I have a 20-year old Toyota Tercel with 103K miles. It runs well.
Last week, the brakes didn't work. I changed a brake hose because it was leaking and I am going to change the other 3 brake hoses soon, but do I need to change other parts in the brake system to make sure that I will not have a brake problem while driving?
The problem showed up Monday morning. The car was parked for 2 days (not moved). The problem was "no brake at all" : the brake pedal sink towards the floor. There was a lot of oil near the front right wheel. The brake light was on, and the master cylinder was empty.
The car is well maintained. I changed the brake fluid twice over the last 10 years. I replaced the shoes early 2016 and checked the rotors and pads. The brake did not make any sound until after the mechanic took out the pads to check the rotors (early 2016). He mounted the pads and told me that I need to replace the pads and rotors after 10k miles.
I always check the fluids in the car. The brake fluid was always light colored/clean.
I have been watching the brake fluid in the master cylinder after replacing the brake hose. It looks good (no changes). The brake pedal is soft. I guess the mechanic didn't bleed the system. when I get the 3 other hoses replaced, I will make sure the system is bled.
The friction parts usually give some signs before they fail. Also I know how long they have been on the car and when I need to replace them, but leaking is a hidden problem that might start/happen at any time even after inspecting the whole system.