Proper Mercedes CLA / GLA rear brake replacement. A must watch. See description before you replace.

Proper replacement of most Mercedes with rear ( Electric parking actuator) brake pads.
*****( Make sure the doors are closed when you are putting the cars computer in maintenance mode.)*****
also # Do not press "replace brake pad" button twice. it will pop out the brake piston out.

Thanks @pacificrimstudio9090 for this info.
Release parking brake and insert stoper on both front wheels to avoid car rolling either forward or backsword
1. Loosen the lug bolts (you need ground resistance to turn the bolts, lesson learnt)
2. Put the EBP in pad replacement mode to disengage the caliper piston procedure: go inside the car and make sure all doors closed and push Start button on time, and toggle the back button until it goes to the mileage, first press and hold phone call button and then press and hold OK button at the same for 5 seconds. The cluster shows up vehicle DATA, move down to pad replacement position and hit OK and the cluster shows up: to move to fitting position and press Ok and get out car
3. Raise and remove the tire
4. remove the caliper and pad, push back piston with tool Replace the pads and reassemble the caliper on to the rotor (grease the retaining bolts, wear indicator, etc.)
5. Pump brakes until you feel the resistance
6. Reengage the EBP (similar to #2 above)
7. Yes of course, mount the tire and lower the vehicle
8. Repeat on the other side :)

[alvinszott]

That was fantastic Jeff. Thank you so much. I did my daughter's 2015 GLA250. I just want to reiterate what some else commented on that I missed that might have been obvious to most people but it wasn't to me and it wasn't mentioned in the video. Once I took the two bolts out of the caliper I expected the whole thing to come out easily like your video but it didn't. It finally dawned on me that this car isn't like the other older cars I did brake jobs on and has an electronic parking break that I had to release. Once I did that the rest of the job was exactly how you laid it out. This might save someone else a bit of heartache. Thanks again for a great video.

[victorstartheman]

Excellent video.... I tried to do the brake job without watching any videos (I am good and have tools), but when I couldn't push back the piston, I thought it was frozen and gave up.
Today I decided to search for it in YouTube and I found this excellent, after releasing the e-brake everything was easy... Thank you..!

[pacificrimstudio]

Release parking brake and insert stoper on both front wheels to avoid car rolling either forward or backsword
1. Loosen the lug bolts (you need ground resistance to turn the bolts, lesson learnt)
2. Put the EBP in pad replacement mode to disengage the caliper piston procedure: go inside the car and make sure all doors closed and push Start button on time, and toggle the back button until it goes to the mileage, first press and hold phone call button and then press and hold OK button at the same for 5 seconds. The cluster shows up vehicle DATA, move down to pad replacement position and hit OK and the cluster shows up: to move to fitting position and press Ok and get out car
3. Raise and remove the tire
4. remove the caliper and pad, push back piston with tool Replace the pads and reassemble the caliper on to the rotor (grease the retaining bolts, wear indicator, etc.)
5. Pump brakes until you feel the resistance
6. Reengage the EBP (similar to #2 above)
7. Yes of course, mount the tire and lower the vehicle
8. Repeat on the other side :)

[robinjohnson]

Jeff, I want to say thank you, thank you, and THANK YOU! You were very thorough, and it made changing my brakes so easy. Well, for my husband. Lol, the only issue we had was getting the vehicle data on the screen. Well, after 10 minutes, we were successful. We had to pull the starter button out and use the key to turn on the ignition. Oh my, the dollars that were SAVED! Thanks again, with plenty of likes.

[stephenwilson]

Thanks! Did my GLA250; half way through I couldn’t figure out why the pistons wouldn’t retract. A lifesaver.🙏🏻👍😊

[SuperBrainStorms]

Then you for the video. It was very very informative specially the reset brake pads part which I haven’t seen in other videos.

[almightytwisted]

Thanks for the help, super informative video. Keep up the good work. Currently working on my 2016 cla 250 amg night package fire

[sunnysarphare]

So the right sequence would be:
1. Loosen the lug bolts (you need ground resistance to turn the bolts, lesson learnt )
2. Put the EBP in pad replacement mode to disengage the caliper piston
3. Raise and remove the tire
4. Replace the pads and reassemble the caliper on to the rotor (grease the retaining bolts, wear indicator, etc.)
5. Pump brakes until you feel the resistance
6. Reengage the EBP (similar to #2 above)
7. Yes of course, mount the tire and lower the vehicle
8. Repeat on the other side :)

Thoughts?

[DezNutz-ns]

If the piston doesn't wind back all the way the first time. Re engage caliper but put something in front of piston so it wont wind out by using old pads, after doing so a few times then the piston will wind all the way back and the caliper will sit on bracket nicely.
Easiest way was by using an diag computer

[georgeeubanks]

Unfortunately this does not apply to a 2017 GLA 250. The rear calipers are very different so you do need an 18mm inverted to remove the complete carrier and caliper.

[jannelappalainen]

I have caliber off and it didn’t go to chance mode, i put wire from caliber to brake disk and then it works. Calider needs a ground connection caliper/car👍

[CRBN]

Good explanation but let me give you an advice: do not activate the brake service mode after removing the caliper. If accidentally you undo the service mode, you will end up with the piston being pushed completely out. That error can easily be done, believe me. Despite I'm aware of it I wouldn´t swear I would never do it ;-)

[PedroXavier_]

Is that computer's maintenence mode only needed for replacing the rears ones? Or the front ones too?

[rwbd]

Hey, come do a video on my 1 ton Chevy truck.

[adriantc]

So you need to go in the computer just for the rear pad replacement? I didnt see this extra step on any videos about front pad replacement. thanks!

[eduardomacias]

Same thing for a 2020 cla? And do you have to do that only when it comes to the rear brake pads or is it the same for the front as well

[ethanmatt]

Unfortunately I’m here because I did in fact hit the button twice and my piston popped out of the caliper, is there a way to solve this without buying new calipers?

[bgy]

I definitely watched this too late. I compressed the piston before releasing the brakes like you showed. Do I need to replace the caliper or the actuator or both?

[rockyfish]

You have to replace the rotars on Mercedes as well or it will squeel like mad

[rebeccamuntslag]

Should you only engage the maintenance mode for the rear brakes once and change both sides (driver/passenger)? Or Do you engage and disengage maintenance mode for each side?