I tested my sunroof to see if MB had designed it for the Autobahn speeds.

It opened without any problem, but failed during closing. It closed partially and stopped. I had to press the close button a few times to close it.

Since then, I have noticed a slight hesitation while closing (ambient temp 87 F).

In the morning (ambient temp 55 F), it opens without any problem but closing it requires pressing the button a few times.

It is possible that something is mechanically wrong with it, but the effect of temperature is strange.

Any idea's?

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Zafar
94 E320 58000 Miles