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Weird Braking Problem, Dash lit up / error messages and lack of brakes. Advice needed
Tooling down the road like normal, then a very strange occurrence of events.
Have fairly new (def good enough) brake pads, rotors, etc. 1. E-brake light in clock display lit up (red, "brake") 2. In tach, ABS light (orange) lit up 3. In instrument cluster, displayed message "ESP malfunction" 4. That almost immediately changed to large red background message with stop sign, saying "STOP. Reduced braking power. Depress brake pedal firmly." 5. Engine RPMs jumped up to 4000 and stayed constant there - I was not on gas! 6. Heard a loud whirring sound from engine bay, kind of like a pump or tank or something? I'm really not exactly sure. Not the radiator fan though. 7. Had very little brakes, went almost to floor and very spongy feeling. Slowly pulled into turning lane off highway, brakes were terrible. Steady red "STOP - Reduced braking power" message in cluster. Turned off car, cluster then changed to "STOP. Brake Failure! Start Engine" Ignored it, waited 2-3 minutes, restarted - and almost the strangest thing of all, nothing seems to be wrong now. Runs and drives fine..... Any ideas ? Thanks |
Battery, alternator, or voltage regulator likely on the way out...
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Originally Posted by jpohl402
(Post 5461027)
Tooling down the road like normal, then a very strange occurrence of events.
Have fairly new (def good enough) brake pads, rotors, etc. 1. E-brake light in clock display lit up (red, "brake") 2. In tach, ABS light (orange) lit up 3. In instrument cluster, displayed message "ESP malfunction" 4. That almost immediately changed to large red background message with stop sign, saying "STOP. Reduced braking power. Depress brake pedal firmly." 5. Engine RPMs jumped up to 4000 and stayed constant there - I was not on gas! 6. Heard a loud whirring sound from engine bay, kind of like a pump or tank or something? I'm really not exactly sure. Not the radiator fan though. 7. Had very little brakes, went almost to floor and very spongy feeling. Slowly pulled into turning lane off highway, brakes were terrible. Steady red "STOP - Reduced braking power" message in cluster. Turned off car, cluster then changed to "STOP. Brake Failure! Start Engine" Ignored it, waited 2-3 minutes, restarted - and almost the strangest thing of all, nothing seems to be wrong now. Runs and drives fine..... Any ideas ? Thanks |
Steve,
No I did not... I haven't been driving the car much, but when I do, it hasn't done the error message. I never got it looked at yet.... |
Maybe brake sensors are faulty...try that instead of changing everything out.
I forgot to change my sensors on my E and I got this error |
Originally Posted by jpohl402
(Post 5484233)
Steve,
No I did not... I haven't been driving the car much, but when I do, it hasn't done the error message. I never got it looked at yet.... I was at the dealership to get a full check up of my car and asked the foreman that is the hydraulic pump noise means it's near it failure "he goes , the car is 2004 and it's normal for it to make a little noise, if the pump fails , you will get the errors that you just described above ^^ press hard and all " but I am not sure about the rpm problem. |
SBC brake system failure possibly?
The SBC pump is covered by a 10 year warranty on the 03-04s. Another reason to upgrade/shop around for 05-06 https://mbworld.org/forums/e-class-w...nit-aware.html |
Originally Posted by stevevmaloney
(Post 5479442)
Hi Did you ever get a response about this event? I just changed my rotors and pads. Did a spiffy job I thought. But, when I started the car up, I got the exact same message as you but mine isn't going out!
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very similar problem with my sl500 :(
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The starter battery needs to be replaced.. The rear battery is fine. I'll check the battery and let you know if it makes a difference.
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2006 Mercedes e500 4matic - get the reduced braking power message while driving on the road - car loses power and takes longer distance to stop - I pull over, stop and restart and regular braking power works - also get the depress brake fully message - how do you fix this problem?
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Did you ever get an answer here. I got the same warnings you described this morning on my sl65. What was the problem?
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