2004 E320: Brake Warning Still on .....
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2004 E320
2004 E320: Brake Warning Still on .....
Hi,
I replaced all 8 pads yesterday. All 3 sides have sensors.
1) I did not disable SBC --- can someone tell me how?
2) The brake pad wear light is still on. WHY? How do I reset it?
thnx
I replaced all 8 pads yesterday. All 3 sides have sensors.
1) I did not disable SBC --- can someone tell me how?
2) The brake pad wear light is still on. WHY? How do I reset it?
thnx
Thread Starter
Newbie
Joined: Jan 2008
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2004 E320
2004 E320: How do I know if I have SBC??
hi,
How to tell if my car has SBC? I replaced all 8 pads yesertday ....upon driving, the same brake pad wear light came but nothing in red and no other warnings .... so do I have SBC?
thnx
seadweller
How to tell if my car has SBC? I replaced all 8 pads yesertday ....upon driving, the same brake pad wear light came but nothing in red and no other warnings .... so do I have SBC?
thnx
seadweller
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From: Europe
223.168 & 213.012 & 906.633 & 214.005
If you did not lose any fingers, I would guess the car does not have SBC 
Seriously, all W211 until the face lift have SBC brakes. There are photos shown in this forum from the SBC pump, you could identify it from your car.
Seriously, all W211 until the face lift have SBC brakes. There are photos shown in this forum from the SBC pump, you could identify it from your car.
MBWorld Fanatic!
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From: Maryland
Eurocharged 2004 E500, Eurocharged ECU/TCU 2005 SL600, 2010 Caddy SwaggerWagon
Yep, you have SBC, like it or not. Did you replace the brake wear sensors when you changed the pads? These normally break when you change the pads. New sensors are only a couple of bucks a pop. 2 for the front, and 1 for the rear if I remember correctly.
Super Member
Joined: Mar 2006
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From: Bellevue, WA
.... nothing to brag about, it is a previous model....
Open the hood, look at your ABS controller, (passenger side, spider-looking-thingy) if there is black module attach to it which label "SBC".
(usually 03~05 has SBC)
It might be interesting to know how did you change all your pads w/out disable SBC first. If you did change pads w/out disable SBC first, it will trigger the error code that require to STAR it.
Anyway, check your pad sensor, sensor wires.
And do couple restart sequence. ( turn your key to power position, step on your brake for 15~30 seoncds. Remove the key, and open your driver door. ( SBC will pressure, when you are getting in and out of your car w/ door open. )
thnx
seadweller[/QUOTE]
(usually 03~05 has SBC)
I replaced all 8 pads yesertday ....upon driving, the same brake pad wear light came but nothing in red and no other warnings
Anyway, check your pad sensor, sensor wires.
And do couple restart sequence. ( turn your key to power position, step on your brake for 15~30 seoncds. Remove the key, and open your driver door. ( SBC will pressure, when you are getting in and out of your car w/ door open. )
thnx
seadweller[/QUOTE]
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From: Ft. Lauderdale Area, USA
2015 ML 350
Also, when you get into the car 1st thing in the morining, put your key in & step on the brake you will hear a whirring motor (pump) for a few seconds. 2007 > cars don't have SBC or make that noise.
There are several other things the car monitors that tell the car you are about to use it which will trigger the SBC pump.
There are several other things the car monitors that tell the car you are about to use it which will trigger the SBC pump.
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From: Louisiana
03 E500 and Corvette
Mine did not reset until I did the full service/oil change/filter, followed the owners manual for oil change then the + went away.
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MBWorld Fanatic!
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From: Maryland
Eurocharged 2004 E500, Eurocharged ECU/TCU 2005 SL600, 2010 Caddy SwaggerWagon
Didn't you start a thread about this a couple of hours ago?
https://mbworld.org/forums/showthread.php?t=226358
https://mbworld.org/forums/showthread.php?t=226358
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Out Of Control!!
Joined: Jul 2003
Posts: 15,901
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From: North Scottsdale, AZ
'71 Pinto
- Brake wear sensor connector not completely plugged in
- Corrosion in the connector of the brake wear sensor
- Corrosion in the connector of the driver’s side SAM
- Open circuit or ground discontinuity between SAM and brake lining wear sensor
Revisit your work.
FYI:
As of MY06, the left front 50% brake wear sensor was eliminated from production.
If you are still under warranty, mention DTB P-B-42.10/90 and they will determine which sensor triggered the display message. Furthermore, they should check each sensor’s wiring harness over the complete run from the respective wheel up to the driver’s side SAM for kinks / crushed sections / chafing marks. Even slight damage can lead to a fault that occurs sporadically.
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From: Louisiana
03 E500 and Corvette
Thread Starter
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2004 E320
Brake Pad Warning Not going Away: 2004 E320
ok folks,
I replaced all my 4 disc brake pads. I did not disconnect the SBC because I did not know I was supposed to.
After putting on new pads, The "Brake Pad Wear" indicator light is still on. So I thought it probably has to do with sensors. I made sure all the sensors were in as much as possible and plugs were fit in well and not loose. That did not work, the light is still on.
So since the sensors are closed loop sensors, I cut the wires and tied the wires together. In other words, I stripped and joined the sensor plug wires together, for each side and taped it with electrical tape and tucked it into the calipers.
Still I am getting that BRAKE PAD WEAR warning ....
How do I get rid of this warning? what might be wrong???
thanks,
I replaced all my 4 disc brake pads. I did not disconnect the SBC because I did not know I was supposed to.
