolant level constantly needs topped up every time its driven and no one can find the issue. My mechanic has looked and found the coolant cap was broken so it was replaced (didn't work or make a difference). The thermostat was also...
  11. E

    Drop of coolant

    Last Nov 2017, there was a leak where white powder was found around the cap. Replaced the cap and topped up the coolant. Last week coolant lights came on again, dropped by about 1cm. 3 months ago, my turbo pipe did split and I had to drive down for about 45 mins in limp mode on the M3. I was...
  12. V

    Mercedes E200 OM651.925 Coolant Leak Problem

    Hi all, I am new here and this is my first post in this forum after trying to find any info on the internet about om651 engines having a coolant leak problem but nothing matches my one. I own 62 reg prefacelift E200 CDI (om651.925 variant engine) and had to add some coolant in the past, maybe...
  13. J

    Newbie with w204 coolant leak

    Hi all , just joined need some help with my 09 C220 , been losing coolant for a couple of months but as I thought it would get worse , took it to my indie he says he thinks it’s the oil cooler , but has no interest in doing it as he’s moving abroad and said it’s a bad job labour intensive ...
  14. Mr Filipov

    How much coolant do I need?

    I am looking at doing a flush on the coolant in my 2011 E350 CDI BlueEfficiency. Would anyone know how much coolant I would need to get for the system? Mercedes sell them in 5L bottles and I am not sure if I will need 2 or 3. Don't fancy paying for an extra bottle if I don't need it. Kind regards
  15. C

    W204 M271 engine coolant temperature on motorway

    Hi all, My 2012 C250 CGI coolant temps sits at 90 degree's when in town driving, however drops and stays constant at 80 degree's when I'm on a motorway doing 70mph. Is this normal behaviour?
  16. P

    Merc C200 late 2011 - Coolant Warning

    Hi, I have been getting Coolant Top-up warning since last 2 days. Could you please advise 1. If I need to top-up my coolant. (I am attaching pics for your reference) 2. If yes then how can i check which coolant i need to buy from Halfords? Thanks in advance. Jit
  17. JensH

    W124 '95 E280, New Radiator, A/C, Coolant issues...

    Hi all, I had a new (Behr) radiator fitted about 3 weeks ago. No apparent cooling system problems until this week-end. After the visit to the workshop, though, I found that the aircon (Diavia, dealer fitted) had stopped working. The compressor would not switch on. I had for some time...
  18. M

    Coolant warning light, loss of power

    My 2011 Vito 116 CDi with 112,000 miles, fully serviced has just decided to lose power. Coolant warning light carm up in computer display indicating to pull over and switch off immediately, coupled with a loss of power, unable to get above 40mph, no revs. Pulled over. Switched off. Checked...
  19. J

    burning smell

    I've noticed a burning smell coming from my car after having been driven. I think it may be from the catalytic converter which appears to have some residue/gunk on it. The coolant level seems to have dropped slightly, so I'm thinking the coolant is leaking from somewhere and running down to the...
  20. dswhitehouse

    Cooling system problem - W163

    Good Evening, Looking for some help with a problem I'm struggling with. I have a 2002 ML270 CDI. I've had a problem for some time that is gradually getting worse. I'm topping up with coolant regularly; around 1/2 litre every 2 to 3 weeks. Recently also, despite the fact that there is adequate...


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