Date registered: Jun 2007
Vehicle: '95 E300 DIESEL, '91 600SEL, '92 600SEL
Location: San Diego/USA & Belgium/Europe
Mentioned: 21 Post(s)
Quoted: 955 Post(s)
First check visually that you do indeed have coolant, which it appears you've already done. Only use genuine MB coolant or Zerex G-5 mixed 50/50 with distilled water. Using anything else is asking for trouble.
If the low coolant light still comes on despite having enough coolant in the reservoir, you may have a bad float (the sensor in the reservoir). Also make sure your radiator cap is good.
If you are unsure of the age/condition of the reservoir and cap, replace the whole assembly (reservoir, tank & float).
Most importantly, you need to find out why your car overheated (bad thermostat, bad fan clutch, bad electric fan, etc.).
Last edited by sbaert; 09-07-2011 at 08:52 AM.