How Much Fluid to Flush E90 M3 Brakes

Audi has released a set of guidelines for proper brake fluid flushing on the 2017-2018 E90 M3. The steps for flush are as follows:

1. Park the car on a level surface and turn off the engine.
2. Remove the front bumper and front fascia.
3. Remove the two brake rotor bolts circled in red.
4. Remove the two brake line fittings circled in green.
5. Using a brake fluid flush tool, remove all of the old brake fluid from the calipers and pistons (see image). Be sure to clean off any rust or corrosion on these surfaces before refilling with new fluid.
6. Replace the brake line fittings, rotor bolts, and front bumper/fascia assembly (see images).

What is EMBrakes?

E M Brakes is a brand name for hydraulic brakes. They are used on cars, trucks, and buses.

When you flush your E M Brakes, you are removing any dirty or oily substances that may have built up over time. This will clean the system and make it work better.

To flush your E M Brakes:
1) Park the car in a level position.
2) Make sure the parking brake is engaged.
3) Open the bleed valve (if applicable).
4) Turn the braking system off by turning the key to the “Off” position.
5) Disconnect the fluid lines from the reservoir (or master cylinder if applicable).
6) Remove the reservoir cap and pour 2-3 gallons of fluid into the reservoir. Be sure to fill it to the top of the mark on the side of the reservoir.
7) Replace the reservoir cap and tighten it securely.
8) Reconnect all fluid lines and turn on the braking system.

What are the benefits of flush EMBrakes?

Flushing your EMBrake system can help to improve braking performance and ensure proper functioning. Here are some of the benefits of flushing your EMBrake system:

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1. Flushing your EMBrake system can help to improve braking performance.
2. Flushing your EMBrake system can help to ensure proper functioning.
3. Flushing your EMBrake system can keep brake fluid fresh and free from contaminants.

How do I flush my EMbrakes?

One of the most common problems with brake systems is that they can become clogged with debris. This can cause the brakes to stop working properly, leading to a dangerous situation.

To prevent this from happening, you should regularly flush your EMbrakes. This process involves using water and a plunger to dislodge any debris that may have built up over time. You can do this by following these steps:

1) Open the hood of your car and locate the EMbrakes.
2) Pump the brake pedal several times to bleed off any air from the system.
3) Fill a bucket with water and place it next to the EMbrakes.
4) Squeeze the plunger until water shoots out from the brake lines.
5) Repeat this process several times until all of the water has been expelled from the brake lines.

Do I need to flush my EMbrakes every time I change the oil?

Do you need to flush your EMbrakes every time you change the oil?

There is no single answer to this question since it depends on the type of oil and brake fluid used. Generally speaking, however, flushing your brakes every time you change the oil is a good idea. This will help to prevent build-up of dirt and debris in the brake system, which can cause problems.


If you’re experiencing a brake issue, it’s important to flush your E90 M3 brakes with fluid. Follow the instructions provided in this article to make sure you clear everything out and get your car back on the road as quickly as possible.

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