My wife was driving her 400E when the AC cut off (no blower), and then she saw smoke coming out of the vents. She cut the AC off immediately and let it sit for a while. As she arrived home, she turned it back on, and it worked fine. Still is, three days later.

Is this MB self-repairing? Assuming not, what happened?

peter
400 E
300TD

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Peter
1985 300TD 4-speed 212K
1992 400E 343K
2001 E320 72K