I thought that slot was narrower too-very deceptive. But it snapped right in.

And FWIW, if no power is sent to this switch or relay, the ASR circuit is undisturbed. This can be reversed if you prefer, but I felt the logical default would be to retain ASR.

When the switch is activated, the ASR light comes on in the lower dash, and the snow chain light illuminates.

__________________
"If God had meant for us to walk, why did he give us feet that fit car pedals?" Sir Sterling Moss

Michael
2014 E63S Estate
2006 SLK55
1995 E500
1986 Porsche 944 turbo