Rear brake pads

[Kirky80]

Hi,

i have just bought a 2005 Audi a4 (B7) 2.0Tdi SE.  I am going to do a service on it, including front and rear pads, before the service date, firstly does anyone know if I can reset the service interval BEFORE the service reminder comes on. It still has 4000 miles or 260odd days left. 

 

Second, I didn't think these cars had rear brake sensors, the pads I am looking come with either ready for wear indicator or not ready for wear indicator.  I haven't taken the wheels off yet, does anyone know what type of rear pads I need. (They are low)

 

Thanks in advance!!