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Old 02-26-2006, 05:27 AM   #1 (permalink)
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Brake Lining Wear Light

Greetings everyone. Newbie here with a 1999 E320 that had its brake lining wear warning light just pop on. Had my brakes done once already but can't remember for the life of me who serviced them. The question is -

Like the Failed Lamp Warnings, will the brake lining warning indicator reset itself after I've had the brakes serviced? Or is it a particular diagnostic that must be reset by Mercedes Service? Obviosuly I am trying to avoid work with Mercedes Service that can be done by my local mechanic. Thanks in advance for any feedback.

Ed
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Old 02-26-2006, 05:38 AM   #2 (permalink)
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RE: Brake Lining Wear Light

Quote:
The Ledge - 2/26/2006 8:27 AM


Like the Failed Lamp Warnings, will the brake lining warning indicator reset itself after I've had the brakes serviced? Or is it a particular diagnostic that must be reset by Mercedes Service? Obviosuly I am trying to avoid work with Mercedes Service that can be done by my local mechanic. Thanks in advance for any feedback.

Ed
no. just replace the brake pad wear sensor. this is what causing the warning on the cluster.
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Old 02-26-2006, 08:48 AM   #3 (permalink)
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RE: Brake Lining Wear Light

Thank you.
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Old 02-27-2006, 10:38 AM   #4 (permalink)
JG
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RE: Brake Lining Wear Light

Your brake lining warning should reset after every restart. It should only come on again when brakes are applied. You stated you had your brakes done already, how many miles ago? Front and rear? You probably should inspect your brakes and make sure the sensors look ok (seated properly in connector and the pad).
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Old 03-01-2006, 05:12 AM   #5 (permalink)
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RE: Brake Lining Wear Light

There are sensors at every wheel (a wire inside the pad) when the pad wears the wire touches the rotor and the light appears. I would have the pads looked at, some times they do the front or rears only
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Old 01-31-2008, 04:46 PM   #6 (permalink)
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Question Some Intermittant Squealing...

but no sensor light warning. Should I wait until I see the light to replace the pads?
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Old 01-31-2008, 05:04 PM   #7 (permalink)
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Squealing is usually not caused by worn pads. If you get to the metal backing plates, you get a serious grinding noise when you brake.

You could inspect the pads. If they have sufficient material, you could remove them and apply backing paste. Or leave them alone.

I'm not sure that there are sensors on all the pads. I have not checked my rears for sensors.
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Old 01-31-2008, 05:31 PM   #8 (permalink)
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Is it possible to replace the pads without the sensors? I have not serviced the brakes since I bought the car 1Y ago; and I wonder if the previous owner was diligent.
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Old 01-31-2008, 05:42 PM   #9 (permalink)
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Quote:
Originally Posted by Ryanoscerous View Post
Is it possible to replace the pads without the sensors? I have not serviced the brakes since I bought the car 1Y ago; and I wonder if the previous owner was diligent.
It is possible to do so; they're very cheap but some do it that way.

ALSO: Depending on the model and features, you may or may not have a sensor at each wheel. My base W210 has them ONLY on the front wheels.

ALSO: If the wear indicator comes on, INSPECT the brakes or plan for imminent replacement. Ignoring or disconnecting the sensor is just asking for a very expensive brake job. If you just replace the sensor (instead of replacing the sensor AND pads) it will wear through and come right back on.

ALSO: Noises should ALWAYS be investigated. Different pad materials can be noisier than others, but don't ignore a noise, and particularly when it's easy to isolate (such as you step on the brake, then you hear it). Pads can wear at slight angles and it's possible to initially get a light scraping sort of sound before you completely ruin the rotors. In any event, don't ignore noises until you have them investigated and know they are safe to ignore.

TO OUR OP: If you have reasonable mechanical skills this is not a difficult job at all, there is a DIY in the diy sticky, check it out. OEM parts are very inexpensive online and the real expense of this job is labor at the shops. F&R pads and sensors for about $90; dealer brake job (without rotors) is about $650. It's a little more work if you also have to do rotors, but still doable if you have basic mechanical skills.

Take care and enjoy the ride,
Greg
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Last edited by Check Codes; 01-31-2008 at 05:44 PM.
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Old 02-01-2008, 12:11 AM   #10 (permalink)
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Quote:
Originally Posted by donniebhoy View Post
no. just replace the brake pad wear sensor. this is what causing the warning on the cluster.
Um, maybe this is already obvious but replace the pads to.
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