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2004–2008 Audi A4

2004-2008 Audi A4 — Front Brake Pad Replacement

🔧🔧 Moderate 60-90 minutes

Quick Video Tutorial

Parts You Need

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Total Cost
$0.00
Part Name Part Number Price Buy
Front brake pad set for 2004-2008 Audi A4 (B7) — —
Brake pad wear sensor (driver side) — —
Brake parts cleaner spray — —
High-temperature brake lubricant — —

💡 Pro tip: Order all parts at once to save on shipping

Step-by-Step Instructions

Follow these steps carefully

1

Prepare the car and loosen the lug bolts

Park the A4 on level ground, set the parking brake, and chock the rear wheels. While the car is still on the ground, break the front lug bolts loose about a quarter turn so they come off easily once the wheel is in the air.

2

Lift the front and remove the wheel

Jack up the front of the car at the factory jack point and lower it securely onto jack stands. Remove the lug bolts completely and pull the wheel off to expose the brake caliper and rotor.

3

Remove the caliper guide pins and caliper

The B7 caliper is held by two 7mm Allen guide pins hidden under small plastic caps. Pop the caps off, remove both guide pins, and lift the caliper off the carrier. Hang it from the strut spring with wire or a bungee - never let it dangle by the brake hose.

4

Remove the old pads and wear sensor

Slide the worn pads out of the caliper carrier and note how the anti-rattle clips sit. Disconnect the pad wear sensor plug on the driver side so the old pads come free.

5

Compress the caliper piston

Open the brake fluid reservoir cap under the hood so displaced fluid has somewhere to go. Use a C-clamp or piston spreader to push the caliper piston back into its bore, keeping an eye on the reservoir level so it does not overflow.

6

Clean the carrier and lubricate contact points

Wire-brush the caliper carrier where the pads slide and wipe the hub face clean. Apply a thin film of high-temperature brake grease to the pad ears and the guide-pin contact points only - keep every bit of grease and fluid off the pad friction surfaces and the rotor face.

7

Install the new pads and refit the caliper

Fit the new pads into the carrier with the anti-rattle clips seated correctly, set the caliper back over them, and reinstall the two 7mm guide pins. Reconnect the new wear sensor plug and confirm it clicks into place.

8

Reassemble, pump the pedal, and bed the pads

Reinstall the wheel, lower the car, and tighten the lug bolts in a star pattern. Before driving anywhere, pump the brake pedal several times until it feels firm, check the reservoir level, and bed the pads in with a series of moderate stops from 40 mph.

All Done!

Test your repair before closing everything up. If something doesn't work right, double-check your steps.

⚠️ Common Mistakes to Avoid

  • • Driving off without pumping the brake pedal first - the pedal will go to the floor on the first stop because the pistons are still retracted.
  • • Letting the caliper hang by the brake hose, which can crack the hose internally and cause a soft pedal later.
  • • Getting grease or brake fluid on the pad friction surface, which causes squealing and weak braking until the pads are replaced again.
  • • Forgetting to reconnect the pad wear sensor, which leaves a permanent brake-pad warning light on the dash.
  • • Compressing the caliper piston with the reservoir cap still on and the reservoir full, which forces brake fluid to overflow onto paint.