M157 E63 diy brake pad change
https://www.permatex.com/products/lu...aliper-lube-4/
The Best of Mercedes & AMG
I'm at 36K so I'm going to try just the pads before doing the rotors as well....

the main reason why some people say not to compress is because dirt on the actual exterior of the piston can scratch/rip the seal but if you clean the piston exterior then no worries...
other main reason why some people say not to compress is old ABS systems used to be 2 way and forcing fluid back into the ABS module could damage its valves, but our newer abs systems are one-way with check valve that will only let the fluid flow in one direction so not an issue on our cars
but if you are super worried then yes putting some tubing on the bleeder screw, feeding it to cup with fluid in it, and opening the screw as compressing will eliminate one of the compressing concerns, but not the other one
Of course it's a good idea to do a brake fluid flush every two/three years or so depending on quality of brake fluid and usage pattern.
Permatex Disc brake Quiet
I have always used ATE brake fluid (DOT 3 or 4, whatever called for the vehicle). It comes in 2 colors, red and blue,.. same formulation. I alternate between the two because it makes it easy to see when new fluid has entered your caliper from the reservoir... other than guessing if the amber looks a little lighter.
Just a note.. thanks and have a great day!
I have don't pad and rotor change many times on other cars but for some reason this change which everyone ways is super easy, has me stuck. Has anyone else run into this problem or have any advice? I see now that I didn't push down on the spring when trying to pull out the top pin, can that be the reason?
I have don't pad and rotor change many times on other cars but for some reason this change which everyone ways is super easy, has me stuck. Has anyone else run into this problem or have any advice? I see now that I didn't push down on the spring when trying to pull out the top pin, can that be the reason?
That being said, what type of lube do you use one your caliper pins?
Also, I noticed that there are chips on the backside of my calipers, is that gonna cause a problem down the road or just looks bad? If it’s just bad looking, I’m not super concerned since only the backside of the caliper is chipped and not the front side.




My tips:
- On the front, it's easier if you take out the bottom pin first, then the top easily slides out.
- My 13mm bolts didn't require any effort at all to unscrew.
- I reused the sensors, they weren't yet worn.
- I used the grease that came with the EBC pads to grease the back of the pads and the sides where the black back plate is, and a tiny dab on where the pins cross the pads.
- I had to remove about 12cc brake fluid after changing the fronts and another 12cc after changing the rears, otherwise the reservoir would have overflowed.
- One of the pins on rears is very close to some cable/line. I used a socket extension between the hammer and pin to get the pin back in place so I wouldn't hammer the cable.








Happily the rotors are all well abvoe service limits (last changed rotors and pads by previous owner at 21k, he must have had a lot of stop and go driving as I got another 12k out of these pads which were already pretty thin at 26.5k when I got the car. That brake job was his 2nd pad change in 21k miles! So, thankfully, I had to do was pads and sensors all around. Took a couple hours start to finish including cleanup.
Just so it's findable with a search in the future, here's what I found when I looked up the minimum service thickness (the point at which the dealer tech would signal the rotors need to be changed with the pads):
Front: 33.5mm
Rear: 24.5mm
Mine were 34.8-35.3 front, 25.0-25.25 rear, approx, with a rotor caliper
Nice the sensors don't need to be reset etc., much smarter than the BMW system which can freak out and refuse to reset via the dashboard after you trip a sensor, and the connector setup is nice too, much simpler design. I guess that's why the sensors are $5 instead of $25. Continue to be pleasantly surprised by how easy it is DIY on this thing. Shame more people haven't caught on.
Last edited by Richbot; Jan 14, 2020 at 02:23 PM.







