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Wheel Speed Sensor replacement (SLK R170)

478 views 4 replies 3 participants last post by  tsberkey  
#1 ·
1) remove wheel
Vehicle brake Automotive Wheel System Tread Silver Synthetic rubber


2) locate sensor wire (the one closer to you)
Silver Synthetic rubber Electrical cable Vehicle brake Wire


3) remove two torx bolts to remove plastic cover
Iron Silver Carbon fibers

Vehicle brake Synthetic rubber


4) Lift speed sensor out
Wire Household hardware Fastener

Household hardware Fastener


5) Unplug dual speed sensor/brake pad sensor plug (push retainer clip down in top center to expose end of the clip, then pry up end of the clip with a small flathead)
Synthetic rubber Tread Nut Mechanic Auto mechanic


6) uncouple the two plugs (I forgot to get a picture of this, but the tabs connecting the two were pretty easy to gently push back with a flat head)
Automotive Fuel System Nut Wire


7) Install the new speed sensor
Carbon fibers Synthetic rubber
 

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#3 ·
Good Job!

As it looks yours had a head to head with the spinning parts/dirt/rust underneath, so it would be good to “check” if there is a good gap and/or cleaning is needed before having to do it again because of whatever caused this:

Also it is good shot, showing the “square” form that is the FaceLift speed sensor, not the “cylindrical” that is 1996-2000 one!
 
#4 ·
Thank you for this post and the fabulous pictures. Everything, and I mean EVERYTHING, I saw previous kept showing a 10mm bolt that had to be removed. I looked for a half-hour and finally gave up to come inside and do a new search. Then, I found your post. Yep, the two monster torx bolts instead. New part ordered, hopefully on the road in a couple of days.
 
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