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ML 280 W164 ABS light on

Rob H

New Member
Joined
Jul 10, 2006
Messages
26
Location
Lincoln
Car
ML 280 CDI Sport 2008
My ABS light is now on and Cruise control and Run flat are both showing inoperative. I've done a quick check with my 'cheap' diagnostic tool and the only code I'm getting is U1409 that Google suggests may be 'Implausible Left Front Wheel Speed Signal Received'.
I have checked the physical condition of the wheel speed sensor cable and plug, which all looks very good.
What should the resistance be across the 2 pins?
I have also read that the brake light switch is a common cause.
Do I change the BLS first as it's cheap or go for the Wheel speed sensor and if so are non-OEM sensors a sensible option here.
 

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