I'm trying to figure out where this sound is coming from. Chirping, just like a bird, occurs during driving, over bumps, over smooth surfaces and even can be heard when I close the front doors on both sides of the car. Thought it might be the serpentine belt, but it seems tight and in good shape. Recently replaced front & rear shocks, rear springs (left one cracked) and ball joints; tie rods are leaking & will be replaced next week. Thanks for your thoughts.

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87 300e (white/black; amg body kit)
88 300ce (red/cream; amg body kit)
93 300ce cabrio (white/blue/blue top)
93 300ce cabrio (black/grey/black top)
98 ml 320 (totaled @ 137,000 miles)
99 clk320 (black/grey/black top)