Just yank up (with a slight tilt toward the front of the car) and it will come out. Soak in soapy water for an hour. Clean the empty well to remove all the junk that might have fallen in there. Then reinstall (with the cupholder in locked down position), make sure the plastic tabs get fully seated.

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RH

16 GLC300
12 C250
98 E300D
89 300SE
84 300SD sold