Got 30K miles on my 2009 Cayenne Turbo S and brake pad light is coming on. Questions: 

1.  Should i go to my dealer, or a good service station repair shop?  Repair shop folks are much cheaper.  Is pad replacement a complicated, or an easy, procedure?

2.  Do front and rear pads need to be replaced, or just fronts?

 

Thanks from a non gear head...