ABS sensor installation

KATHY CLARY-YANCEY

MEMBER
2008 MERCEDES BENZ GL450
4.7L
V8
4WD
AUTOMATIC
170,000 MILES

I have replaces 3 speed sensors when I got to the front passenger side the connector plug as 2 wires one is speed sensor the other is brake pad wear sensor. Problem is, I can’t find the wire harness that has both wires connected to the same plug. Am I missing something?

5 Replies

JACOBANDNICKOLAS

MECHANIC
109,758 POSTS

Hi,

There isn't one plug for each. To the best of my knowledge, they are separate and the speed sensor connects at a small black box usually behind the strut assembly. I looked up the sensor wiring, and it shows it going to the control module.

Is that what you're asking?

Joe

Image (Click to make bigger)

SPONSORED LINKS

Was this

answer

helpful?

Yes

No

Monday, July 20th, 2020 AT 1:05 PM

KATHY CLARY-YANCEY

MEMBER
3 POSTS

I took a photo, one wire coming out of the black plug is the speed sensor wire the other is the brake pad wear wire, but I can’t find anything on the internet that looks like this.

Image (Click to make bigger)

Was this

answer

helpful?

Yes

No

Monday, July 20th, 2020 AT 1:18 PM

JACOBANDNICKOLAS

MECHANIC
109,758 POSTS

What is on the opposite side of that plug? Is it the sensor?

Joe

Was this

answer

helpful?

Yes

No

Monday, July 20th, 2020 AT 3:42 PM

KATHY CLARY-YANCEY

MEMBER
3 POSTS

One wire end hooks to the speed sensor the other wire end hooks to the brake ad wear sensor.

Was this

answer

helpful?

Yes

No

Tuesday, July 21st, 2020 AT 12:22 PM

JACOBANDNICKOLAS

MECHANIC
109,758 POSTS

When you disconnected the original one, was it attached to the control arm assembly? Normally, they are attached and connected there. See the two pics I attached.

Joe

Images (Click to make bigger)