coolant level

Asked by Mar 30, 2016 at 10:22 AM about the 1998 Mercedes-Benz C-Class C 230 Sedan

Question type: Maintenance & Repair

I have a c240 1999 w202 and I have a problem with my coolant level. I
have been using the vehicle for a year without having to top up coolant but
one day after traveling a 1000km the coolant level light came up and when
I checked I realized it had gone down to just below the half level. I topped
up with a liter of coolant and another of water. since then I have to top it at
least once a week yet before this I had gone for almost a year without the
level changing what could be the problem, it seems the are no visible
leaks. please help.

1 Answer

227,895

You have a leak somewhere. Maybe the leak is small enough that the coolant is evaporating. Perform a pressure test to verify.

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