2005 E55 Brake Feel
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E63 AMG 2009 E55 AMG 2005 E63 AMG Wagon 2007
2005 E55 Brake Feel
So randomly every other time I drive the car, when I press the brakes it will be hard. But I let go and press again, and it’s the normal brake pedal feeling. Initial brake feel is like when you pump your brakes parked, hard but still brakes the car. But when I let go of the brake pedal and try again, it’s normal again. No error on the dash or anything. What’s the deal?
#2
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“Brake feel” in your 211 E-55 is a mis-nomer. When you apply brakes in your E-55 you are making a request to stop; sent to Oz which dials up a given amount of pump generated braking pressure; applied to the calipers. Press harder, get more pressure applied. Get to point of locking a wheel or sliding around and SBC performs ABS and ESP magic to help keep you from throwing the car away. The car does not have a brake master cylinder as other cars are equipped with. 212 and newer cars got a brake master; MB having learned that SBC; while effective is not all that... or current cars would be so equipped.
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2005 CLS55 AMG W219 C219
The pressure you feel is simulated by the Brake Operating Unit. The pressure to your brake pads is all modulated/regulated by the SBC unit. See attachment for extensive information.
Last edited by nd-photo.nl; 11-23-2023 at 01:22 PM.
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E63 AMG 2009 E55 AMG 2005 E63 AMG Wagon 2007
“Brake feel” in your 211 E-55 is a mis-nomer. When you apply brakes in your E-55 you are making a request to stop; sent to Oz which dials up a given amount of pump generated braking pressure; applied to the calipers. Press harder, get more pressure applied. Get to point of locking a wheel or sliding around and SBC performs ABS and ESP magic to help keep you from throwing the car away. The car does not have a brake master cylinder as other cars are equipped with. 212 and newer cars got a brake master; MB having learned that SBC; while effective is not all that... or current cars would be so equipped.
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One thing I have come to realize from racing and street driving is the newer the pads,meaning thickness,the better the response and and brake feel. The lower the pads get and the more the pistons have to be extended out the worse the feel.
Last edited by SICAMG; 11-24-2023 at 02:10 PM.
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2005 CLS55 AMG W219 C219
Also, has your brake fluid also been serviced? It takes DOT 4 Plus, not the normal DOT 4.
If the SBC is on its way out, you will receive error messages first > https://mbworld.org/forums/c219/8443...ml#post8651162
If the SBC is on its way out, you will receive error messages first > https://mbworld.org/forums/c219/8443...ml#post8651162
#7
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Pro-tip: When you get the red BRAKE warning advising you to not drive the car.... They mean it!
The ‘Back up brake master’ built into the system is not there to drive to the repair shop.
Tow it.
The ‘Back up brake master’ built into the system is not there to drive to the repair shop.
Tow it.
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E63 AMG 2009 E55 AMG 2005 E63 AMG Wagon 2007
Also, has your brake fluid also been serviced? It takes DOT 4 Plus, not the normal DOT 4.
If the SBC is on its way out, you will receive error messages first > https://mbworld.org/forums/c219/8443...ml#post8651162
If the SBC is on its way out, you will receive error messages first > https://mbworld.org/forums/c219/8443...ml#post8651162
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nd-photo.nl (11-27-2023)
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looking for a W211 E55/E63
I’ve had this issue on and off with my 05 E55 also, ~136k miles.
Sometimes the pedal feel is “normal” and other times it’s extremely stiff. I am not totally sure but around town with repeated pedal activity it feels like the “stiff pedal” happens more often. If I’m driving freeway/highway it seems to happen less.
Sometimes the pedal feel is “normal” and other times it’s extremely stiff. I am not totally sure but around town with repeated pedal activity it feels like the “stiff pedal” happens more often. If I’m driving freeway/highway it seems to happen less.
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E63 AMG 2009 E55 AMG 2005 E63 AMG Wagon 2007
I’ve had this issue on and off with my 05 E55 also, ~136k miles.
Sometimes the pedal feel is “normal” and other times it’s extremely stiff. I am not totally sure but around town with repeated pedal activity it feels like the “stiff pedal” happens more often. If I’m driving freeway/highway it seems to happen less.
Sometimes the pedal feel is “normal” and other times it’s extremely stiff. I am not totally sure but around town with repeated pedal activity it feels like the “stiff pedal” happens more often. If I’m driving freeway/highway it seems to happen less.
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nd-photo.nl (06-26-2024)