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It seems that more force is needed to fully engage the brakes. Normally, a toe tap is enough, but now I have to use the ball of my foot to achieve what my toes used to do.
I just replaced my pads and rotors yesterday, so that could be a small factor. Still, the braking issue, rough shifting, and also the defogger "activating" on acceleration are known symptoms of vacuum loss. These conditions have been present for about a year.
The rough shifting occurs when I don't "modulate" or feather the accelerator pedal; if I do not lift off too much, or depress it too far when accelerating or decelerating, shift are smooth. If, however, I lift off the accelerator when slowing, or depress it hard when accelerating, shifting is hard.
I assume this means that when engine RPMs are constant, so is vacuum pressure. When RPMs are not constant, vacuum pressure fluctuates. Again, this is my assumption. I don't know much about the engine vacuum system.
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2008 E350 4matic / Black/Anthracite
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Gone but not Forgotten:
2001 E430 4matic, 206,xxx miles, Black/Charcoal
1995 E320, 252,xxx miles, Black/Grey
1989 260E, 223,00 miles, Black/Black
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