In this video I am changing brake fluid on a CLK 200 W209. Very simple steps without any special tools. Just repeat the process for all 4 brake valves.
Generaly you start from the furthest valve from the master cylinder and move on to the next (Rear right, rear left, front right, front left).
I recently replaced the brake hoses so most of the fluid is new. You won't see a difference to the color. The old fluid would be black.
Brake fluid should be changed every two years.
IMPORTANT: USE ONLY THE CORRECT TYPE OF BRAKE FLUID!
If it's not on the cap look it up in your car's manual.

Here is a list of what you need for this job (USA links):
Car jack: https://amzn.to/2MKXyya
Jack stands: https://amzn.to/2MKQh1p
Impact gun: https://amzn.to/2NEyOY1
Wrench set: https://amzn.to/2MMhi4D
Turkey baster: https://amzn.to/2nyJTiA
Tube: https://amzn.to/2ntTVBo
Make your life easier using this brake bleeder: https://amzn.to/2otY8FC

UK links:
Car jack: https://amzn.to/35YqWZU
Jack stands: https://amzn.to/2M5h8X1
Impact gun: https://amzn.to/3p3pxIT
Wrench set: https://amzn.to/39QoLZy
Turkey baster: https://amzn.to/3pxf0WR
Tube: https://amzn.to/3clfhZ7
Brake bleeder: https://amzn.to/39wGiqP

DE links:
Car jack: https://amzn.to/3sIRAOT
Jack stands: https://amzn.to/3xdh5eN
Impact gun: https://amzn.to/3tN0E6D
Wrench set: https://amzn.to/3ejuvwU
Turkey baster: https://amzn.to/3dLGJzs
Tube: https://amzn.to/3eqUsL9
Brake bleeder: https://amzn.to/3eoSdbb

The above links give me a small comission which help me to improve and give me extra motivation. So if you found this video helpful in any way and you are planning to buy any of these tools, please use these links. I would really appreciate it.

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