I have searched most of the day and have been unable to find any specifics on changing the rear pads on a 2003 S430 - all the topic I have found refer to tapping the pins out, just like on the front brakes (front brakes only took me a short time to replace) - however, there are no pins on the rear of this car - did they change rear brakes on the 2003 year model? They appear to be a floating caliber setup - and from what I can tell, the only way to change the pads is to pull the caliber - there are two bolts, and two 'star' bolts on each one, and don't know which to start with.
Thanks in advance.

Must admit, I thought they'd be fixed caliper, which means removing the pins and clips to remove the pads from the rear of the calipers.

However, if they're floating calipers, then you have to remove the caliper. Make sure its just the sliding caliper though, and not the fixed frame its mounted on (though that would work too). You can often just remove ONE of the caliper bolts and then rotate the caliper about the axis of the remaining sliding pin to access to the pads. Either way make sure you don't strain the flexible brake hose. You may need some good hex or torx tools to hold the pin still while you undo it. Using cheap tools doesn't work.

Nick

Thanks Nick - indeed they were floating calipers - took about 10 min per wheel.

Thanks Nick - indeed they were floating calipers - took about 10 min per wheel.