After putting on new pads, The "Brake Pad Wear" indicator light is still on. So I thought it probably has to do with sensors. I made sure all the sensors were in as much as possible and plugs were fit in well and not loose. That did not work, the light is still on.
So since the sensors are closed loop sensors, I cut the wires and tied the wires together. In other words, I stripped and joined the sensor plug wires together, for each side and taped it with electrical tape and tucked it into the calipers.
Still I am getting that BRAKE PAD WEAR warning ....
How do I get rid of this warning? what might be wrong???
thanks,
Thread Starter
Newbie
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2004 E320
No Brake Pad Sensors = No Warnings?
Is this true? No Brake Pad Sensors = No Warnings?
I am a very mecniacially inclined person and am always checking for pad wear and other stuff on my cars .... these brake pad sensors are a pain in the A$$ to deal with. If I take them all off, will I still get the BRAKE PAD WEAR warning or not? If I won't get the warning, then I rather take them off since I am on top of my record keeping and checking so I don't need no stinkin computer to tell me when to change my pads ....
thnx
I am a very mecniacially inclined person and am always checking for pad wear and other stuff on my cars .... these brake pad sensors are a pain in the A$$ to deal with. If I take them all off, will I still get the BRAKE PAD WEAR warning or not? If I won't get the warning, then I rather take them off since I am on top of my record keeping and checking so I don't need no stinkin computer to tell me when to change my pads ....
thnx
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From: Albuquerque
'10 CL550, '12 GL550
Of course you won't.
It ain't a "stinkin computer" either, it's just an electrical contact when the pad is worn down enough that the sensor contacts the rotor. No "calculation" involved.
Removing/replacing the sensors is the simplest part of a pad change.
It ain't a "stinkin computer" either, it's just an electrical contact when the pad is worn down enough that the sensor contacts the rotor. No "calculation" involved.
Removing/replacing the sensors is the simplest part of a pad change.
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2003 E320
The sensor is a simple loop that is embedded into a hole in the top of the break pad. When the rotor wears the loop, it breaks continuity. That causes an infinite resistance. I BELIEVE that without the sensor , the FSS will permanently paste "return to workshop" in the display. Please note that I am deducing this from what I have observed. There may be a completely different scenario in fact. You may already know that there are at leat two specific sensors (one for each front wheel). I THINK the rear is a copy of one of the two fronts. The rubber plug is color coded.
All based on my 2003 E320
All based on my 2003 E320
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Joined: Mar 2006
Posts: 3,254
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From: Louisiana
03 E500 and Corvette
Lets make some assumptions here.
1) the circuit is properly connected. (I use the MB sensors to do this which as you point out is just a loop of wire inserted into the pad that is cut as the pad wears
2) All the brakes are installed properly.
If you cut the wires on the old sensor and connected them electrically so they have the same resistance as the sensor this would satisfy the logic to the computer.
Now,, even though you did not disconnect the SBC you still might have gotten away without being injured which is the primary reason for disconnecting the SBC. To prevent activation while your hands are on the caliper.
I found that my + went away when I did the reset of the FSS listed in the manual after my oil change. This reset caused the logic to check and confirm the brakes and with new pads sensors the logic is satisfied to remove the +
SO, have you serviced your car and activated the FSS reset as listed in the owners manual. If not and your only issue is the + in the maintenance window and the sensors / pads are correct. Reset at the next oil change should clear the +
1) the circuit is properly connected. (I use the MB sensors to do this which as you point out is just a loop of wire inserted into the pad that is cut as the pad wears
2) All the brakes are installed properly.
If you cut the wires on the old sensor and connected them electrically so they have the same resistance as the sensor this would satisfy the logic to the computer.
Now,, even though you did not disconnect the SBC you still might have gotten away without being injured which is the primary reason for disconnecting the SBC. To prevent activation while your hands are on the caliper.
I found that my + went away when I did the reset of the FSS listed in the manual after my oil change. This reset caused the logic to check and confirm the brakes and with new pads sensors the logic is satisfied to remove the +
SO, have you serviced your car and activated the FSS reset as listed in the owners manual. If not and your only issue is the + in the maintenance window and the sensors / pads are correct. Reset at the next oil change should clear the +
MBWorld Fanatic!
Joined: Mar 2006
Posts: 3,254
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From: Louisiana
03 E500 and Corvette
The sensor is a simple loop that is embedded into a hole in the top of the break pad. When the rotor wears the loop, it breaks continuity. That causes an infinite resistance. I BELIEVE that without the sensor , the FSS will permanently paste "return to workshop" in the display. Please note that I am deducing this from what I have observed. There may be a completely different scenario in fact. You may already know that there are at leat two specific sensors (one for each front wheel). I THINK the rear is a copy of one of the two fronts. The rubber plug is color coded.
All based on my 2003 E320
All based on my 2003 E320
) The electrical circuit is satisfied if you cut the two wires to the sensor leaving the plug intact and then soldering and insulating the connetion. This would satisfy the system that the circuit/loop is correct. Or you could just secure the sensor to the caliper and not insert it.But it sure sounds like a low of work to bypass a safety system. I do my own brakes and it is easy to buy and insert the sensor. The first sensor is the 50% warning anyway.. so why worry. Let the +_ show in the FSS window then when the next brake warning comes on for pads change them and sensors. That way you don't have to pull the wheel and measure the pad thickness. Sounds a lot easier to use the system as designed vs. trying to by pass. But just my opinion of course.
