[SliceAndSpice]

Hello, I have a 2018 Honda Accord Sport and my rear pads are completely gone. My uncle told me this happens when people drive with the E-brake on many times.

However, my car will not move with the E-brake on and it gives me a warning to turn it off first.

So that made me think of something else I've used a couple of times in the past, the Electronic Brake Hold (EBH)

I have reason to suspect that these are the culprit of my rear pads wearing out so quickly. When using the EBH in the past I noticed when I get on the throttle from a stop and then reapply the brakes again, with the EBH ON, the brake pedal will have this stiff resistance at very low pedal engagement which didn't seem right at all.

Has anyone ever had this problem? If so how did you fix it?

 

[Fired00d]

Experienced something today while driving in heavy traffic that made me think about this post. My experience wasn't related to the EBH but while driving closely behind another vehicle I noticed when I took my foot off accelerator I could feel like what I thought was the car braking and thought it might be either the Collision Mitigation Braking System (CMBS) or Adaptive Cruise Control (ACC). I wasn't using the cruise control at that particular moment but it was turned on, and when I released the accelerator the "brake" light in the console didn't flash like it does when the CMBS activates but it did feel like the car was slowing down more than it would if there wasn't a vehicle in front of me. When this happened it made me wonder if even though I was accelerating was the car trying to slow (brake) before I released the accelerator. If this was the case then I can see if someone drove in high traffic a lot and this would happen then it could be the cause of accelerated brake pad wear.

 

[Samuelx]

I don't use the brake hold feature but have had the CMBS activate numerous times when I didn't want it to, when it wasn't necessary, and when I wasn't prepared for it - I'm not a fan. Just earlier today, it did it to me again when I was speeding up and changing lanes to pass a car in front of me. Apparently, CMBS thought I was going to crash and hit the brakes while I was still accelerating diagonally past the car in front - I'm sure that caused extra/unnecessary brake wear. Btw, it happened so fast that I'm not sure if my car cut the acceleration while applying the brakes or continued to allow me to give it gas and applied the brakes over/on top...

 

[Fired00d]

I was speeding up and changing lanes to pass a car in front of me. Apparently, CMBS thought I was going to crash and hit the brakes while I was still accelerating diagonally past the car in front

I have had this happen also. As useful as this feature is/can be, it still needs some refining. 😕

 

[SliceAndSpice]

I don't use the brake hold feature but have had the CMBS activate numerous times when I didn't want it to, when it wasn't necessary, and when I wasn't prepared for it - I'm not a fan. Just earlier today, it did it to me again when I was speeding up and changing lanes to pass a car in front of me. Apparently, CMBS thought I was going to crash and hit the brakes while I was still accelerating diagonally past the car in front - I'm sure that caused extra/unnecessary brake wear. Btw, it happened so fast that I'm not sure if my car cut the acceleration while applying the brakes or continued to allow me to give it gas and applied the brakes over/on top...

Wow that sounds crazy! Is there an option to turn off the CMBS? This has not happened to me yet, but pretty soon I will be changing the rotors and pads by myself.

 

[Fired00d]

Wow that sounds crazy! Is there an option to turn off the CMBS? This has not happened to me yet, but pretty soon I will be changing the rotors and pads by myself.

Yes, there is a way to turn CMBS off (see attachment below)... however it will be turned back on the next time you restart your car.

 

[SliceAndSpice]

Yes, there is a way to turn CMBS off (see attachment below)... however it will be turned back on the next time you restart your car.

Wow, thanks! I wish it can stay off, they need to change that. Maybe it abides by safety rules to switch it back on when you restart the vehicle.

 

[Fired00d]

Wow, thanks! I wish it can stay off, they need to change that. Maybe it abides by safety rules to switch it back on when you restart the vehicle.

You're welcome. It would be nice if this along with some other features could be permanently disabled. I did notice something interesting in the (CMBS) attachment I posted...

"When the CMBS is activated, it will continue to operate even if the accelerator pedal is partially depressed. However, it will be canceled if the accelerator pedal is deeply depressed."

I found the following statements (page 521) regarding the ACC system...

"You can temporarily increase the vehicle speed. In this case, there is no audible or visual alert even if a vehicle is in the ACC with LSF range. ACC with LSF stays on unless you cancel it. Once you release the accelerator pedal, the system resumes an appropriate speed for keeping the following interval while a vehicle ahead is within the ACC with LSF range."

"While the accelerator pedal is depressed, the system does not apply the brakes to keep the following interval, as well as the BRAKE message on the driver information interface display does not appear."

After seeing/reading the above (ACC) statements I'm inclined to believe in the situation I described I may have had the ACC engaged and that is the reason the car was slowing down (braking) when I released the accelerator since I never saw "BRAKE" displayed. If that was indeed the case it's nice to know (if system works as described) that brakes weren't being applied while accelerating.

 

[Samuelx]

POS CMBS braked on me again yesterday! I was accelerating to perform a lane change to my left with a large truck ahead and a slow moving car on my left - with PLENTY of room - and the system "freaked out" and braked about halfway into the lane change, while I was still pressing down on the gas pedal. I'm guessing that a combination of higher speed (80mph ish) and the large size of the truck in front combined to cause the system to "panic". The other drivers were probably like WTF is wrong with that guy (me) because that's how I felt too! With regards to the above quoted passage from the manual - I have to wonder just how deep "deeply depressed" is because I was probably at least half throttle at the time... SMH...

 

[Fired00d]

@Samuelx I wonder if the upgrades listed in the article - 2021 Honda Accord Debuts With Restyled Face And Lots Of New Tech will be available w/a software update?...

"For improved safety, the adaptive cruise control has smoother braking, and the lane-keeping assist system has more natural feeling steering corrections. All grades of the 2021 Accord have a rear seat reminder and rear seatbelt reminder to help prevent drivers from leaving a child or pet in the vehicle. The range-topping Touring grade gets new low-speed braking control that uses sonar to automatically stop the vehicle to avoid a collision in conditions like being in a parking lot."

The improved (smoother) braking may help with what we are experiencing. To me it's a safety issue and should be available w/a software update.