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Recent coolant questions

I have just discovered oil in the header tank of my Mercedes

Hi I have just discovered oil in the header tank of my Mercedes 250e class automatic convertible, it is a 10 plate,85000 mis, I have had 3 different reasons for this from 3 different garages,could you pls ahead any light on what you think it could be ,thank you steven

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Matt

Engineer

Bachelor's Degree

30,114 satisfied customers
Earlier today I noticed smoke coming from the exhaust whilst

earlier today I noticed white smoke coming from the exhaust whilst driving but also after i'd stopped the car and turned the engine off. It started fine after that and no further white smoke when drove later on. All within the space of about 30 mins. Just checking if it's a one off or whether it could be serious. It's an e220 cdi 2015Assistant: How many miles are on the car? How has your mileage been lately?Customer: 35,000. not done a long journey for a week or soAssistant: What year is your MINI?Customer: It is a mercedes 2105Assistant: Are you fixing your MINI yourself? What have you tried so far?Customer: It's a mercedes 2015 not i've not tried to fix it as i'm no expert.Assistant: Anything else you want the mechanic to know before I connect you?Customer: no

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Matt

Engineer

Bachelor's Degree

30,114 satisfied customers
Thank you the Water level is dropping enough for the warning

Hi pearl thank you the Water level is dropping enough for the warning light to come on and the local mechanics have run it all day and there is no sign of a leak what could be the problem?Assistant: What part of the car is the leak coming from? And are you sure it's water?Customer: We don't know when I drive it the coolant level drops steadily but it is getting worse no visible sighting of where the leak isAssistant: What is the model/year of your Mercedes?Customer: Cd110 2012Assistant: Are you fixing your vehicle yourself? What have you tried so far?Customer: No a local garage is trying to find the problem they have run the van all day today and the coolant level has not dropped so it is only happening when the vehicle is being drivenAssistant: Anything else you want the mechanic to know before I connect you?Customer: The problem is getting worse every day yesterday I filled the water up to max and after 3 hours driving the water level had dropped out of sight the reservoir was emptyi

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Matt

Engineer

Bachelor's Degree

30,114 satisfied customers
The coolant warning sign has come up on my Mercedes 350. I

the coolant warning sign has come up on my Mercedes 350. I am intending to drive 250 miles over the next two days. Am I okay to drive

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Marty

Vice President / Manager

Associate Degree

39,594 satisfied customers
My w212 E250 estate 2011 has a water problem the top hose

My w212 E250 estate 2011 has a water problem the top hose was callapsing when cooled down new top hose fitted still happened was told sounds like the cap was not allowing the pressure out replaced the cap still happened all this time every so often l had to keep topping the coolant up had the fuel filter houseing renewed still happening found coolant leaking from the top sensor so replaced the thermastat still happening the first thing l had checked was a gas test to check for head gasket or cracked head / block nothing wrong can anybody help please thanks J Bailey.

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Matt

Engineer

Bachelor's Degree

30,114 satisfied customers
I'm in the process of replacing the water pump on my C36

I'm in the process of replacing the water pump on my C36 AMG. Being a straight 6 I'm concerned that when I refill it with fresh coolant I may trap air in the cylinder block/ head. Is there a bleed screw somewhere? Is there a trick?Any advice appreciated! Thanks, Martin

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Matt

Engineer

Bachelor's Degree

30,114 satisfied customers
I have a 2001 Mercedes C220 CDI. Kept going into limp mode

I have a 2001 Mercedes C220 CDI. Kept going into limp mode and discovered the primary catalytic converter was clogged up, removed and cleaned and also replaced the air filter. Have cleaned ERG valve and MAF sensor. reset all error codes.Then started getting a check coolant level and the radiator fan is running flat out and car now permanently in limp mode.Checked coolant level and it is fine, no leaks anywhere and car is not overheating, on the advice of someone else on here I disconnected the battery and went through an ECU master reset procedure. Still getting coolant level warning and now getting ESP warning as well. i have not driven the car as yet. Any ideas as to what is going on? Only had this car for 3 weeks and I just want to sort it so that i can get rid of it ASAP. I hate the thing with a vengeance and will never buy either a diesel car or a Mercedes ever again.

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Matt

Engineer

Bachelor's Degree

30,114 satisfied customers
The fan in the engine spontaneosly comes on making a loud

the fan in the engine spontaneosly comes on making a loud noise while driving along the cuts out for a while and starts again.when the engine is switched off the fan continues for a full minute and sometime longer before stopping. it sometimes the starts again before finally stopping.the noise is really loud.

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Matt

Engineer

Bachelor's Degree

30,114 satisfied customers
I have a Merc mlin U.K. I bought the car in 2013 the car was

Hi there. I have a Merc ml(###) ###-####in U.K. I bought the car in 2013 the car was giving me approx 25mpg in town and 33mpg on motorway. Combined long term mpg was on 27mpg according to the computer. I have always been servicing the car twice a year oil, air filter and fuel filters but the fuel performance has been steadily going down. It is now giving me 17-19mpg urban and about 25-27mpg on motorway. Can someone help me by diagnosing the cause of this ?

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Matt

Engineer

Bachelor's Degree

30,114 satisfied customers
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