Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBMW2021740I XDRIVEREPAIR AND DIAGNOSISBRAKESANTI-LOCK BRAKESBRAKES -- REPAIR (G12)
2021 BMW 740i xDrive
Brakes -- Repair (G12)
2021 BMW 740i xDriveSECTION Brakes -- Repair (G12)
- 34 00 Brakes, General
- Troubleshooting the brake system if the brake pedal fails
- 34 00 009 Perform brake test on test stand
- Brake test on the front axle on the brake test stand
- Brake test on the rear axle on the brake test stand
- Brake test of the parking brake on the brake test stand
- Brake test on the front axle on the brake test stand (all-wheel drive)
- Brake test on the rear axle on the brake test stand (all-wheel drive)
- Brake test of the parking brake on the brake test stand (all-wheel drive)
- 34 00 027 Replacing fluid in brake system
- 34 00 046 Vent braking system (except during part exchange)
- 34 00 046 Vent braking system (during part exchange)
- Guideline for applying brake pad paste on brake pads and brake anchor plate
- 34 11 Front Brakes
- 34 11 000 Removing and installing/replacing brake pads on both front disc brakes (High brake)
- 34 11 000 Removing and installing/replacing brake pads on both front disc brakes (17-inch low brake)
- 34 11 220 Removing and installing/replacing both front brake discs (except high brake)
- 34 11 220 Removing and installing/replacing both front brake discs (high brake)
- 34 11 250 Replacing front left or right brake anchor plate/protective plate (17 inch high and 18 inch brake)
- 34 11 250 Replacing front left or right brake anchor plate/protective plate (17-inch low brake)
- 34 11 519 Removing and installing/replacing front left or right brake caliper (17-inch Low brake)
- 34 11 519 Removing and installing/replacing front left or right brake caliper (high brake)
- 34 11 552 Replacing the left or right front brake caliper
- 34 21 Rear Brakes
- 34 21 200 Removing and installing/replacing both rear brake pads of disk brakes
- 34 21 280 Removing and installing/replacing rear left protective plate
- 34 21 282 Remove and install/replace rear right protective plate
- 34 21 295 Replacing rear left or right dust boot on brake caliper
- 34 21 320 Removing and installing/replacing both brake discs
- 34 21 745 Removing and installing/replacing rear left or right brake caliper (without brake bleeding)
- 34 31 Brake Master Cylinder
- 34 31 181 Replacing expansion tank for hydraulic brake actuation (production date up to 10/2015)
- 34 31 181 Replacing expansion tank for hydraulic brake actuation (production date from 10/2015)
- 34 31 500 Removing and installing/replacing tandem brake master cylinder (production date up to 10/2015)
- 34 31 500 Removing and installing/replacing tandem brake master cylinder (production date from 10/2015)
- 34 32 Brake Lines
- 34 33 Brake Booster
- 34 35 Brake Pad Wear Sensors
- 34 41 Parking Brake
- 34 51 Mechanical-Hydraulic Brake Components
- 34 52 Abs / Stability Control System
- 34 52 162 Removing and installing/replacing EMF actuator
- 34 52 250 Removing and installing optional equipment system (SAS) control unit
- 34 52 519 Replacing the DSC control unit (after vehicle diagnosis)
- 34 52 525 Replacing one front wheel speed sensor
- 34 52 535 Replacing a rear wheel speed sensor
- 34 52 751 Replace control unit (SAS) (After vehicle diagnosis)
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.