2019 GLS450 softer brake feel after new pads and rotors
Thread Starter
Newbie
Joined: Sep 2020
Posts: 5
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2015 F150 EBScrew, buying GLS450
2019 GLS450 softer brake feel after new pads and rotors
Changed all pads and rotors on my wife’s 2019 GLS450. Put Powerstop K7445 on. The truck stops fine and well within the normal stopping distance measurements as noted by the Almighty internets (43m/141’). Broke in / seated the pads to the rotors as specified by Powerstop. Everything looks fine as far as seeing wear on all rotor surfaces etc. Had a friend of mine look (long time tech, non-MB) and everything is installed correctly and he said “it feels fine to him”.
My wife, who is the DD, said the pedal has much more travel than it did before. Not a “touchy” as it was with the stock pad and rotor set. After she said that I drove it again. I did not notice it, but I only drive it once in a while and I drive a lumber truck (Tundra) so the brakes feel much more sporty to me.
Am I missing something? Did I miss a step in the process? Is there something that needs to be reset electronically that I missed? I did set the pads to the changing position prior to starting and reset prior to driving. I have done brakes for years and never had an issue. Is it the Powerstops? I am at a bit of a loss.
Note: I do have access to Snapon Diag tools if needed.
Thanks in advance for anyone who has info and takes the time to write back!
My wife, who is the DD, said the pedal has much more travel than it did before. Not a “touchy” as it was with the stock pad and rotor set. After she said that I drove it again. I did not notice it, but I only drive it once in a while and I drive a lumber truck (Tundra) so the brakes feel much more sporty to me.
Am I missing something? Did I miss a step in the process? Is there something that needs to be reset electronically that I missed? I did set the pads to the changing position prior to starting and reset prior to driving. I have done brakes for years and never had an issue. Is it the Powerstops? I am at a bit of a loss.
Note: I do have access to Snapon Diag tools if needed.
Thanks in advance for anyone who has info and takes the time to write back!
Out Of Control!!
Joined: Nov 2018
Posts: 11,455
Likes: 5,353
From: San Francisco Bay Area
2019 C63CS
I have no experience with that kit, but looks like it uses ceramic pads. Ceramic pads don't have the same initial bite as semi metallic pads, and particularly in colder temperatures. So what your wife probably notices is that she has to push the pedal harder to get the same initial braking response as before.
Thread Starter
Newbie
Joined: Sep 2020
Posts: 5
Likes: 0
2015 F150 EBScrew, buying GLS450
I have no experience with that kit, but looks like it uses ceramic pads. Ceramic pads don't have the same initial bite as semi metallic pads, and particularly in colder temperatures. So what your wife probably notices is that she has to push the pedal harder to get the same initial braking response as before.
MBWorld Fanatic!
Joined: Feb 2010
Posts: 5,649
Likes: 484
2012 C63;1971 280SE 3.5(Sold);2023 EQS 450 SUV 4 Matic (Wife's)
Replaced the rear pads and rotors with Power Stop CRK7448 two years and 17000 kilometers ago without any issues. The pads are a carbon fiber ceramic blend. Mind you the fronts are still OEM and that is where most of the work is done.
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