E-Class (W211) 2003-2009

W211 Front Brake Pad Replacement

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Old 01-28-2010, 06:00 PM
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2005 E320
W211 Front Brake Pad Replacement

Tools
13mm socket (caliper bolts)
11mm wrench (bleed nipple)
Caliper retract tool or C clamp

Deactivate anti-tow switch (fwd overhead console switch)
Close all doors & trunk.
Remove key and activate alarm (lock vehicle) - this deactivates SBC
Do not open any doors, activate alarm remote or open trunk or SBC pump will run.
Remove brake wear sensor plug.
Unclip wear sensor and speed senor wiring from clips behind hub by hand - allows more play when caliper is removed.
Remove caliper bolts (13mm).
Remove caliper and rest on a box or similar aft of wheel hub approximately same height
Remove pads and spring clips
Install new spring clips (included in brake pad kit)
Fit sensor to one pad, install pad with sensor on inboard side position.
Install outboard pad.

Fit clear plastic pipe to bleed nipple. Compress caliper by using caliper press tool or C clamp whilst slightly opening bleed nipple (11mm) to allow brake fluid from caliper to flow out as caliper compresses (pushes in). Close / tighten nipple with fluid still flowing, I did not need to bleed brakes afterwards. Caliper will have to retract almost flush with caliper frame (within 1/8 inch).

Install caliper over new pads - ensure brake wear sensor wires are slid through caliper hole first.
Install caliper bolts (13mm).
Connect brake wear sensor plug.
Check tighten bleed nipple and install rubber cap.
Push brake wear & speed sensor wiring into clips behind hub.
Install wheel.

Open car door and you will hear the SBC run. Start car and press brake pedal - all should be normal.

Check brake fluid level (DOT 4)
Old 01-29-2010, 11:15 AM
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03 E500 and Corvette
Well done.
Old 01-29-2010, 02:14 PM
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All Diesel Fleet !1983 240d stick,2005 E320 CDI Midnight blue, 2005 E320 CDI, Desert Silver, Kubota
Good Post

Thanks for the informative post.

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