There is a rectangle shaped black plastic box about a 1 1/4 or 1 1/2 inches long that snaps open to reveal a bar fuse. It is forward and outboard of the master cylinder.

Do not glance at the fuse and determine that it is good. They commonly develop a hairline crack near one of the screw terminals. Check it electrically either with power off and an ohmmeter or power on and make sure it has the same voltage relative to ground on both ends of it.

Hope this helps.

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2001 SLK 320 six speed manual
2014 Porsche Cayenne six speed manual

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