Q: Soft brake pedal after replacing rear brakes and master cylinder 2003 Audi A4

asked by on

Changed rear brakes in vehicle, afterwards had a soft pedal. Suspected it was a bad master cylinder, replaced master cylinder. After replacing and properly bleeding master cylinder, problem still persists. Soft pedal. Removed calipers and there is no pressure to the rear brakes at all. Very lost on this one. Any advice would help!

My car has 102000 miles.
My car has an automatic transmission.

Hello. If you have no pressure to the rear calipers at all and if the master cylinder is new then you may have forces some debris into the ABS unit when you compressed the pistons in the rear calipers. In some cases the system can be pressure bled to fix it but it may need a new ABS unit.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Soft brake pedal after replacing rear brakes and master cylinder 2003 Audi A4

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Hey my car is leaking a lot what are some suggestions before i try taking it into a shop

Hi there: It really depends on what type of fluid is leaking and where it's coming from which will determine the corrective course of action. If you're leaking coolant, it could be from a coolant hose, connection or a cooling...

Q: After being serviced, car ignited under passenger seat

The scenario of raw fuel being dumped into the catalytic converter causing extreme heat to possibly ignite a fire is a plausible scenario. It is generally not good business to perform a tune-up and send a customer out in a...

Q: Q: Smoke coming from engine

Hello. There are two different types of fluid that would cause smoke to come out from the front of your car. If oil is leaking down from the valve cover gasket or oil filter, and onto the exhaust, this will...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.