Brake Temerature

whitenemesis

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How and where does the CLS measure brake temperature?
 

television

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Why would the car want to do or know that as there are no sensors on the calipers for measuring any temp.
 
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whitenemesis

whitenemesis

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Why Malcolm? Because of this message in the cluster...

"Brake overheated Drive on, but with even greater care"

Thanks for the input :rolleyes:
 

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Why Malcolm? Because of this message in the cluster...

"Brake overheated Drive on, but with even greater care"

Thanks for the input :rolleyes:

I have never seen it, and I do not recall anyone else ever having the message up, so at least the car has told you how to drive.

Just shows what happens when a powerful car gets in the wrong hands. :shock:
 
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whitenemesis

whitenemesis

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I have never seen it, and I do not recall anyone else ever having the message up, so at least the car has told you how to drive.

Just shows what happens when a powerful car gets in the wrong hands. :shock:

Jumping to the wrong conclusion again Malcolm ....
 
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npuk

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Should have got EBC red stuff pads Peter, then you wouldnt have to hold down the brake pedal as long and the brakes wouldnt over heat. Or maybe all that brake dust is affecting the brake cooling. ;)
 

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Jumping to the wrong conclusion again Malcolm ....

Not at all,, it just so happens that I never got the message up, and I cannot recall anyone else ever asking about it.

Nothing in the hand book either.

At least the car is telling you how to handle the problem, so slow down, way up the situation ahead.:D
 
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whitenemesis

whitenemesis

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Page 376

If you don't know, perhaps best not comment ...
 
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whitenemesis

whitenemesis

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Should have got EBC red stuff pads Peter, then you wouldnt have to hold down the brake pedal as long and the brakes wouldnt over heat. Or maybe all that brake dust is affecting the brake cooling. ;)

Now, now Nikhil, behave! ;) :D
 

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Cut and pasted from a US forum...

"Let me clear some items up about this break over-temp warning. It is first of all NOT something that stores an error code so your insurance company wont be beating your door down about this -- like those people know about the computers in an MB anyhow.

Second of all there is no temp sensor in the vehicle at all regarding the brake temps. The car has an algorithm that it uses to determine when the car COULD be getting near the point of brake fade. It is not a simple number of brake applications but instead it measures the force of the application, the speed at which you are traveling, the delta value in speeds etc and then when the car thinks you have asked too much of the brakes, the light comes on and says hey watch out bone head! I have seen an E320's breaks burst into flames before the brake overtemp light came on so clearly there is no sensor reading pad, rotor or fluid temps. This info came from the head instruction for MB tech training.

Finally you will never feel brake fade on these cars until the pad has gone right past its operating range and is indeed cooked and done -- no more stopping friction. The SBC system compensates for fade by applying more brake force as the system registers a less effective brake pad. As the car sees brake applications not slowing the vehicle accordingly, it increases the force of the applications to compensate. This makes the system work harder and it feels as if the brakes are indeed free from fade. In reality the SBC system is simply giving you a false feeling of security and will eventually reach a point of total failure if you don’t allow the brakes to cool down. This feature seems like a hazard not a safety feature but I think MB figures most owners will never keep pressing hard once the algorithm triggers the light saying hew brakes are getting to hot mr. driver man."
 

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Why bother. Maybe we should start monitoring the wiper blade or door lock temperature?
 

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Should have got EBC red stuff pads Peter, then you wouldnt have to hold down the brake pedal as long and the brakes wouldnt over heat. Or maybe all that brake dust is affecting the brake cooling. ;)

That is true, its fact :D:D
 

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Posts don't get deleted if they stay on topic, and are not personal.
 

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I almost answered the same with regards to Red stuff having a higher temp rating but I thought the demon Post delete would strike again !!

It did Simon when I said the same thing earlier :D just plain facts that if the ceramic pads can stop you in a shorter distance, the less chance of over heating the system.

With SBC there is 160 bar at each front wheel, I have no idea what the pressure is on a standard vacuum aided system. Interesting that expansion of the fluid is allowed for.
 

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