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#1
11-05-2005, 06:43 PM
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what, no brake sensor rear wheels? WTF!!
I thought for sure that the 350SDl, which retailed for $60K new would have rear brake sensors. Certainly NOT the case I found out the expensive way...
Brakes went out thurs nite, in the middle of a 250 mile drive. Mech shows me the brake pads and rotors shot. Original brake pads, stamped 1991 on back of pad... I say: "no rear sensors?" he says: "no sensors. 'bout $150.00. both sides. I say: "go for it..." WTF???
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71 220D 169K wrecked 83 240D 118K sweet 4 speed 91 350SDL (one of the 60% good engines) 156K 84 300d (loaner to my sister) 189K 79 300SD (partswagen) 86 420SEL partswagen 70 220d (partswagen) 68 280s GASSER!!! under construction now 85 300sd 310K miles winter beater car retired 93 300d 2.5 turbo 168K wife's car 83 280SL euro 5 speed 155K 69 250S newest project 54K 
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#2
11-05-2005, 06:47 PM
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$0.0013 per mile. Pretty cheap if you look at it that way.
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Palangi 2004 C240 Wagon 203.261 Baby Benz 2008 ML320 CDI Highway Cruiser 2006 Toyota Prius, Saving the Planet @ 48 mpg 2000 F-150, Destroying the Planet @ 20 mpg TRUMP .......... WHITEHOUSE HILLARY .........JAILHOUSE BERNIE .......... NUTHOUSE 0BAMA .......... OUTHOUSE
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#3
11-05-2005, 06:51 PM
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The W123s don't have rear sensors either. I guess the idea is that you need to take a look at the rears when you replace the fronts. The rears seem to last about 3 times as long as the fronts, but not forever.
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#5
11-05-2005, 06:52 PM
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umm
Quote:
did you ever learn to inspect things like this? i check all of those things quite often.
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have no worries.....President Obama swears "If you like your gun, you can keep it 
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#6
11-05-2005, 06:54 PM
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When the front sensors go off, I go ahead and replace all four sets of pads. The rear pads are cheaper than the front, so I might as well. Haven't had to change rotors yet, but the next pad change will probably put me in rotor replacement land.
Sensors like those are a mixed blessing, when they work they keep you safe, and when they fail they are just another annoying thing to fix (or worse, they lull you into a false sense of security, and then fail). I treat my brake sensor like my fuel reserve light. I'm glad its there, but I try not to rely on it to much. Quote:
peace, sam
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"That f***in' biodiesel is makin' me hungry." 1982 300TD Astral Silver w/ 250k (BIO BNZ) 2001 Aprilia SR50 Corsa Red w/ 5.5k (>100 MPG) Last edited by phidauex; 11-05-2005 at 07:06 PM.
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#7
11-05-2005, 07:56 PM
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actually, Pennsylvania requires a yearly mechanical safety inspection. My mechanic who also does my inspections, reviewed his records and checked the rears at 40% in June, 2005; 55% in June 2004; 60% n 2003 and 2002.
Go figure.
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71 220D 169K wrecked 83 240D 118K sweet 4 speed 91 350SDL (one of the 60% good engines) 156K 84 300d (loaner to my sister) 189K 79 300SD (partswagen) 86 420SEL partswagen 70 220d (partswagen) 68 280s GASSER!!! under construction now 85 300sd 310K miles winter beater car retired 93 300d 2.5 turbo 168K wife's car 83 280SL euro 5 speed 155K 69 250S newest project 54K
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#8
11-05-2005, 07:57 PM
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A lot of Mercedes don't have rear wear sensors.
In the maintenance booklet in my car, it says to visually check the condition of the disks and pads every 15k miles. It should be done regularly, or at least once in the life of the car.
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Ali Al-Chalabi 2001 CLK55 1999 Dodge Ram 2500 Cummins Diesel 2002 Harley-Davidson Fatboy Merlin Extralight w/ Campy Record
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#9
11-05-2005, 08:14 PM
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Quote:
__________________
Palangi 2004 C240 Wagon 203.261 Baby Benz 2008 ML320 CDI Highway Cruiser 2006 Toyota Prius, Saving the Planet @ 48 mpg 2000 F-150, Destroying the Planet @ 20 mpg TRUMP .......... WHITEHOUSE HILLARY .........JAILHOUSE BERNIE .......... NUTHOUSE 0BAMA .......... OUTHOUSE
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#10
11-05-2005, 08:20 PM
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Sounds like the mechanic screwed up or you have a sticky caliper. Rear pads should be inspected every time you rotate your tires along with the rest of the suspension. They have a life span of over 100k miles so their is no reason they should be neglected like that.
__________________
1999 SL500 1969 280SE 2023 Ram 1500 2007 Tiara 3200
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#12
11-06-2005, 08:22 AM
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As we all know rear brakes last MUCH longer than fronts. During the life of rear brakes the rear wheels will have to be removed at one point or another, hopefully often, due to tire rotation. You do rotate your tires don't you?
Upon removal of a wheel, it takes probably no more than about 3 extra seconds to simply look at the pads to see how thick they are. You don't have to go to the toolbox for any measuring instruments. Just look at them. If they are thin or getting thin, get some pads and stick them in there. With the wheels off on most MB's you can stick in a new set of pads in five or ten minutes per wheel or less. Pads are cheap, rotors are not and your life is PRICELESS. When I was 13 I drug home a 48 Chevy that I bought for $12.50. About $75 and a year later it was on the road. My Dad absolutely would NOT let me drive it until the brakes, steering and exhaust were all in condition to his satisfaction. He didn't care if the engine wouldn't get me to the end of the block, but he managed to stress and teach about auto mechanical safety with all that. Don't take your brakes for granted. Get in the ABSOLUTE HABIT of ALWAYS looking at pad thickness ANY TIME a wheel is off for any reason. Also get in the habit of looking for fluid leaks and glancing at the reservoir to see that it is full and clean. Also pay attention any time the brakes don't feel right. Good luck,
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