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Hey! My year 2000 w210 E280 is having some sort of coolant leak as the title implys.
I was wondering if someone could please help me confirm/correct what i suspect is the problem. I think it is the Auxiliary coolant pump. I managed to Read: "04 06" on the part that is leaking.
I have attatched some photos that hopefully shows clearly what part im pointing towards.
Any help is very Much appriciated! A part number or correct name of the part would be a huge help.
Thanks a ton in advance!
Best Regards
John The Part is located behind the Engine down where the arrow is pointing.
That is the culprit
Culprit from a diffrent angle
Last edited by Quamme91; 03-27-2019 at 10:15 PM.
Reason: Solved
Please understand - in many non-US markets it has been very common to get internal corrosion like that for two reasons: (1) prior owner's did not use correct MB or Valvoline G05 coolant - and (2) if local tap water was used to mix the coolant - many non-US areas can have "alkali" pH tap water.
The MB engine and cooling system MUST have pH neutral coolant mix - and if #1/#2 happen over time you will have corrosion of internal parts like you found there.
It would be BEST - to pull the thermostat and check that for corrosion - if looks OK there then put in fresh/correct coolant and use distilled water for the mix.
If you DO see corrosion on the thermostat - then BEST to use a coolant/flush product - follow the instructions for that flush to the letter - then replace with fresh/correct coolant with distilled water for any mix.
03-24-2019, 02:59 PM
