Perform the replacement of brake pads in complete set for each axis. This provides effective braking.
The replacement procedure is identical for all brake pads on the same axle.
Please note: all work on the car – Mercedes W168 – should be done with the engine switched off.
Carry out replacement in the following order:
Step 1
Open the bonnet. Unscrew the brake fluid reservoir cap.
Step 2
Secure the wheels with chocks.
Step 3
Loosen the wheel mounting bolts. Use wheel impact socket #17.
Step 4
Raise the front of the car and secure on supports.
Step 5
Unscrew the wheel bolts.
AUTODOC recommends:
Important! Hold the wheel while unscrewing the fastening bolts. Mercedes W168
Step 6
Remove the wheel.
Step 7
Disconnect the brake pad wear sensor wire.
Step 8
Detach the connector of the brake pad wear sensor.
Please note!
Some cars are not equipped with the brake pad wear sensor.
Step 9
Clean the brake caliper fasteners. Use a wire brush. Use WD-40 spray.
Step 10
Unscrew the brake caliper fastening. Use a drive socket #12. Use a ratchet wrench.
Step 11
Spread the brake pads. Use a crowbar.
Step 12
Remove the brake caliper.
Replacement: brake pads – Mercedes W168. Tip from AUTODOC experts:
Tie the caliper to the suspension or to the body with a wire without disconnecting from the brake hose to prevent depressurization of the brake system.Make sure that the brake caliper is not hanging on the brake hose.Don't press the brake pedal after the brake caliper has been removed. As a result, the piston can fall out from the brake cylinder, and brake fluid leakage and depressurization of the system may occur. Check the brake caliper bracket, brake caliper guide pins and boots. Clean them. Replace, if necessary.
Without starting the engine, press the brake pedal several times until you feel significant resistance.Slow down smoothly for first 150-200 km after the brake pads replacement. Avoid unneccessary and sharp braking to a stop.
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