Any insight how to replace button cap on truck release switch for 2004 A6 located on the door jam? I do not have the cap. It somehow broke and must have fallen out of the car undetected. Really was not used very much. Renders swith unusable. Does entire assembly need replacement? Common issue????

Thanks.

 

Comes as asembly only- ~$60.

 

searching for the oem part number or where to find this truck release switch for 2004 A6 located on the door jam ? any assistance is appreciated.