Brake wear indicator still on after changing rotors and pads? - Mercedes Benz SLK Forum

SLK R170 General Discussion SLK 200, SLK 230K, SLK 320, SLK32 AMG

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#1 Old 09-16-2012
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Brake wear indicator still on after changing rotors and pads?

Hey all,

I just changed my front rotors and pads as well as the brake pad wear sensors. The brake pad wear indicator lamp was on on the dash and I expected it to go out after replacing everything.

After I started the car the wear indicator lamp is still on. Is there anything I need to do to reset it?

I tried turning the steering wheel all the way left, all the way right and then back to center while the car was running, but no change. I also disconnected the negative battery terminal for a few minutes and nothing...

Any ideas?

Thanks for your help!
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#2 Old 09-16-2012
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I have a couple new ebc sensors if needed, Try disconnecting the battery!
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#3 Old 09-16-2012
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There's nothing to reset on them, it could be a bad sensor, dirty contact or a bad connection. Unplug it and try again.
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#4 Old 09-16-2012
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There is a similar thread on here today. The cause was the sensor wire being trapped I think Run a search
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#5 Old 09-16-2012
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#6 Old 09-17-2012
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I assume you changed the sensors and installed new ones. I haven't had to do my rear brakes yet on the SLK, but is there a wear sensor back there too? One of my other cars has three sensors, two in front and one in the rear.

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#7 Old 09-18-2012
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You should also change the sensor and clear the error if necessary.
The sensor on mine is situated on the front right wheel.

I have heard that they put the sensor on the wheel which is close to the hard shoulder (kerb) as this pad wears faster but I don't have proof for that.
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#8 Old 09-18-2012
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Quote:
Originally Posted by SamuraiSpirit View Post
You should also change the sensor and clear the error if necessary.
The sensor on mine is situated on the front right wheel.

I have heard that they put the sensor on the wheel which is close to the hard shoulder (kerb) - left for the UK but I don't have proof for that.
Mine are on the drivers side wheels UK right side. Another poor cost cutting effort by MB they should be on all four wheels. When my pads were changed after the light came on the left ( nearside) were almost on the metal because there is no warning sensor. I have said it before. The best sensors were on my old Camaro where a bit of spring steel was built into the pads. As soon as that started touching the disc you couldnt ignore it. Cheap and very effective as the sound was a bit like your fingernails down a blackboard
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#9 Old 09-18-2012
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Quote:
Originally Posted by JonB View Post
Mine are on the drivers side wheels UK right side. Another poor cost cutting effort by MB they should be on all four wheels. When my pads were changed after the light came on the left ( nearside) were almost on the metal because there is no warning sensor. I have said it before. The best sensors were on my old Camaro where a bit of spring steel was built into the pads. As soon as that started touching the disc you couldnt ignore it. Cheap and very effective as the sound was a bit like your fingernails down a blackboard
A couple of months ago I replaced my rear pads as I started hearing a whistle from the rear left wheel. I thought that such spring steel was the reason for the whistle but it occurred that the pads were just old and worn.
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#10 Old 09-18-2012
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love my SLK ( if its possible to love an inanimate object) but there are things about it I find a bit "cheap" considering the class of vehicle
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#11 Old 09-18-2012
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love my SLK ( if its possible to love an inanimate object) but there are things about it I find a bit "cheap" considering the class of vehicle
My current pain is the rear window pillars. I have decided to cover them with carbon fibre but I am thinking to wait until the end of the winter season after they completely peel from the cold and snow.
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My current pain is the rear window pillars. I have decided to cover them with carbon fibre but I am thinking to wait until the end of the winter season after they completely peel from the cold and snow.
Mine are fine touch wood ( taps head) but if the did start to peel I would use "Carbon Fibre " sheet to cover them with without removing them from the car. I covered my laptop front where your hands rest with it as I had worn through the silver surface. Even if you had to replace every year or so its still got to be a cheaper and easier option than buying new panels
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#13 Old 09-18-2012
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You made me check the EPC. Looks like my 170 chassis has two brake wear indicators, front left and front right. None on the back, but the rear brakes ought to last to 100,000 miles or more in most cases. Several comments above point out the need for every A and B service to be done whether it's a DIY job or taken into a service facility. Every B service has on it a requirement to both the pads and the rotors. As I have often said, Mercedes automobiles are not appreciative of deferred maintenance.

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#14 Old 10-13-2016
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Quote:
Originally Posted by sokoloff View Post
You made me check the EPC. Looks like my 170 chassis has two brake wear indicators, front left and front right. None on the back, but the rear brakes ought to last to 100,000 miles or more in most cases. Several comments above point out the need for every A and B service to be done whether it's a DIY job or taken into a service facility. Every B service has on it a requirement to both the pads and the rotors. As I have often said, Mercedes automobiles are not appreciative of deferred maintenance.
Rear brake pads should last 100.000 miles or more ???

Are you sure .
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