How to Replace Brake Pads on Audi A4L?
2 Answers
Generally, brake pads should be replaced every 25,000 to 30,000 kilometers. Below is the method for replacing brake pads on an Audi A4L: 1. First, open the cover of the brake fluid reservoir in the engine compartment and check the brake fluid level. If the brake fluid level is above the maximum mark, some brake fluid should be siphoned out to prevent overflow during the replacement process. 2. Prepare the new brake pads for replacement and remove the wheel where the brake is located. Be careful to avoid scratching the rim during the removal process. 3. Use a wrench with a socket to remove the bolts of the brake caliper, then take out the old brake pads (if there is a brake wear sensor, remove it first). 4. Clean the brake caliper with a cloth and apply anti-squeal paste to prevent noise during braking. 5. Use a piston press tool to push the piston to its limit, then install the new brake pads onto the caliper. After ensuring the new brake pads are properly installed (and the brake wear sensor is reattached if applicable), tighten the guide bolts to complete the installation. 6. After installation, close the reservoir cover, get into the car, and press the brake pedal firmly several times to reset the brake system. Then, check the brake fluid level to ensure it is within the appropriate range. Finally, test drive the vehicle to verify the braking performance.
Last time I helped my neighbor replace the brake pads on their Audi A4L, I noticed several key points to pay attention to. First, don't rush to jack up the car when removing the wheel hub bolts—remember to release the electronic parking brake and enter maintenance mode, otherwise the piston reset might trigger a fault code. After removing the tire, focus on the caliper guide pins. When using a 7mm hex key to remove them, spray some penetrating oil first, as these parts on Audis are particularly prone to rusting. Don't skip applying anti-squeal paste on the new brake pads, or they'll start squeaking right after installation. The most mysterious part is that after replacement, you need to pump the brakes about 20 times to reset the caliper. Remember to test drive at low speed and brake multiple times for bedding-in. Friendly reminder: the rear wheel sensor wiring harness is extremely fragile—if you pull too hard and break it, you'll have to spend 800 bucks replacing the entire assembly.
