Recommended replacement interval for the part category Warning Contact, brake pad wear : 30000 km

Important!

This replacement procedure can be used for:
BMW 3 Compact (E46) 316 ti, BMW 3 Compact (E46) 325 ti, BMW 3 Compact (E46) 318 ti, BMW 3 Compact (E46) 320 td, BMW 3 Compact (E46) 318 td … View more

The steps may slightly vary depending on the car design.

This video shows the replacement procedure of a similar car part on another vehicle

All the parts you need to replace – Brake Pad Wear Sensor for 3 Compact (E46) and other BMW models

Warning Contact, brake pad wear

Sensor, brake pad wear

Wear Indicator, brake pad

        Warning Contact, brake pad wear for BMW 3 Compact (E46) 316 ti Petrol (115 hp)
      
        Warning Contact, brake pad wear for BMW 3 Compact (E46) 325 ti Petrol (192 hp)
      
        Warning Contact, brake pad wear for BMW 3 Compact (E46) 318 ti Petrol (143 hp)
      
        Warning Contact, brake pad wear for BMW 3 Compact (E46) 320 td Diesel (150 hp)
      
        Warning Contact, brake pad wear for BMW 3 Compact (E46) 318 td Diesel (115 hp)

Replacement: brake pad wear sensor – BMW 3 Compact (E46). Tools you'll need:

                        Wire brush
                      
                        Brake cleaner 
                      
                        Electronic spray
                      
                        Copper grease 
                      
                        Torque wrench
                      
                        Wheel impact socket #17
                      
                        Round-nose pliers
                      
                        Wheel chock

Buy tools

Replacement: brake pad wear sensor – BMW 3 Compact (E46). AUTODOC experts recommend:

The replacement procedure is identical for both brake pad wear sensors on the same axle.
Please note: all work on the car – BMW 3 Compact (E46) – 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

Lift the car using a jack or place it over an inspection pit.

Step 5

Unscrew the wheel bolts.

AUTODOC recommends:

Warning! To avoid injury, hold the wheel while unscrewing the fastening bolts. BMW 3 Compact (E46)
Step 6

Remove the wheel.
Step 7

Remove the brake pad wear sensor from the brake pad. Use round-nose pliers.
Step 8

Disconnect the brake pad wear sensor wire.

Step 9

Open the cover of the wiring housing.
Step 10

Detach the connector of the brake pad wear sensor.
Step 11

Install the wear sensor on the brake pads.Use round-nose pliers.
Step 12

Connect the brake pad wear sensor wire.
Step 13

Treat the brake pad wear sensor plug.Use dielectric grease.
Step 14

Attach the connector of the brake pad wear sensor.
Step 15

Close the wiring housing cover.
Step 16

Clean the wheel rim mounting seat.Use a wire brush.
Step 17

Treat the surface where the brake disc contacts the wheel rim. Use copper grease.
Step 18

Clean the brake disk surface.Use a brake cleaner.

AUTODOC recommends:

Replacement: brake pad wear sensor – BMW 3 Compact (E46). After applying the spray, wait a few minutes.
Step 19

Install the wheel.

AUTODOC recommends:

Warning! To avoid injury, hold the wheel while screwing in the fastening bolts on the car. BMW 3 Compact (E46)
Step 20

Screw in the wheel bolts.Use wheel impact socket #17.
Step 21

Lower the car and working in a cross order, tighten the wheel bolts.Use wheel impact socket #17.Use a torque wrench.Tighten it to 120 Nm torque.
Step 22

Remove the jacks and chocks.

Step 23

Tighten the brake fluid reservoir cap. Close the hood.

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