Carsy

B Service requires replacement of brake fluid. I have done this countless times on my vehicles over the years but never on modern vehicles fitted with ABS & other electronic braking safety features.

I would be pleased to hear from anyone who has changed out their brake fluid on the C Class & whether there is any different methods or things to look out for.

Glyn M Ruck

Pressure bleed at 2 bars - I will send procedure to your e mail address. I've just received it. Same as W203.

jstaneff

I had my B service a couple of weeks ago. They did not mark off having done the brake fluid. The car is only 18 months old, so it's a bit early for that. I plan on taking it in when it hits the 24 month interval.

So: what is the 24 month interval based on? The time since the car was built, or since you bought it? I would think based on calendar time since it was built. But, that 24 month is a rule-of-thumb anyway. Just don't let it go way past (at 7 years, my Jeep's brake fluid had done some damage to the braking system .. Yuck).

Glyn M Ruck

It should be physical time. The 2 year change is very conservative - With brakes it has to be - If the fluid boils due to water absorption you are in big trouble.

Mikephinney

I have a question regarding brake bleeding. I have a Mityvac pump for oil changes and I have thought of bleeding the brakes. Today I ordered the "Brake Bleeding" kit for the mityvac. my assumption is that it vacuums the fluid through the nipple on the calipers. Can this be done?

Also, I replaced the front rotors (Centric drilled) and pads (Akebono). since then it feels as though the pads are dragging from time to time. The feel at the pedal is great, barely more than the weight of your foot and it is coming to a stop. I wonder if the pistons are not retracting? I read as many brake replacement posts before doing the work. I ensured that I didn't over do it when pushing the pistons back in their bore etc.

Has any body had this happen? Will bleeding help? Have I wasted my money on this bleeder kit?

Big Daddy

Scott 52 on the Benz world forum has posted some excellent videos on how to do the job

http://www.benzworld.org/forums/w204...ml#post8268874

Mikephinney

So are you saying that pressure bleeding is the only way to go?

Mikephinney

Thanks by the way for the videos! Those are very helpful.

ECSTuning

We offer everything you need to bleed the brakes on your car including Brake Fluid from top manufacturers, as well as high-quality Power Bleeders.

Click on the images below to get to the Brake Fluid and Power Bleeders.





If there are any questions I can answer about any of these items, please feel free to post or send a PM!

2012c350

I dont believe a fluid change is part of a B service. Anyhow 2 years is too soon. For fun I had my F150 fluid tested by a metallurgist every year and went 12 years before the fluid had too much moisture present...170K miles. Not saying that's normal, but 2 years is too soon.

ECSTuning

2012c350,

Whether or not a metallurgist says that brake fluid did not contain enough moisture to warrant a change until it was 12 years old, I still hold to changing brake fluid every two years.

This recommendation is made by Mercedes-Benz as well, who states that brake fluid be changed every two years or 20,000 miles.

This is not hearsay, this is part of Mercedes-Benz scheduled maintenance. If you look at the Mercedes-Benz service sheet for the W204 chassis C-Class that I have attached to this post, you will see where (6th line under required service work, page 2) they say that brake fluid is to be changed every two years or 20,000 miles.

This is an official Mercedes-Benz service document, and is the same document that is used when a car is serviced at the dealership. If the company that builds the car recommends that the fluid be changed every two years for best performance and maximum brake component life, I would follow it.

2012c350

MB also feels that only their mechanics/dealerships should work on your vehicle. :-) But, yes, there is no harm in changing your brake fluids every 2 years or even every 6 weeks. For me, if I can test things then I'll replace them when things show that they need to be replaced. For others, no harm in following recommendations or sooner.

Glyn M Ruck

As brake fluid specs have become more stringent so brake fluid has become more hygroscopic. The 2 year flush is a wise one. Get any corrosion by-products into the ABS circulation system & you are in for a big bill to replace the ABS block & pump.

To say the least of safety issues regarding the fluid boiling due to water content.

This is not an F150 piece of iron.