Acura MDX Rear Brake Pad and Rotor Replacement: 2017 - 2020 

Thanks!

I’ve seen it done that way in another MDX video, which is unnecessary when you have to just rotate the piston as shown here. I’d imagine the RDX is the same way and likely isn’t necessary there either if you have the correct tools.

Thank You! I have a 2017 RLX with 50k and about to perform my first brake job on this car and the rear electronic brake was of concern to me. Anything else you think I should know about doing it? Appreciate it.

That’s because the RLX and MDX share the same rear rads and shims.

What brakes you use are really up to you and your budget. I typically do not use OEM rotors/pads but choose a high quality aftermarket manufacturer. The tool part number is at the beginning of the video and came from Autozone. Thanks for watching!

You are correct, no electric parking brake until 2017. Thanks!

@@stuffyoucando2 ironically the same set up I have on my 67 vette

Good observation...It should be on the inside. Not sure if it's going to make any noise or anything.

@@rontan8954 it won't make any noise day to day but generally the pad that is touching the piston wears down quicker so you want that pad on the inner side.

It would still squeal once it contacts the rotor. The general idea behind putting them on the inside is that people tend to think the pad on the piston side wears faster. I’ve never observed this to be true and feel the position of the squealer is a preferential thing. Personally, I think if you solely rely on this device to tell you that your brakes need replaced, you should rethink how you maintain your vehicle. You should inspect your brakes periodically to check wear, not rely on a noise making device with questionable reliability.

Spend the extra few dollars and change pads at the same time.

No these are the rear brakes. They’re definitely not identical to the front but the overall process would be similar, though there is no parking brake and hardware will possibly differ in size and torque specifications.

Neither.

It’s an OEMTools 24693. As for the rubber boot, sometimes that happens and you just need to be careful not to tear it. You might be able to lubricate it with something but be sure it’s safe to use on brake/rubber seals.

Thanks! I do, it’s here: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-RY2jUGRu1I0.htmlsi=UTcSY5wIoIDyqNEA

@@stuffyoucando2sweet thanks!

Thanks! Over the years I’ve exclusively used Permatex Ultra, but was out of it for this video and used Sta-Lube instead and it seemed fine as well.

I actuated the parking brake and it adjusted properly and everything worked fine after that.

@@stuffyoucando2 thank you so much sir.

Honestly, I think those doing those videos weren’t aware that some calipers require the piston to be rotated to insert it back into the caliper, regardless of whether or not there is an electric parking brake. I had no issues after doing it as shown here, the parking brake worked perfectly immediately after I put everything back together and tested it. Thanks for watching.

@@stuffyoucando2 After watching a number of videos. I now realize that the screw drive on the electric motor sets the piston position relative to the wear of the brake pads. When turning the piston back, it is setting the motor's screw drive positioner back to accommodate the new brake pads original dimensions. The piston bore is smooth - thus your approach is completely correct. I just don't have the 3 pronged device that fits into the piston's grooves. Most retraction devices have 2 or 4 prongs; even the Harbor Freight kit doesn't have the right part for Acura. Thanks for your video - it helped me understand the dynamics of this system.

That’s correct, and it seems that to have a 3 point contact for rotating the piston is unusual, most I’ve had in the past have been two and you could get away with using a pair of needle nose pliers, but not in this case. I’m sure you can remove the parking brake motor as shown in other videos if you don’t have or aren’t able to get the tool. I got mine off the shelf at Autozone.

@@stuffyoucando2 Thanks for the tip!

No problem, good luck!

If you set the electric parking brake, you won’t be able to remove the caliper as it’ll be clamped to the rotor. Make sense?

@@stuffyoucando2 Thanks! yes, that's clear.

@@bryanlee5390 great, thanks!

Thanks!

The process will be similar except the piston should be able to be compressed rather than screwed back in. I do plan to do a video on front brakes, just not in the very near future. Thanks for watching!

I bought them from RockAuto.

To my knowledge there is no 2021 model year, Acura went to the new 2022 model from 2020. en.m.wikipedia.org/wiki/Acura_MDX

The part number is at the beginning of the video. I got it from Autozone but it can also be found on Amazon as well.

@@stuffyoucando2 thank you.

@@geoffdyke702 no problem!

Raybestos pads and rotors.

Do you think I crawl under the vehicle? I don’t…but if I did I’d be using jack stands.

Also, I list jackstands on the required tools (if desired). It’s really up to what you’re comfortable with. Knowing that for a job like this I’m not going under the vehicle I did not use them myself for this job.

Thread locker is not necessary.

Thread locker is not required if you torque them to spec. You could, however, apply some anti-seize. I always do, bc I live in upstate NY.