Front and rear brake pads

EASY PUSH THE PIN OUT THAT HOLDS PADS SLIDE OLD PADS OUT .PRESS THE CALIPER BACK IN WITH PRY TOOL INSTALL NEW PADS ,SLIDE PIN BACK IN ,DONE TAKES 5 MIN TO CHANGE PAD,PIN IS ABOUT 2 IN LONG 3/16 IN DIA.
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Brakes could be worn down allowing a safety feature to make a noise, or if it is a grinding noise your disc pads are worn out and need replacing

The cpu sent you a warning that you obviously ignored and now it has shut down the engine to protect you. Have the brakes repaired and reset the cpu. check for fault codes.

No. Just special tools. And I believe there are sensors on the pads that Mercedes recommends replaceing with the pads.

Proper size wrenches and a large C-clamp to push piston back into the caliper is only tools for the front, but back disk brakes require special tool to TURN the piston as it is pushed back into caliper to reset emergency brake. This tool can often be borrowed from Auto parts store or purchased from Harbor Freight http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=40732 for about $20. Don't try to service rear disks without the tool, Calipers can be broken if not retracted properly!

rate as fixya if this is what you need. Thanks

1. Remove the rear disc brake caliper (2K327).
2. Remove the brake caliper bolts.
3. Lift the rear disc brake caliper off the rear disc brake caliper anchor plate (2B582).

1. CAUTION: Do not allow grease, oil, brake fluid or other contaminants to contact the brake pads.
   Remove the brake pads by pushing inward and rotating the pad up.

1. NOTE: Use a block of wood or used pad to protect the piston and boots.
   Retract the caliper piston (2196) into the rear disc brake caliper.

Mercedes brakes are setup with a pad wear indicator on the pads, one of the four pads in the front should have had a wire attached to it ( as well as in the rear brakes if 4 wheel disc). If this wire is broken or was't re-installed on the new pads, this will trigger the light on your vehicle, if all the wirs are connected properly and in place i would suggest taking it to the dealer to have them take care of the light. Hope this helps

For rear pads rear rotors changing procedure you need lift up car,secure front wheels, disconect rear wheels from rotors,(if you missing the bolts try drill it whith portable electric drill at first smal drill 3 mm diameter,then 10 mm diameter.)Disconect the hydraulics breake cylinders cearefully putt it on plate not tears the house.Change beake pads.Unscrew the rotor whith hexagonal wrench.Setup the hand bracke clearance.Putt agan the rotor on rear axis.Assembly the breake cylinders ,and wheel tighening 110 Hm.

I have a e500 03 i have change the front pads and sensors and rear senor. the dash still says BRAKES VISIT SERVICE CENTER. BACK BRAKES ARE FINE. HELP.

On one of the front driver side pads there is a sensor for low pads. He either did not hook it back up or got a lose connection to it.