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#1
06-13-2006, 10:24 AM
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brake problems
Hi, I have a 86 MB 420SEL. Just changed the brakes yesterday with aftermarket pads and rotors, but here is my problem.
I did not know that there were brake pad sensors on this car, so I did not change them. Now the abs light on the dash stays on all the time!! How do I fix this? I don't have a service manual, and cannot find one. Any help is appriciated kris 
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#2
06-13-2006, 10:26 AM
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Replace them, tape them up, or cut them off. Your choice.
__________________
1989 300E 144K
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#3
06-13-2006, 10:38 AM
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Quote:
__________________
08 W251 R350 97 W210 E320 91 W124 300E 86 W126 560SEL 85 W126 380SE Silver 85 W126 380SE Cranberry 79 W123 250 78 W123 280E 75 W114 280
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#4
06-13-2006, 10:42 AM
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yes its the abs light, comes on sometimes and sometimes it does not.
kris
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#5
06-13-2006, 02:16 PM
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It's probably an ABS system sensor, not a pad wear sensor issue. The ABS sensors interface with slots on the inside of the front rotors, and replacing the rotors may have disturbed them. Check also to see that the wires are properly routed and clipped in at the right places, and the insulation isn't cut or damaged.
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#6
06-14-2006, 03:05 AM
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When u replaced the pads u might hit the ABS sensor cable. First locate them and try to clean them and make sure they are connected properly, otherwise install two new ABS sensors. I recommend u to change them even if they r working fine. After arround 10 years they must be replaced in order to function properly.
__________________
Master Computer Engineer, A+, Network+, MCP/MCSA/MCSE 4/2k/2k3 - Messaging, MCTS, MCITP, MCT, Brainbench, ICDL and starting Ph.D 380SE 1984 <------- Totaled by flipping accident 300SE 1988 <------- Sold Volvo S70 2000 <---- 4 family Opel Omega 2002 <-- 4 family 560SEC 1989 <------ Sold 560SEL 1990 <------ Sold 560SEL 1991 <------ 4 my mother 560SEL 1989 <------ Sold 600SEL 1992 <------ Current
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#7
06-14-2006, 04:30 AM
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Typically, the abs sensor gets small metalic particles in the slotted probe. Where do these small metalic particles come from? The Semi metalic brake pads. Cleaning them involves removing the caliper and pads and the hub and rotor. There is a 'tone' wheel on the hub that also gets metalic particles in between the slots.
Here's a link to the W126 service manual. http://mb.braingears.com/126_DISC2/program/matrix.htm http://mb.braingears.com/126_DISC2/program/chassis_420SEL.htm
__________________
Regards Warren Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL ENTER > = (HP RPN) Not part of the in-crowd since 1952.
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