Brake Master Cylinder Replacement Help
#1
Super Member
Thread Starter
Brake Master Cylinder Replacement Help
CAR: 2009 C350
MILEAGE: 141K
ISSUES: Brake pedal soft. I don't think the previous mechanic bled the brake system properly after replacing brake fluid. so it could be that but....
Q. Has anyone replaced the master brake cylinder and at what mileage? I presume around 125K is when it should be done.
Opinions please.
MILEAGE: 141K
ISSUES: Brake pedal soft. I don't think the previous mechanic bled the brake system properly after replacing brake fluid. so it could be that but....
Q. Has anyone replaced the master brake cylinder and at what mileage? I presume around 125K is when it should be done.
Opinions please.
#3
Super Member
Thread Starter
#4
Super Member
CAR: 2009 C350
MILEAGE: 141K
ISSUES: Brake pedal soft. I don't think the previous mechanic bled the brake system properly after replacing brake fluid. so it could be that but....
Q. Has anyone replaced the master brake cylinder and at what mileage? I presume around 125K is when it should be done.
Opinions please.
MILEAGE: 141K
ISSUES: Brake pedal soft. I don't think the previous mechanic bled the brake system properly after replacing brake fluid. so it could be that but....
Q. Has anyone replaced the master brake cylinder and at what mileage? I presume around 125K is when it should be done.
Opinions please.
Master cylinder will last the life of the car. No way should they need replacing at 125K unless you ran the system dry or never replaced the fluid. Pumping out the fluid from the reservoir and refilling with new fluid every 2 years goes a long way. Bleeding it out and flushing it is what you should do every 2-3 years.
#5
Super Member
Hi, I am sure I read somewhere theres a trick if not done right you get the soft padle.
I had my fluid replaced and brake pads/rotors under guarantee, and afterwards sure I felt padle softer than before on normal breaking, howevr if I apply speed limit where it slow down with that and then step on the brake as well, it feels hard and normal, well thats how I still drive it years later, it is now time for a fluid change again, I actually forgot about this.
I had my fluid replaced and brake pads/rotors under guarantee, and afterwards sure I felt padle softer than before on normal breaking, howevr if I apply speed limit where it slow down with that and then step on the brake as well, it feels hard and normal, well thats how I still drive it years later, it is now time for a fluid change again, I actually forgot about this.
#6
MBWorld Fanatic!
We flushed fluid using a pressure system on the reservoir to avoid getting air in the system, but it sounds like it just needs to be bled correctly if it was normal before and is now feeling spongy or soft. Replacing fluid will make no difference to the feel of the brakes.
#7
Super Member
Thread Starter
Master cylinder will last the life of the car. No way should they need replacing at 125K unless you ran the system dry or never replaced the fluid. Pumping out the fluid from the reservoir and refilling with new fluid every 2 years goes a long way. Bleeding it out and flushing it is what you should do every 2-3 years.
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#8
MBWorld Fanatic!