Hey guys, just a simple Do it your self guide for doing a coolant flush. I just did this coolant flush today, perhaps it was one of the easiest maintenance jobs I have ever done.

Steps:
1) Buy Coolant/Antifreeze from Mercedes dealer. $28 for the Jug
2) Buy Distilled water from Grocery store (tap water has chlorine, fluoride and other chemicals which are safe for humans but not a Mercedes Radiator...)
3) No need to raise your car, just park on a flat surface and Remove the bottom shield, only 6 screws
4) On the driver side, unscrew the large red plastic drain plug at the bottom of the radiator. Coolant will begin to flow. Then remove cap on reservoir and watch the coolant flush out for about 15 minutes.
5) Tighten the red drain plug shut. Mix your distilled water and coolant and top up from the reservoir. Once it looks filled. Squeeze and Pump the hose on the top of the radiator for a few minutes and watch the bubbles burp up and coolant level decrease. Do this a couple times and top reservoir with more coolant accordingly.
6) Wait 10 minutes, then cap coolant reservoir. Start up the car and take it for the spin. If you burped the radiator properly, no need to top up. Check again after 10 minutes (for the sake of checking).

7) Go to the beer store and buy a case. You have the rest of the day to party.

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Mercedes CLS
Mercedes C-Class W203 - All time favorite

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Mercedes C-Class - W202 Lemon
Mercedes ML - Warrior
VW Jetta – Worst Car I ever owned - Alot of problems