Turns out the 6HP26 temp sensor is a TFT built into the mechatronic assembly...



... along with the ISS and OSS. Not so easy to replace.

So yeah, as andrewwynn suggests, start with checking the connector!

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Wayne
2005 BMW X5 3.0d (b 02/05)
2001 BMW F650GS Dakar (b 06/01)